Merge pull request 'Integrate the shared document renderer and two-trees project work' (#209) from feature/unified-document-renderer-task10 into main

Why: the previous commit archived the card without its closure line.
Evidence: card text only.
Impact: none outside .task.
Refs: PR #209
Co-authored-by: Cursor <cursoragent@cursor.com>

.gitea/workflows/governance.yml

@@ -0,0 +1,150 @@
+name: governance
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  governance:
+    runs-on: ubuntu-latest
+    env:
+      GOPROXY: https://goproxy.cn,direct
+    steps:
+      - name: Checkout
+        env:
+          TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SUBMODULE_TOKEN: ${{ secrets.SUBMODULE_TOKEN }}
+        run: |
+          set -euo pipefail
+          # 只物化两个治理 gitlink（Guidelines 与 deps/development-manager），非递归；
+          # 其它 gitlink 不物化、不取回。凭据只以 URL 限定的 extraheader 存在于本进程树内。
+          python3 - <<'PY_CHECKOUT'
+          import os
+          from pathlib import Path
+          import re
+          import subprocess
+          import sys
+          from urllib.parse import urlsplit
+
+          # 服务端基址取运行器注入的 GITHUB_SERVER_URL（平台控制、候选 PR 不可影响）。
+          SERVER = os.environ.get("GITHUB_SERVER_URL", "").rstrip("/")
+          parsed_server = urlsplit(SERVER)
+          if parsed_server.scheme not in {"http", "https"} or not parsed_server.netloc:
+              sys.exit("Checkout server must be the platform-injected http(s) URL")
+          SSH = "ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/"
+          # 审查过的白名单，独立于候选 .gitmodules：仅列出两个治理 gitlink。
+          REPOSITORIES = {
+              "deps/development-guidelines": "Development-Guidelines",
+              "deps/development-manager": "Development-Manager",
+          }
+          TARGET = "weichen/Agent-System-Backend"
+          root_token = os.environ.pop("TOKEN", "")
+          component_token = os.environ.pop("SUBMODULE_TOKEN", "")
+          if not root_token or not component_token:
+              sys.exit("Checkout requires TOKEN and SUBMODULE_TOKEN")
+          if os.environ.get("GITHUB_REPOSITORY") != TARGET:
+              sys.exit("Checkout repository is outside the reviewed allowlist")
+          sha = os.environ.get("GITHUB_SHA", "")
+          if not re.fullmatch(r"[0-9a-fA-F]{40}", sha):
+              sys.exit("Checkout requires a fixed commit SHA")
+
+          # 丢弃继承的 Git 追踪/配置/SSH 钩子；凭据只存在于单个 Git 进程树的精确 URL 头中。
+          clean_env = {k: v for k, v in os.environ.items() if not k.startswith("GIT_")}
+          clean_env.update(GIT_CONFIG_NOSYSTEM="1", GIT_CONFIG_SYSTEM="/dev/null",
+                           GIT_CONFIG_GLOBAL="/dev/null", GIT_TERMINAL_PROMPT="0")
+          config = {
+              "core.hooksPath": "/dev/null", "core.fsmonitor": "false",
+              "init.templateDir": "", "credential.helper": "",
+              "fetch.recurseSubmodules": "false", "submodule.recurse": "false",
+              "http.followRedirects": "false", "protocol.allow": "never",
+              "protocol." + urlsplit(SERVER).scheme + ".allow": "always",
+          }
+
+
+          def git(repo, *args, extra=None):
+              values = config | (extra or {})
+              env = clean_env | {"GIT_CONFIG_COUNT": str(len(values))}
+              for index, (key, value) in enumerate(values.items()):
+                  env[f"GIT_CONFIG_KEY_{index}"] = key
+                  env[f"GIT_CONFIG_VALUE_{index}"] = value
+              return subprocess.run(["git", "-C", str(repo), *args], env=env,
+                                    check=True, stdout=subprocess.PIPE).stdout
+
+
+          def materialize_governance(root):
+              # -r 列出任意深度的 gitlink，但不进入 submodule 内部；其它 gitlink 只记录、从不取回。
+              links = {}
+              for entry in git(root, "ls-tree", "-rz", "HEAD").split(b"\0"):
+                  if not entry:
+                      continue
+                  metadata, path = entry.split(b"\t", 1)
+                  mode, kind, commit = metadata.decode().split()
+                  if mode == "160000":
+                      links[path.decode()] = commit
+              for name in REPOSITORIES:
+                  if name not in links:
+                      raise ValueError("Governance gitlink is missing from the fixed commit")
+              raw = git(root, "config", "--no-includes", "--blob", "HEAD:.gitmodules", "--null", "--list")
+              entries = {}
+              for item in raw.split(b"\0"):
+                  if not item:
+                      continue
+                  key, value = item.decode().split("\n", 1)
+                  match = re.fullmatch(r"submodule\.(.+)\.(path|url)", key)
+                  if not match:
+                      continue
+                  name, field = match.groups()
+                  if name not in REPOSITORIES:
+                      continue
+                  if field in entries.setdefault(name, {}):
+                      raise ValueError("Duplicate candidate .gitmodules setting")
+                  entries[name][field] = value
+              # 先整体校验两个治理条目，再进行任何带凭据的取回。
+              for name, repository in REPOSITORIES.items():
+                  fields = entries.get(name, {})
+                  if fields.get("path") != name:
+                      raise ValueError("Governance submodule path is outside the reviewed allowlist")
+                  trusted_url = f"{SERVER}/weichen/{repository}.git"
+                  if fields.get("url") not in {SSH + repository + ".git", trusted_url}:
+                      raise ValueError("Governance submodule URL is outside the reviewed allowlist")
+              for name, repository in REPOSITORIES.items():
+                  url = f"{SERVER}/weichen/{repository}.git"
+                  # 仅持久化审查过的公开 URL，使 Git 在进程级配置消失后仍识别该 submodule。
+                  git(root, "config", f"submodule.{name}.url", url)
+                  git(root, "submodule", "update", "--init", "--checkout", "--", name,
+                      extra={f"submodule.{name}.url": url,
+                             f"submodule.{name}.update": "checkout",
+                             f"http.{url}.extraheader": "AUTHORIZATION: token " + component_token})
+                  child = root / name
+                  if git(child, "rev-parse", "HEAD").decode().strip() != links[name]:
+                      raise ValueError("Materialized governance gitlink does not match the fixed SHA")
+
+
+          try:
+              root = Path.cwd()
+              # 必须是干净的临时工作区；不复用既有 Git 状态。
+              if (root / ".git").exists():
+                  raise ValueError("Checkout requires a fresh workspace")
+              git(root, "init", "-q")
+              url = f"{SERVER}/{TARGET}.git"
+              git(root, "remote", "add", "origin", url)
+              git(root, "fetch", "--depth=1", "origin", sha,
+                  extra={f"http.{url}.extraheader": "AUTHORIZATION: token " + root_token})
+              git(root, "checkout", "-q", "--detach", "FETCH_HEAD")
+              materialize_governance(root)
+          except (ValueError, OSError, subprocess.CalledProcessError) as error:
+              sys.exit(f"Checkout refused: {error}")
+          print("Checkout complete; credentials were not persisted in Git configuration")
+          PY_CHECKOUT
+          unset TOKEN SUBMODULE_TOKEN
+      - name: Install Go 1.27.1
+        run: |
+          set -euo pipefail
+          curl -fsSL -o "$RUNNER_TEMP/go.tgz" https://mirrors.aliyun.com/golang/go1.27.1.linux-amd64.tar.gz
+          tar -C /usr/local -xzf "$RUNNER_TEMP/go.tgz"
+          ln -sfn /usr/local/go/bin/go /usr/local/bin/go
+          ln -sfn /usr/local/go/bin/gofmt /usr/local/bin/gofmt
+      - name: Validate agent execution configuration
+        run: scripts/agent-exec validate --repo .
+      - name: Governance check
+        run: scripts/dm governance check --repo .

.gitmodules

@@ -19,3 +19,12 @@
 [submodule "deps/agent-command"]
 	path = deps/agent-command
 	url = ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/Agent-Command.git
+[submodule "deps/agent-document-renderer"]
+	path = deps/agent-document-renderer
+	url = ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/Agent-Document-Renderer.git
+[submodule "deps/development-guidelines"]
+	path = deps/development-guidelines
+	url = ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/Development-Guidelines.git
+[submodule "deps/development-manager"]
+	path = deps/development-manager
+	url = ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/Development-Manager.git

.task/archive/feature-governance-adoption.md

@@ -0,0 +1,47 @@
+# Agent-System-Backend 采纳 development-governance-v2 治理套件 任务卡
+
+任务主记录：本文件随 PR 描述维护（PR 链接见下方"结果与验证"）。
+状态：进行中；owner：weichen。
+
+## 基线与授权
+
+- 权威仓：weichen/Agent-System-Backend；root_target：main；immediate_target：main
+- branch_kind：initiative；initiative_id：governance-adoption-Agent-System-Backend
+- R0（initial_main_sha）：7aa624370af347c3dd3740d7453b13af54ae3ed6；工作区：/home/weichen/projects/Agent-System-Backend-wt-feature-governance-adoption（worktree）；分支：feature/governance-adoption
+- 父任务信息（仅子任务填写）：无
+- accepting_requirements：false（单仓采纳 initiative，范围固定为下列十步，不接收新需求）
+- 需求分流：verdict=NEW；selected_initiative=无；候选=无；理由=development-governance-v2 Phase 6 每个正式仓库独立 initiative；triage 收据=无（本仓采纳前尚无 triage 入口）
+- 授权与交付终点：owner 已授权 development-governance-v2 全部实施（Agent-System-Dev 主记录 docs/superpowers/plans/2026-10-16-development-governance-v2-master.md）；终点为本 PR 合入 main 且采纳状态 active。分支保护与 tag 由用户执行。
+- 实施执行：agent-per-unit（配置：AGENT-EXECUTION.md；外部 Agent 一单元一新进程/会话/工作区）
+
+## 目标与非目标
+
+目标（Phase 6 十步）：固定 Guidelines SHA（deps/development-guidelines @ 2688fd2be6a52c0bf110e7e6366b6f291ab5e4eb）；增加 AGENT-EXECUTION.md；增加共享执行器薄入口（deps/development-manager @ bd3a7de57a3a9e1a4495b94c5fa5c08d71e7be8c + scripts/dm、scripts/agent-exec、scripts/task）；四条路由（implementation/repair/test/review）；任务卡模板与分支元数据；CI 中启用 schema 校验（.gitea/workflows/governance.yml：agent-exec validate + governance check）；一次正例运行；负例（缺配置、坏收据、越界路径、未知副作用）；独立 Review + CI；采纳状态 active。
+
+非目标：不改业务代码与既有测试；不改分支保护（由用户执行）；不发布 tag。
+
+引导说明：AGENT-EXECUTION.md 由 host 以固定版本治理套件（dm-server governance init @ bd3a7de57a3a9e1a4495b94c5fa5c08d71e7be8c）生成并作为引导配置提交（执行器运行前必须存在有效配置；沿用 DM 采纳先例）；其余文件由实施单元生成。
+
+## Agent 实施收据
+
+| 单元 ID | 预期范围 | 角色 | 候选顺序 | attempt | CLI/模型 | 终态 | transport | fallback | 源码外收据路径 |
+|---|---|---|---|---|---|---|---|---|---|
+| governance-adoption-Agent-System-Backend-r1 | 13 个允许路径（治理文件 + 两个 gitlink） | 39c17561 | implementation | cursor→antigravity→pi | run a1d7d74c（dm-server pinned，attempts=1） | cursor / not-observable | success | 472e5ab31331（apply 快进） | 否 | /tmp/gov-receipt-Agent-System-Backend-r1.json |
+
+## 同步记录
+
+| 节点 | sync_base_sha | tested_head_sha | checked_at | 结果 |
+|---|---|---|---|---|
+| 启动 | 7aa624370af347c3dd3740d7453b13af54ae3ed6 | 7aa624370af347c3dd3740d7453b13af54ae3ed6 | 2026-10-17T06:53:54Z | 一致 |
+
+## 结果与验证（完成后填写）
+
+- 结果：NOT_RUN
+- 验证：见下表（命令输出由 /tmp/gov-neg/ev.sh 写入 .task/evidence/governance-adoption/，SELF 除非另注）。
+- 影响与剩余项：NOT_RUN
+
+| 时间(UTC) | 命令 | 被测 HEAD | exit | 来源 | 摘要/位置 |
+|---|---|---|---|---|---|
+| 20261017T071539Z | `scripts/dm governance check --repo .` | 472e5ab31331 | 0 | SELF | ok fixtures；[输出](evidence/governance-adoption/00-20261017T071539Z.log) sha256:f7016c2e2af62a17 |
+| 20261017T071539Z | `scripts/agent-exec validate --repo .` | 472e5ab31331 | 0 | SELF | validate: ok；[输出](evidence/governance-adoption/01-20261017T071539Z.log) sha256:6ded2d91ffdfe365 |
+| 20261017T071539Z | `python3 /tmp/gov-neg/adopt_cases.py .` | 472e5ab31331 | 0 | SELF | [verdict] ALL PASS cases=5；[输出](evidence/governance-adoption/02-20261017T071539Z.log) sha256:2834e3639ade85b8 |

.task/archive/feature-rdm-two-trees-project-audit.md

@@ -0,0 +1,40 @@
+# W9 Backend project audit candidate
+
+- 状态：已完成（合入前闭合，2026-10-18）。本 W9 增量随统一渲染器 Backend 分支经 PR #209 合入 main；合入前已同步 Backend main `56a7f9f`（合并提交 `84a6f6f`，当前 HEAD CI vet-and-test/governance 成功）。同步时 main 的迁移 36 `instance_guard` 保持不变，本分支迁移整体顺延为 37–48（文中 v33/v34 等编号为同步前历史编号），跑过旧编号未合入构建的数据库须重建。用户 2026-10-18 授权按计划完成并收尾、业务验收在部署上自行进行；受信 tag `v0.6.0` 由用户亲手发布。
+- Scope: TT-A01/A02/A04/U04, approved stage 5 W9. Stage 6 local implementation; human review, formal acceptance, PR, CI, tag, and deployment are pending.
+- Branch/worktree: `feature/rdm-two-trees-project-audit` at `/home/weichen/projects/Agent-System-Backend-wt-feature-rdm-two-trees-project-audit`.
+- R0: Backend authoritative `origin/main` `5d5fc9891c0eb8994545ccb8b740535d9b99fb0e`; main was clean and equal to the fetched remote before this worktree was created. Core gitlink in this worktree is `5773e74086791731059730bd3726dc8c9cd1381f`.
+- Startup receipt: `/tmp/backend-w9-precheck-20261014-01.json` (SELF, exit 2, `SYNC_REQUIRED` for the separate Dev checkout `feature/rdm-increment-acceptance-note`, six commits behind Dev `origin/main`). This Backend task uses the independent-development path in Backend `AGENTS.md`; it does not write that Dev checkout or its task card. The receipt is preserved as a failure, not relabeled READY.
+- Approved affected design: `rdm-two-trees-stage6-audit-link-design-adjustment-r1.md`, SHA256 `385d9d7570217ddcce9fe60a60c99dc58c9a4875ad790584a724d09a210a6e52`; user approval in the task session covers this local Backend increment, not tag publication or Stage 7 acceptance.
+- Approved PostgreSQL cutoff adjustment: `rdm-two-trees-stage6-w9-pg-audit-cutoff-adjustment-r1.md`, SHA256 `2357b715a7c8f3451b34cc25a578d655e8a48f3f26d9cf7561ea7a13998ca857`; scope is isolated Backend implementation/testing, with no real database migration or release authorization.
+- Approved all-writers affected design: `rdm-two-trees-stage6-w9-all-writers-cutoff-adjustment-r1.md`, SHA256 `44f6f7cd34bf95a9c1eb844bfdd70a5c2233e1b5ffc89b3091359dcb5fc3b5d8`; the direct user approval allows the local v34 correction and isolated tests only.
+
+## Implemented local slice
+
+- Optional `ProjectAuditHost` and domain `audit.read` registration. A different plugin, absent registration, or unbound actor cannot read.
+- Store write snapshots the project from the owner-matched conversation; query requires the authenticated actor's owner and that immutable project. This deliberately excludes other members' private conversations and unbound historical rows, and does not move old receipts when a conversation changes projects.
+- Command audit stores the current verified account display name at write time; old rows expose `not-recorded`. Public receipts omit raw payload and parameter digest. Cursor uses project-and-owner scoped source cutoff.
+- Initial commit `c8dd169a1fdc1451fab3b475c14f9636a7f5bf6c` exposed only the actor-owned project slice. The next local increment fixes button actor propagation and adds a trusted domain-commit link publisher, verifier callback, exact linked metadata read, current `audit.read` and per-object metadata checks, and durable idempotency. Unlinked personal conversations remain private.
+- Trusted command dispatch now creates an operation ID before calling the compiled handler and passes that ID through `extension.Request`. The handler can commit the same ID with its domain event/outbox; the final Backend audit/receipt uses it. Client `params.operationId` is ignored. An outbox link request with `HostAuditOffset=0` resolves a unique committed host row by owner, fixed project, and operation ID; a missing row returns retryable `ErrProjectAuditPending`, while duplicate rows fail closed. The separate idempotency key still controls retry equivalence.
+- Independent review of `a8fa2fe` found two P2 security defects: clock-based operation IDs could collide; and `NewScopedHost(owner,"rdm")` let another compiled plugin self-report the publisher's plugin ID. The new local increment uses 192 bits from `crypto/rand` for each host-generated operation ID. Both zero-offset and explicit-offset publication require a unique committed row for owner/project/operation; a historical duplicate rejects publication, including attempts to link another private command. Verifier registration returns a private `ProjectAuditPublisherFactory` for the registering plugin's background outbox; a generic scoped Host has no publisher method. Fixed-clock concurrent IDs, forged params, ambiguous private offset, forged scoped Host, and legitimate registered publisher each have focused tests.
+- The minted publisher exposes only `ProjectAuditPublisher`, not the full owner-scoped `Host`; tests reject attempts to use `NewScopedHost` with a self-reported `rdm` string as publisher authority. A publisher is a registration-time capability, while `IdempotencyKey` remains the separate retry identity.
+- Exact-source linked reads do not enumerate hidden links or reveal raw payload, private conversation ID, or content. Body disclosure and a broad project link list are not implemented; the public coverage reports the narrower capability.
+- A PostgreSQL-only v33 default function takes a table-specific transaction advisory lock before assigning `command_audit.id`, making supported implicit-ID writes commit in source-offset order. Migration and each PG append/project page verify CACHE 1, ascending non-cyclic positive IDs, the exact guarded default expression, and the next ID above the committed maximum; unsafe drift fails closed. SQLite remains single-writer. The owner-only project page reports `committed-prefix` only after runtime checks. v34 below closes the explicit-ID bypass; online sequence maintenance remains prohibited.
+- Isolated PG RED receipt `/tmp/backend-w9-explicit-low-red-20261014-01.json` proved v33 still misreported `committed-prefix`: explicit ID 3 committed after normal ID 4 and disappeared across pages. Local v34 adds `ENABLE ALWAYS` insert and append-only mutation triggers. Every online INSERT checks READ COMMITTED, obtains the same transaction lock, and rejects a nonpositive, nonmonotone, or beyond-reserved ID. UPDATE/DELETE reject. PG append and every strong project page verify both trigger identities, exact event shape, and enablement; the existing default allocator also checks this guard. This is a local candidate, not yet independently reviewed or deployed.
+- `storage-migrate` now copies `command_audit` within one ACCESS EXCLUSIVE transaction: it disables only the named insert guard, copies explicit IDs, verifies count and checksum, advances the owned sequence only forward, restores and verifies the guard, and records done before commit. Failure rolls back table data, trigger state, and done; nontransactional `setval` may leave a safe forward gap. Idempotent done checks guard health before reporting success. Other tables retain their existing path.
+
+## Verification and remaining work
+
+- The session saw RED for the missing store and host interfaces, unscoped cutoff, cross-member private disclosure, and conversation-project reassignment before the respective fixes. These RED outputs were not captured by `make evidence`, so this card does not use them as formal evidence.
+- SELF receipt `/tmp/backend-w9-go-test-20261014-01.json`: `go test ./...`, exit 0, run on the pre-commit worktree based on R0.
+- SELF receipt `/tmp/backend-w9-build-20261014-01.json`: `CGO_ENABLED=0 go build ./cmd/agent-system`, exit 0, run on that pre-commit tree. Generated local binary removed after the build.
+- Historical SELF PostgreSQL receipt `/tmp/backend-w9-pg-cutoff-20261014-01.json`: isolated PostgreSQL 18.6 instance on port 55442 reproduced a low-ID transaction committing after a higher visible ID. `/tmp/backend-w9-pg-link-20261014-02.json` verifies the link table, retry/conflict behavior, and the pre-v33 cutoff counterexample. These receipts describe the old `offset-upper-bound-only` candidate, not the new v33 guarantee.
+- SELF PostgreSQL receipt `/tmp/backend-w9-pg-migrate-20261014-01.json`: isolated SQLite→PostgreSQL migration preserved one linked receipt and advanced its target sequence; the same migration ID replayed idempotently. The temporary PG instance was stopped and removed after verification.
+- SELF PostgreSQL receipt `/tmp/backend-w9-pg-operation-20261014-01.json`: a fresh isolated PG instance reran the link lookup, idempotency/conflict, and low-ID late-commit checks after trusted operation-offset resolution was added. The instance was stopped and removed.
+- New PG cross-page RED receipt `/tmp/backend-w9-pg-crosspage-red-20261014-01.json`: before v33, page 1 returned offsets 4 and 2, page 2 returned 1 after offset 3 committed, and the paged view omitted 3. The same test now passes with v33. Isolated PG tests also cover CACHE 10 counterexample/rejection, CACHE 1, sequence rewind into a vacant low ID, down/up with unchanged link IDs, advisory-lock timeout and rollback gaps, and SQLite→PG explicit-ID migration.
+- Historical pre-commit SELF load receipt `/tmp/backend-w9-pg-load-precommit-20261014-01.json` captured an initial v33 variant whose unlocked status function later produced false `cutoff unsafe` errors under concurrency; it is **not** valid performance acceptance evidence. The corrected status check reads committed MAX before non-MVCC sequence state and does not lock readers; the default ID allocator alone holds the transaction advisory lock and rechecks after `nextval`. `TestProjectAuditConcurrentReadWriteNeverReportsFalseDrift` and repeated PG load/cross-page runs protect that ordering. Three-condition pre-commit SELF raw receipts: `/tmp/backend-w9-pg-load-readlock-precommit-20261014-01.json` uses a test-only locked status wrapper, while `/tmp/backend-w9-pg-load-unlocked2-precommit-20261014-01.json` uses the final MAX-first unlocked status; each run also logs its v32 direct-INSERT baseline, PostgreSQL 18.6 version, 192 writes per mode/8 workers, elapsed time, p95, and throughput. The wrapper adds overhead and all measurements vary with hardware/load; no performance threshold has been approved, so they are Stage 6 cost evidence only.
+- Pre-commit SELF `/tmp/backend-w9-default-drift-red-20261014-01.json` showed that a replacement default containing the guarded function name but executing unguarded `nextval` was accepted; `/tmp/backend-w9-default-drift-green-20261014-01.json` verifies exact-expression rejection. Pre-commit SELF `/tmp/backend-w9-precommit-all-20261014-02.json` and `/tmp/backend-w9-precommit-pg-20261014-02.json` passed before this last guard tightening; fixed-HEAD runs are required below.
+- After the guard tightening, pre-commit SELF receipts `/tmp/backend-w9-precommit-all-final-20261014-01.json` (`go test ./... -count=1`), `/tmp/backend-w9-precommit-pg-final-20261014-01.json` (isolated PG store/storage-migrate), and `/tmp/backend-w9-precommit-pg-race-20261014-01.json` (cross-page/concurrent read-write with race detector) all exited 0. These still identify the dirty pre-commit tree, so they do not replace fixed-HEAD verification.
+- v34 pre-commit SELF `/tmp/backend-w9-allwriters-load-precommit-20261014-01.json` records isolated PostgreSQL 18.6, three runs of 192 writes per mode with 8 workers, comparing v32 direct INSERT with v34 guarded `Store.AppendAudit`; it also logs three mixed runs of 180 writes with 6 writers and 160 200-row pages with 4 readers. Protected write throughput ranged about 2.7–3.0k/s, write p95 6.4–6.6ms, and mixed large-page p95 1.2–1.9ms on this one host. These are SELF cost signals with no approved threshold and no Stage 7 acceptance meaning; fixed-HEAD tests still follow.
+- Integration constraint: this branch uses schema v31 (audit attribution), v32 (links), v33 (PG implicit cutoff), and v34 (all-writer guard), while the independent W6 Backend branch also has a local v31. Neither branch has consumed the other's unmerged work. After the first branch lands, the later branch owner must sync the new main, renumber its unpublished migrations without rewriting an already released version, and rerun fresh/old SQLite and PG migration plus combined regression on the actual merged source. These isolated tests do not prove W6+W9 compatibility.
+- Required next W9 work: real RDM committed-event verifier/outbox consumer, Backend project-event source, run ID propagation, model/tool/background receipts, body/detail disclosure, broad authorized linked-operation pagination, history/export, and combined product verification remain unfinished. A domain commit followed by a lost Backend audit append leaves the link pending; recovery must retain and reconcile that unknown state without claiming a host receipt. Exact-link and owner-only paging do not satisfy Stage 7 audit acceptance. PostgreSQL v33 adds a global command-audit append lock; its measured wait/throughput cost has no approved performance threshold and needs human Stage 6 review.

.task/evidence/governance-adoption/00-20261017T071539Z.log

@@ -0,0 +1,19 @@
+command: scripts/dm governance check --repo . 
+cwd: /home/weichen/projects/Agent-System-Backend-wt-feature-governance-adoption
+head: 472e5ab313318181f1ecad1a351a0c612c453ac0
+exit: 0
+utc: 20261017T071539Z
+---
+ok gitlink deps/development-guidelines
+ok gitlink deps/development-manager
+ok agent-execution
+ok file AGENTS.md
+ok file PROJECT.md
+ok file policy/guidelines-adoption.md
+ok file .task/templates/task-card.md
+ok executable scripts/agent-exec
+ok executable scripts/hooks/pre-commit
+ok executable scripts/dm
+ok executable scripts/task
+ok adoption status
+ok fixtures

.task/evidence/governance-adoption/01-20261017T071539Z.log

@@ -0,0 +1,7 @@
+command: scripts/agent-exec validate --repo . 
+cwd: /home/weichen/projects/Agent-System-Backend-wt-feature-governance-adoption
+head: 472e5ab313318181f1ecad1a351a0c612c453ac0
+exit: 0
+utc: 20261017T071539Z
+---
+validate: ok

.task/evidence/governance-adoption/02-20261017T071539Z.log

@@ -0,0 +1,13 @@
+command: python3 /tmp/gov-neg/adopt_cases.py . 
+cwd: /home/weichen/projects/Agent-System-Backend-wt-feature-governance-adoption
+head: 472e5ab313318181f1ecad1a351a0c612c453ac0
+exit: 0
+utc: 20261017T071539Z
+---
+[object] Agent-System-Backend-wt-feature-governance-adoption HEAD=472e5ab313318181f1ecad1a351a0c612c453ac0
+PASS positive-run-apply: run exit=0 terminal=success apply exit=0 head=cb5172f341c9
+PASS missing-config: run exit=2 terminal=invalid-config validate exit=2
+PASS bad-receipt: apply exit=4 head_unchanged=True msg=apply: no local integrity record: changed paths do not match the transport diff
+PASS out-of-scope-path: run exit=5 terminal=scope-expansion transport=False
+PASS unknown-side-effect: run exit=4 terminal=failed-unknown transport=False
+[verdict] ALL PASS cases=5

.task/feature-regulations-kb-ext20.md

@@ -0,0 +1,30 @@
+# feature/regulations-kb-ext20 任务卡
+
+任务主记录：本文件随 PR 描述维护。
+状态：已完成（合入前闭合）；owner：weichen。PR：https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Backend/pulls/212
+
+## 基线与授权
+
+- 权威仓：ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/Agent-System-Backend.git；root_target：main；immediate_target：main
+- branch_kind：standalone；跨仓总任务：Agent-System-Dev `feature/regulations-kb`（[Dev PR #614](https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/614)）
+- R0（initial_main_sha）：cac60c0；工作区：/home/weichen/projects/Agent-System-Backend-wt-feature-regulations-kb-ext20；分支：feature/regulations-kb-ext20
+- 授权与交付终点：用户 2026-10-18 /goal 指示按法规知识库计划实现全部内容；本任务交付 U9 的基座公开契约 EXT-20（提案：Documents `docs/proposals/2026-10-18-ext-20-regulations-provider.md`，分支 `feature/regulations-kb-u9-contract`），经 PR 合入 main。不含法规提供方实现（属 KB 仓）与 RDM 消费（U6）。
+- 实施执行：agent-per-unit（配置：AGENT-EXECUTION.md）
+
+## 目标与非目标
+
+- 目标：`pkg/extension` 新增 `RegulationsProvider`/`RegulationsRegistrar`/`RegulationsHost` 与 DTO；进程内注册槽仅接受插件 `kbreg` 且只注册一次；分发 Host 实现四个方法并强制调用方身份、查询最小化（机密词拒绝、长度限制）、状态透传与无明文审计；快照、边界与契约/兼容测试。
+- 非目标：不实现搜索或语料检索；不改 `KnowledgeSearch` 语义。
+
+## Agent 实施收据
+
+| 单元 ID | 预期范围 | 角色 | 候选顺序 | attempt | CLI/模型 | 终态 | transport | fallback | 源码外收据路径 |
+|---|---|---|---|---|---|---|---|---|---|
+| backend-ext20-regulations-provider | pkg/extension、internal/app | implementation | cursor, antigravity, pi | 1 | cursor-agent-stable / auto（session not-observable，新进程） | success | refs/agent-exec/cfc2e055f212789112cf11716f5649c5/c04b36e76696 → aaed108（apply 快进） | 否 | /tmp/regkb-u9-receipt.json |
+
+## 结果与验证（完成后填写）
+
+- 结果：`pkg/extension/regulations.go`（EXT-20 接口、DTO、状态常量、`ErrRegulationsUnavailable`）、`surface.txt` 与 `SurfaceVersion` 2.15.0-experimental；`internal/app/regulations.go` 注册槽（仅 kbreg、一次、非 nil；声明式拒绝）与 inprocHost 四方法（有效账户检查、调用方取自分发上下文、schema 校验、查询去空白/1–256 字符/排除词拒绝且不调用提供方、状态透传、审计仅含修订/计数/状态/查询 sha256）；单元与兼容测试。
+- 验证（SELF，host 于 HEAD aaed108）：`go vet ./pkg/extension/ ./internal/app/` 与 `go test ./pkg/extension/... ./internal/app/...` PASS；全量 `GOWORK=off go vet ./... && go test -count=1 ./...` 40 包 ok，仅 `pkg/identity TestDSNFileMode` 失败——在未改动基线 cac60c0 上同样失败（本机环境问题，本变更未触及 pkg/identity），以 CI（GATE）为准。
+- Review：host 主模型审阅实际 diff（base 3187a00 / head aaed108），与提案第 2、4、5 节一致，无阻塞项。
+- 影响与剩余项：新增可选能力，未注册提供方时返回不可用，既有行为不变。

.task/templates/task-card.md

@@ -0,0 +1,66 @@
+# <任务标题> 任务卡
+
+任务主记录：<Issue/PR 链接，或注明"本文件随 PR 描述维护">。
+状态：<进行中 / 待审核 / 已合入 / 已放弃>；owner：<填写>。
+
+## 基线与授权
+
+- 权威仓：<仓 URL 或逻辑 ID>；root_target：main；immediate_target：<main 或 feature/initiative>
+- branch_kind：<initiative | child | standalone>；initiative_id：<稳定 ID，普通任务为空>
+- R0（initial_main_sha）：<完整 SHA>；工作区：<路径>（worktree / clone）；分支：<feature|fix|hotfix/...>
+- 父任务信息（仅子任务填写）：parent_branch=<父分支>；parent_head_sha=<SHA>；parent_pr=<父 PR>
+- accepting_requirements：<true | false>（仅 initiative 可为 true；冻结后为 false）
+- 需求分流：verdict=<JOIN | NEW>；selected_initiative=<分支或无>；候选=<分支@HEAD 列表或无>；理由=<不适配/适配依据>；triage 收据=<源码外路径与摘要>
+- 授权与交付终点：<本次允许的动作与终点；未授权事项写明>
+- 实施执行：agent-per-unit（配置：AGENT-EXECUTION.md；外部 Agent 一单元一新进程/会话/工作区）
+
+## 目标与非目标
+
+<预期结果、受影响入口/模块/契约；明确不做什么。>
+
+## Agent 实施收据
+
+按根目录 AGENT-EXECUTION.md 路由；外部 Agent 一单元一新进程/会话/隔离工作区。实施、修复与测试必须通过登记的候选执行；未配置或候选安全耗尽停在 unavailable/blocked，禁止 host 隐式代写。
+
+| 单元 ID | 预期范围 | 角色 | 候选顺序 | attempt | CLI/模型 | 终态 | transport | fallback | 源码外收据路径 |
+|---|---|---|---|---|---|---|---|---|---|
+| 待定义 | — | NOT_RUN | NOT_RUN | NOT_RUN | NOT_RUN | NOT_RUN | NOT_RUN | NOT_RUN | — |
+
+## 复用材料（task-start 自动检索结果摘录）
+
+- 相关近期提交：<git log -- <paths> 命中；无则写无>。
+- 相关经验条目：<检索命中；无则写无>。
+
+## 同步记录
+
+| 节点 | sync_base_sha | tested_head_sha | checked_at | 结果 |
+|---|---|---|---|---|
+| 启动 | <R0> | <HEAD> | <日期时间> | <一致/已同步> |
+| 验收前 | <填写> | <填写> | <填写> | <填写> |
+
+字段没有发生的写"无"，不省略。本卡与 PR 描述同源：开 PR 时将"目标与非目标、结果与验证、影响与剩余项"复制进 PR 描述，不另写第二份。
+
+## 交付调度（有多个就绪任务时）
+
+- 调度记录 / entry_id / 当前 attempt_id：<平台或调度服务链接及标识；未入队写无>。
+- 入队源 HEAD / owner / 依赖：<完整 SHA、身份、依赖或无>。
+- 固定候选引用：<调度尝试中的 base/head、组件与配置；未固定写无>。
+- 窗口、最终 CI、Review 与真实合入结果：<引用调度记录及原始证据，不复制全队列>。
+
+定义见 [合入调度与 CI 分配](../standards/merge-queue.md)。本段在候选固定前整理；固定后先使用源码之外的记录保存运行结果，再按项目闭合流程回填。
+
+## 结果与验证（完成后填写）
+
+- 结果：<交付了什么；未发生写无>。
+- 验证：<结论性摘要：PASS/FAIL/SKIP/NOT_RUN 逐项；逐条证据见下表，来源标注与写入规则见 [按影响选择验证与证据](../standards/verification.md)>。
+- 影响与剩余项：<影响面、遗留风险、后续任务>。
+
+| 时间(UTC) | 命令 | 被测 HEAD | exit | 来源 | 摘要/位置 |
+|---|---|---|---|---|---|
+| <时间> | <命令；由项目 evidence 工具写入，无工具时附命令+对象 SHA+输出 digest 并标 SELF> | <HEAD> | <exit> | GATE/REPLAY/SELF | <摘要/位置> |
+
+## 回收（task-finish）
+
+- 合入核对：<分支已包含于目标分支的核对输出>。
+- 未跟踪/ignored 文件处置：<归档/可再生/存疑 逐项；无则写无>。
+- 回收动作：<worktree remove、分支删除、prune；放弃路径注明原因>。

AGENT-EXECUTION.md

@@ -0,0 +1,67 @@
+# Project Agent Execution Configuration
+# 项目工程 Agent 执行路由配置
+
+适用范围：定义本项目中由 AI / Agent 主导的代码实施、修复、测试与审阅所调用的 Agent CLI 路由。
+解析器识别正文中唯一一个 ```agent-execution 代码块。正文外的说明文字可根据项目需要调整。
+
+通用硬规则见 Development-Guidelines 的 [Agent 执行与协作契约](deps/development-guidelines/standards/agent-execution.md)。
+本配置为项目本地路由权威，声明具体的候选 profile、尝试次数上限、超时、集成入口与豁免路径；
+代码块须通过 `deps/development-guidelines/templates/schemas/agent-execution.schema.json` 校验后才能登记为 active。
+`fallback_to_host` 只能为 `never`；旧值 `all-unavailable` 仅供迁移工具读取，不能通过准入。
+下例的 CLI 名称、命令与路径均为占位，按项目实际执行器替换。
+
+```agent-execution
+schema: agent-execution/v1
+
+execution:
+  fresh_process_per_unit: true
+  permission: run-everything
+  fallback_to_host: never
+  max_parallel: 3
+  timeout_seconds: 7200
+  idle_timeout_seconds: 600
+  summary_bytes: 16384
+  raw_output_bytes: 10485760
+  max_attempts_per_profile: 3
+  emergency_profile: codex
+
+roles:
+  implementation: [cursor, antigravity, pi]
+  repair: [cursor, antigravity, pi]
+  test: [pi, antigravity, cursor]
+  review: [pi, antigravity, cursor, codex]
+
+profiles:
+  cursor:
+    adapter: cursor
+    executable: "cursor-agent-stable"
+    model: auto
+    enabled: true
+
+  antigravity:
+    adapter: antigravity
+    executable: agy
+    model: auto
+    enabled: true
+
+  pi:
+    adapter: pi
+    executable: pi
+    model: auto
+    enabled: true
+
+  codex:
+    adapter: codex
+    executable: codex
+    model: auto
+    enabled: true
+
+integration:
+  exempt_paths: [".task/**", "docs/superpowers/specs/**", "docs/superpowers/plans/**"]
+  transport:
+    command: "scripts/agent-exec apply"
+  admission:
+    command: "scripts/agent-exec admit"
+  cleanup:
+    command: "scripts/agent-exec cleanup"
+```

AGENTS.md

@@ -34,3 +34,21 @@
 - **SSH key**：`~/.ssh/home_gitea`（ED25519，公钥指纹
   `SHA256:GYXaOXIMeloQ1fKSfdJ/ndgPQzs/Ix7Hk62ekfkfQ20`，Gitea 侧密钥名 GMKtec）；
   `~/.ssh/config` 已有 `git-ssh.u1680832.nyat.app` 主机条目，克隆/推送直接可用。
+
+## Agent 执行与新项目准入（强制）
+
+1. 缺 Guidelines 固定版本（`deps/development-guidelines` gitlink 未就绪或 HEAD 不符）时，Agent 只能只读分析，不得实施。
+2. 缺有效 `AGENT-EXECUTION.md`（`scripts/dm governance check` 未通过）时禁止 AI 实施。
+3. 缺共享执行器（`scripts/agent-exec` 或 `deps/development-manager` 不可用）时，状态为 `blocked/unavailable`，不得改由 host 替代。
+4. 不允许 host 代写实施单元；实施、修复与测试必须经 `AGENT-EXECUTION.md` 登记的候选执行。
+5. 人类直接开发按其自身授权与项目规则进行，不受本条款约束。
+6. 分支保护与规范 tag 由用户负责设置与维护，Agent 不得代为设置。
+
+入口：
+
+- 需求分流：`scripts/task triage discover|decide|verify`
+- 任务启动：`scripts/task start …`
+- PR 检查：`scripts/task pr-check …`
+- Agent 执行：`scripts/agent-exec run|apply|admit|validate`
+
+AI 实施单元仅通过 `scripts/agent-exec run` 运行（见 AGENT-EXECUTION.md），其结果经 `scripts/agent-exec apply` 集成。

PROJECT.md

@@ -9,6 +9,8 @@
 
 - `go test ./...` — 单元 + 端到端（mock runner 全链路：流式/折叠部件/HITL 三分支/子代理任务树/工件/上传解析/中文检索/SSE 在线与重放/命令路由/插件装卸 fail-closed）。
 - `CGO_ENABLED=0 go build ./cmd/agent-system` — 单二进制（静态，内嵌前端后）。
+- `scripts/agent-exec validate --repo .` — 校验 AGENT-EXECUTION.md 执行路由配置。
+- `scripts/dm governance check --repo .` — 只读核验治理文件与 gitlink（CI：.gitea/workflows/governance.yml）。
 - 存储：嵌入式 SQLite（modernc.org/sqlite，纯 Go）；FTS5 全文 + CJK LIKE 兜底。
 - 依赖：agent-system-core（deps submodule + replace）、agent-native（runtime/llm 复用）。
 

cmd/agent-system/account_io.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+)
+
+func runCapabilities(args []string) int {
+	fs := flag.NewFlagSet("capabilities", flag.ExitOnError)
+	asJSON := fs.Bool("json", false, "以 JSON 打印能力，不打开数据库")
+	_ = fs.Parse(args)
+	caps := map[string]any{
+		"accountTransaction": true,
+		"accountAudit":       true,
+		"accountOpsOpen":     true,
+		"passwordStdin":      true,
+		"dsnFile":            true,
+		"outFile":            true,
+	}
+	if !*asJSON {
+		fmt.Fprintln(os.Stderr, "用法：agent-system capabilities --json")
+		return 2
+	}
+	enc := json.NewEncoder(os.Stdout)
+	enc.SetIndent("", "  ")
+	if err := enc.Encode(caps); err != nil {
+		fmt.Fprintln(os.Stderr, "capabilities:", err)
+		return 1
+	}
+	return 0
+}
+
+func resolveAccountDSN(flagDSN, dsnFile string) (string, error) {
+	if flagDSN != "" {
+		fmt.Fprintln(os.Stderr, "warning: --dsn is deprecated; use AGENT_SYSTEM_DSN or --dsn-file")
+	}
+	if dsnFile != "" {
+		info, err := os.Stat(dsnFile)
+		if err != nil {
+			return "", err
+		}
+		if info.Mode().Perm() != 0o600 {
+			return "", fmt.Errorf("dsn file %s must be mode 0600", dsnFile)
+		}
+		raw, err := os.ReadFile(dsnFile)
+		if err != nil {
+			return "", err
+		}
+		return string(trimNewline(raw)), nil
+	}
+	if env := os.Getenv("AGENT_SYSTEM_DSN"); env != "" {
+		return env, nil
+	}
+	return flagDSN, nil
+}
+
+func resolveAccountPassword(flagPassword string, fromStdin bool) (string, error) {
+	if flagPassword != "" {
+		fmt.Fprintln(os.Stderr, "warning: --password is deprecated; use --password-stdin")
+	}
+	if !fromStdin {
+		return flagPassword, nil
+	}
+	raw, err := io.ReadAll(os.Stdin)
+	if err != nil {
+		return "", err
+	}
+	return string(trimNewline(raw)), nil
+}
+
+func writeExclusiveSecret(path, body string) error {
+	f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0o600)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	_, err = io.WriteString(f, body+"\n")
+	return err
+}
+
+func trimNewline(raw []byte) []byte {
+	for len(raw) > 0 && (raw[len(raw)-1] == '\n' || raw[len(raw)-1] == '\r') {
+		raw = raw[:len(raw)-1]
+	}
+	return raw
+}

cmd/agent-system/account_io_test.go

@@ -0,0 +1,166 @@
+package main
+
+import (
+	"agent-system-backend/internal/store"
+	"bytes"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+func accountCLI(t *testing.T, args ...string) (int, string) {
+	t.Helper()
+	out, err := os.CreateTemp(t.TempDir(), "capture-")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer out.Close()
+	oldOut, oldErr := os.Stdout, os.Stderr
+	os.Stdout = out
+	os.Stderr = out
+	defer func() { os.Stdout = oldOut; os.Stderr = oldErr }()
+	rc := runUser(args)
+	out.Seek(0, 0)
+	raw, err := io.ReadAll(out)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return rc, string(raw)
+}
+func cliStore(t *testing.T) (string, *store.Store) {
+	t.Helper()
+	t.Setenv("AGENT_SYSTEM_DSN", "")
+	dir := t.TempDir()
+	s, e := store.OpenSQLite(filepath.Join(dir, "agent-system.db"))
+	if e != nil {
+		t.Fatal(e)
+	}
+	t.Cleanup(func() { s.Close() })
+	if e := s.EnsureSystemIdentity("fixture", "sqlite"); e != nil {
+		t.Fatal(e)
+	}
+	return dir, s
+}
+func TestOutputFileAppliesToEveryCredentialCommand(t *testing.T) {
+	for _, sub := range []string{"create", "initialize-account", "bootstrap-admin"} {
+		t.Run(sub, func(t *testing.T) {
+			dir, s := cliStore(t)
+			if sub != "bootstrap-admin" {
+				if _, e := s.BootstrapFirstAdminWrite(store.AccountWrite{Owner: "root", Name: "Root", Actor: "test"}); e != nil {
+					t.Fatal(e)
+				}
+			}
+			out := filepath.Join(t.TempDir(), "secret")
+			args := []string{sub, "--data", dir, "--owner", "ada", "--out-file", out}
+			if sub == "initialize-account" {
+				a, e := s.CreatePendingAccount("root", "ada", store.AccountProfile{Name: "Ada"})
+				if e != nil {
+					t.Fatal(e)
+				}
+				args = append(args, "--user-id", a.ID, "--expected-state-version", "1", "--expected-generation", "0")
+			}
+			rc, _ := accountCLI(t, args...)
+			if rc != 0 {
+				t.Fatalf("credential command failed: %d", rc)
+			}
+			info, e := os.Stat(out)
+			if e != nil {
+				t.Fatal("credential output file missing")
+			}
+			if info.Mode().Perm() != 0600 {
+				t.Fatal("credential output permissions are not private")
+			}
+		})
+	}
+}
+func TestExistingOutputAndConflictingFormatsRefuseBeforeMutation(t *testing.T) {
+	for _, kind := range []string{"existing", "conflicting"} {
+		t.Run(kind, func(t *testing.T) {
+			dir, s := cliStore(t)
+			out := filepath.Join(t.TempDir(), "secret")
+			args := []string{"create", "--data", dir, "--owner", "ada", "--out-file", out}
+			if kind == "existing" {
+				if e := os.WriteFile(out, []byte("existing"), 0600); e != nil {
+					t.Fatal(e)
+				}
+			} else {
+				args = append(args, "--out", filepath.Join(t.TempDir(), "json-secret"))
+			}
+			rc, _ := accountCLI(t, args...)
+			if rc == 0 {
+				t.Fatal("unsafe output selection succeeded")
+			}
+			if _, e := s.GetUser("ada"); e == nil {
+				t.Fatal("output refusal happened after account mutation")
+			}
+		})
+	}
+}
+
+func TestAPIKeyCreateUsesExclusivePrivateOutput(t *testing.T) {
+	if dir := os.Getenv("U7_APIKEY_CHILD_DIR"); dir != "" {
+		rc := runAPIKey([]string{"create", "--data", dir, "--owner", "ada", "--name", "fixture", "--out-file", os.Getenv("U7_APIKEY_CHILD_OUT")})
+		if rc != 0 {
+			t.Fatal("apikey create rejected its private output destination")
+		}
+		return
+	}
+	for _, existing := range []bool{false, true} {
+		name := "new"
+		if existing {
+			name = "existing"
+		}
+		t.Run(name, func(t *testing.T) {
+			dir, st := cliStore(t)
+			if err := st.CreateAccount("ada", "Ada", "", false); err != nil {
+				t.Fatal(err)
+			}
+			out := filepath.Join(t.TempDir(), "credential")
+			if existing {
+				if err := os.WriteFile(out, []byte("preserve"), 0600); err != nil {
+					t.Fatal(err)
+				}
+			}
+			cmd := exec.Command(os.Args[0], "-test.run=^TestAPIKeyCreateUsesExclusivePrivateOutput$")
+			cmd.Env = append(os.Environ(), "U7_APIKEY_CHILD_DIR="+dir, "U7_APIKEY_CHILD_OUT="+out)
+			var stdout, stderr bytes.Buffer
+			cmd.Stdout = &stdout
+			cmd.Stderr = &stderr
+			err := cmd.Run()
+			if existing {
+				if err == nil {
+					t.Fatal("existing output was overwritten or mutation succeeded")
+				}
+				raw, readErr := os.ReadFile(out)
+				if readErr != nil || string(raw) != "preserve" {
+					t.Fatal("existing output was modified")
+				}
+				keys, listErr := st.ListAPIKeys("ada")
+				if listErr != nil || len(keys) != 0 {
+					t.Fatal("mutation happened before output preflight")
+				}
+				return
+			}
+			if err != nil {
+				t.Fatal("new private output was rejected")
+			}
+			info, statErr := os.Stat(out)
+			if statErr != nil || info.Mode().Perm() != 0600 {
+				t.Fatal("credential output missing or not private")
+			}
+			raw, readErr := os.ReadFile(out)
+			if readErr != nil || len(raw) == 0 {
+				t.Fatal("credential output empty")
+			}
+			if bytes.Contains(stdout.Bytes(), bytes.TrimSpace(raw)) {
+				t.Fatal("credential was written to stdout")
+			}
+			keys, listErr := st.ListAPIKeys("ada")
+			if listErr != nil || len(keys) != 1 {
+				t.Fatal("successful issue was not committed")
+			}
+		})
+	}
+}

cmd/agent-system/env.go

@@ -0,0 +1,150 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"agent-system-backend/internal/execenv"
+)
+
+func runEnv(args []string) int {
+	if len(args) == 0 {
+		fmt.Fprintln(os.Stderr, "用法：agent-system env <ensure|lock|gc|doctor|rebase|python> --root <dir>")
+		return 2
+	}
+	sub := args[0]
+	fs := flag.NewFlagSet("env "+sub, flag.ExitOnError)
+	rootPath := fs.String("root", "", "环境根目录")
+	ttl := fs.Duration("ttl", 7*24*time.Hour, "gc 保留窗口")
+	bin := fs.String("bin", "", "python link 要指向的解释器")
+	_ = fs.Parse(args[1:])
+	if *rootPath == "" {
+		fmt.Fprintln(os.Stderr, "env: --root 必填")
+		return 2
+	}
+	root, err := execenv.Open(*rootPath)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "env:", err)
+		return 1
+	}
+	ctx := context.Background()
+	switch sub {
+	case "ensure":
+		py, err := root.EnsurePython(ctx)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "env ensure:", err)
+			return 1
+		}
+		id, err := execenv.NewBroker(root, nil, execenv.Pip{Python: py}).EnsureBase(ctx)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "env ensure:", err)
+			return 1
+		}
+		fmt.Println(id)
+		return runDoctor(ctx, root, py, true)
+	case "lock":
+		id, err := root.CurrentBase()
+		if err != nil || id == "" {
+			fmt.Fprintln(os.Stderr, "env lock: 没有 current 基础层")
+			return 1
+		}
+		lock, err := root.ReadLock(id)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "env lock:", err)
+			return 1
+		}
+		enc := json.NewEncoder(os.Stdout)
+		enc.SetIndent("", "  ")
+		if err := enc.Encode(lock); err != nil {
+			fmt.Fprintln(os.Stderr, "env lock:", err)
+			return 1
+		}
+		return 0
+	case "gc":
+		removed, err := execenv.NewBroker(root, nil, execenv.Pip{}).GC(*ttl)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "env gc:", err)
+			return 1
+		}
+		for _, id := range removed {
+			fmt.Println(id)
+		}
+		return 0
+	case "doctor":
+		py, ok := root.PythonBin()
+		if !ok {
+			py = "/usr/bin/python3"
+		}
+		return runDoctor(ctx, root, py, true)
+	case "rebase":
+		py, err := root.EnsurePython(ctx)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "env rebase:", err)
+			return 1
+		}
+		id, err := execenv.NewBroker(root, nil, execenv.Pip{Python: py}).Rebase(ctx)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "env rebase:", err)
+			return 1
+		}
+		fmt.Println(id)
+		return 0
+	case "python":
+		action := "install"
+		if fs.NArg() > 0 {
+			action = fs.Arg(0)
+		}
+		switch action {
+		case "install":
+			py, err := root.EnsurePython(ctx)
+			if err != nil {
+				fmt.Fprintln(os.Stderr, "env python:", err)
+				return 1
+			}
+			fmt.Println(py)
+			return 0
+		case "link":
+			if *bin == "" {
+				fmt.Fprintln(os.Stderr, "env python link: --bin 必填")
+				return 2
+			}
+			if err := root.LinkPython(*bin); err != nil {
+				fmt.Fprintln(os.Stderr, "env python link:", err)
+				return 1
+			}
+			fmt.Println(*bin)
+			return 0
+		default:
+			fmt.Fprintln(os.Stderr, "env python: install | link")
+			return 2
+		}
+	default:
+		fmt.Fprintf(os.Stderr, "env: 未知动作 %s\n", sub)
+		return 2
+	}
+}
+
+func runDoctor(ctx context.Context, root *execenv.Root, py string, sandbox bool) int {
+	var pyPath []string
+	if id, err := root.CurrentBase(); err == nil && id != "" {
+		pyPath = append(pyPath, root.LayerDir(id))
+	}
+	mounts := append([]string{}, pyPath...)
+	if prefix := root.PythonPrefix(); prefix != "" {
+		mounts = append(mounts, prefix)
+	}
+	if resolved, err := filepath.EvalSymlinks(py); err == nil {
+		py = resolved
+	}
+	if err := execenv.Doctor(ctx, py, pyPath, nil, sandbox, mounts); err != nil {
+		fmt.Fprintln(os.Stderr, "env doctor:", err)
+		return 1
+	}
+	fmt.Println("doctor ok")
+	return 0
+}

cmd/agent-system/main.go

@@ -15,6 +15,7 @@ import (
 	"agent-system-backend/internal/app"
 	"agent-system-backend/internal/config"
 	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
 	"agent-system-backend/pkg/identity"
 )
 
@@ -43,9 +44,15 @@ func main() {
 			os.Exit(runUser(os.Args[2:]))
 		case "identity":
 			os.Exit(runIdentity(os.Args[2:]))
+		case "capabilities":
+			os.Exit(runCapabilities(os.Args[2:]))
+		case "env":
+			os.Exit(runEnv(os.Args[2:]))
+		case "migrate":
+			os.Exit(runMigrate(os.Args[2:]))
 		default:
 			fmt.Fprintf(os.Stderr, "agent-system: 未知子命令 %s\n", os.Args[1])
-			fmt.Fprintln(os.Stderr, "用法：agent-system <serve|version|identity|user|apikey|config> [参数]")
+			fmt.Fprintln(os.Stderr, "用法：agent-system <serve|version|identity|user|apikey|config|capabilities|env|migrate> [参数]")
 			os.Exit(2)
 		}
 	}
@@ -65,20 +72,35 @@ func main() {
 	execBackend := fs.String("exec-backend", "", "执行后端：direct（默认，现状直启）| sandbox（bwrap 隔离档：断网、只读系统根、仅会话目录可写、进程数限额）")
 	execDepsDir := fs.String("exec-deps-dir", "", "sandbox 档只读依赖层目录（site-packages 等；空=不挂载）")
 	execWorkspace := fs.String("exec-workspace", "", "sandbox 档工作区模式：空=直写会话目录 | overlay=冻结基底+私有 upper+CAS 回收（S0）")
+	execEnvRoot := fs.String("exec-env-root", "", "分层 Python 环境根（解释器、基础层、扩展层；空=不启用）")
 	tier := fs.String("tier", "", "部署档：空=auto（DSN→PG，否则 SQLite）| local（SQLite，不允许 DSN）| team（PG fail-closed：缺 DSN/未认证拒绝启动，PG 故障拒绝就绪）")
 	pgMaxOpen := fs.Int("pg-max-open", 0, "PG 最大打开连接（0=默认 16）")
 	pgMaxIdle := fs.Int("pg-max-idle", 0, "PG 最大空闲连接（0=默认 8）")
 	pgIdleSec := fs.Int("pg-conn-max-idle-sec", 0, "PG 空闲连接回收秒数（0=默认 300）")
 	pgLifetimeSec := fs.Int("pg-conn-max-lifetime-sec", 0, "PG 连接最长生命周期秒数（0=不限）")
 	pgQueryTimeoutSec := fs.Int("pg-query-timeout-sec", 0, "PG statement_timeout 秒数（0=不限；覆盖全部业务查询）")
+	adoptGuard := fs.Bool("adopt-instance-guard", false, "数据库被替换或锁文件被重建后，显式重写 SQLite 活动服务守卫")
+	extension.RegisterCLIFlags(fs)
 	fs.Parse(os.Args[1:])
+	handled, hookErr := extension.RunCLIHooks(extension.Options{
+		Addr: *addr, DataDir: *data, PluginsDir: *pluginsDir, Mock: *mock,
+		StorageDSN: *dsn, AuthMode: *auth, DisableExecTools: *noExec, ExecBackend: *execBackend,
+	})
+	if hookErr != nil {
+		fmt.Fprintln(os.Stderr, "agent-system:", hookErr)
+		os.Exit(1)
+	}
+	if handled {
+		return
+	}
 	cliSet := visited(fs)
+	delete(cliSet, "adopt-instance-guard")
 
 	resolved, err := config.Load(*cfgFile, os.LookupEnv, config.Config{
 		Addr: *addr, DataDir: *data, PluginsDir: *pluginsDir, Mock: *mock,
 		StorageDSN: *dsn, ArtifactsDir: *artifacts, AuthMode: *auth, Instance: *instance,
 		InsecureListen: *insecure, AllowedHostsRaw: *allowedHosts, DisableExecTools: *noExec,
-		ExecBackend: *execBackend, ExecDepsDir: *execDepsDir, ExecWorkspace: *execWorkspace,
+		ExecBackend: *execBackend, ExecDepsDir: *execDepsDir, ExecWorkspace: *execWorkspace, ExecEnvRoot: *execEnvRoot,
 		Tier: *tier, PGMaxOpen: *pgMaxOpen, PGMaxIdle: *pgMaxIdle,
 		PGConnMaxIdleSec: *pgIdleSec, PGConnMaxLifetimeSec: *pgLifetimeSec, PGQueryTimeoutSec: *pgQueryTimeoutSec,
 	}, cliSet)
@@ -92,13 +114,39 @@ func main() {
 		}
 		os.Exit(1)
 	}
+	pluginDefaults, merr := extension.MergeHostOptions(extension.Options{})
+	if merr != nil {
+		fmt.Fprintln(os.Stderr, "agent-system:", merr)
+		os.Exit(1)
+	}
+	disableExec := resolved.DisableExecTools
+	if !cliSet["disableExecTools"] {
+		disableExec = disableExec || pluginDefaults.DisableExecTools
+	}
+	execBackendResolved := resolved.ExecBackend
+	if !cliSet["execBackend"] && execBackendResolved == "" {
+		execBackendResolved = pluginDefaults.ExecBackend
+	}
+	extOpt := extension.Options{
+		Addr: resolved.Addr, DataDir: resolved.DataDir, PluginsDir: resolved.PluginsDir,
+		DisableUploadIndexing: pluginDefaults.DisableUploadIndexing,
+		DisableConvCardMirror: pluginDefaults.DisableConvCardMirror,
+		DisableExecTools:      disableExec, ExecBackend: execBackendResolved,
+	}
+	if err := extension.PrepareCompiled(&extOpt); err != nil {
+		fmt.Fprintln(os.Stderr, "agent-system:", err)
+		os.Exit(1)
+	}
 	if err := app.Run(app.Options{
 		Addr: resolved.Addr, DataDir: resolved.DataDir, PluginsDir: resolved.PluginsDir, ForceMock: resolved.Mock,
 		StorageDSN: resolved.StorageDSN, ArtifactsDir: resolved.ArtifactsDir, AuthMode: resolved.AuthMode,
 		InstanceID: resolved.Instance, InsecureListen: resolved.InsecureListen, AllowedHosts: resolved.AllowedHosts(),
-		DisableExecTools: resolved.DisableExecTools, ExecBackend: resolved.ExecBackend, ExecDepsDir: resolved.ExecDepsDir,
-		ExecWorkspace: resolved.ExecWorkspace,
-		Tier:          resolved.Tier,
+		DisableUploadIndexing: extOpt.DisableUploadIndexing,
+		DisableConvCardMirror: extOpt.DisableConvCardMirror,
+		DisableExecTools:      extOpt.DisableExecTools, ExecBackend: extOpt.ExecBackend, ExecDepsDir: resolved.ExecDepsDir,
+		ExecWorkspace: resolved.ExecWorkspace, ExecEnvRoot: resolved.ExecEnvRoot,
+		Tier:               resolved.Tier,
+		AdoptInstanceGuard: *adoptGuard,
 		PGPool: store.PoolOptions{
 			MaxOpenConn: resolved.PGMaxOpen, MaxIdleConn: resolved.PGMaxIdle,
 			ConnMaxIdleTimeSec: resolved.PGConnMaxIdleSec, ConnMaxLifetimeSec: resolved.PGConnMaxLifetimeSec,
@@ -122,6 +170,14 @@ func visited(fs *flag.FlagSet) map[string]bool {
 			name = "allowedHosts"
 		case "disable-exec-tools":
 			name = "disableExecTools"
+		case "exec-backend":
+			name = "execBackend"
+		case "exec-deps-dir":
+			name = "execDepsDir"
+		case "exec-workspace":
+			name = "execWorkspace"
+		case "exec-env-root":
+			name = "execEnvRoot"
 		case "pg-max-open":
 			name = "pgMaxOpen"
 		case "pg-max-idle":
@@ -160,6 +216,7 @@ func runConfig(args []string) int {
 	execBackend := fs.String("exec-backend", "", "")
 	execDepsDir := fs.String("exec-deps-dir", "", "")
 	execWorkspace := fs.String("exec-workspace", "", "")
+	execEnvRoot := fs.String("exec-env-root", "", "")
 	tier := fs.String("tier", "", "")
 	pgMaxOpen := fs.Int("pg-max-open", 0, "")
 	pgMaxIdle := fs.Int("pg-max-idle", 0, "")
@@ -171,7 +228,7 @@ func runConfig(args []string) int {
 		Addr: *addr, DataDir: *data, PluginsDir: *pluginsDir, Mock: *mock,
 		StorageDSN: *dsn, ArtifactsDir: *artifacts, AuthMode: *auth, Instance: *instance,
 		InsecureListen: *insecure, AllowedHostsRaw: *allowedHosts, DisableExecTools: *noExec,
-		ExecBackend: *execBackend, ExecDepsDir: *execDepsDir, ExecWorkspace: *execWorkspace,
+		ExecBackend: *execBackend, ExecDepsDir: *execDepsDir, ExecWorkspace: *execWorkspace, ExecEnvRoot: *execEnvRoot,
 		Tier: *tier, PGMaxOpen: *pgMaxOpen, PGMaxIdle: *pgMaxIdle,
 		PGConnMaxIdleSec: *pgIdleSec, PGConnMaxLifetimeSec: *pgLifetimeSec, PGQueryTimeoutSec: *pgQueryTimeoutSec,
 	}, visited(fs))
@@ -194,22 +251,47 @@ func runAPIKey(args []string) int {
 	fs := flag.NewFlagSet("apikey "+sub, flag.ExitOnError)
 	data := fs.String("data", "./data", "数据目录")
 	dsn := fs.String("dsn", "", "PostgreSQL 档 DSN（空 = 嵌入式档）")
+	dsnFile := fs.String("dsn-file", "", "0600权限的PostgreSQL DSN文件")
 	owner := fs.String("owner", "", "租户名（owner）")
 	name := fs.String("name", "default", "密钥名称")
+	outFile := fs.String("out-file", "", "把明文密钥独占写入该文件（0600）")
 	fs.Parse(args[1:])
 	if *owner == "" {
 		fmt.Fprintln(os.Stderr, "apikey: --owner 必填")
 		return 2
 	}
+	if sub != "create" && *outFile != "" {
+		fmt.Fprintln(os.Stderr, "apikey: 此子命令不生成密钥")
+		return 2
+	}
+	resolvedDSN, err := resolveAccountDSN(*dsn, *dsnFile)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "apikey:", err)
+		return 1
+	}
+	*dsn = resolvedDSN
 	switch sub {
 	case "create":
+		delivery, err := reserveCredentialOutput(*outFile, "")
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "apikey create:", err)
+			return 1
+		}
+		defer delivery.abort()
 		key, err := app.CreateAPIKey(*dsn, *data, *owner, *name)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, "apikey create:", err)
 			return 1
 		}
 		// 明文仅此一次输出；库中只存 SHA-256 摘要。
-		fmt.Println(key)
+		if delivery.file == nil {
+			fmt.Println(key) // Existing API-key CLI compatibility; owner grants require a file.
+			return 0
+		}
+		if err := delivery.deliver("api-key", *owner, key, nil); err != nil {
+			fmt.Fprintln(os.Stderr, "apikey create:", err)
+			return 1
+		}
 		return 0
 	case "list":
 		keys, err := app.ListAPIKeys(*dsn, *data, *owner)
@@ -238,12 +320,11 @@ func runAPIKey(args []string) int {
 	}
 }
 
-// deliverCredential 凭据单次交付（KTD14）：--out 时写 0600 JSON 文件，stdout 只报
-// 属主/用途/文件路径不含明文；缺省沿用 stdout 一次输出。文件含 expiresAt 便于交接。
+// deliverCredential writes only to a new private file. The secret never goes
+// to stdout or an existing path; a JSON payload may include expiresAt.
 func deliverCredential(outPath, kind, owner, plaintext string, expiresAt any) error {
 	if outPath == "" {
-		fmt.Println(plaintext)
-		return nil
+		return fmt.Errorf("protected credential delivery path required")
 	}
 	payload := map[string]any{"kind": kind, "owner": owner, "secret": plaintext}
 	if expiresAt != nil {
@@ -253,37 +334,162 @@ func deliverCredential(outPath, kind, owner, plaintext string, expiresAt any) er
 	if err != nil {
 		return err
 	}
-	if err := os.WriteFile(outPath, buf, 0o600); err != nil {
+	if err := writeExclusiveSecret(outPath, string(buf)); err != nil {
 		return err
 	}
 	fmt.Fprintf(os.Stderr, "凭据已写入 %s（0600，仅此一次生成；勿入库勿入日志）\n", outPath)
 	return nil
 }
 
-// runUser：create / reset-password / list / issue-login-key / revoke-login-key / bootstrap-admin。
-// 默认 create 无初始密码并签发激活 Key；--generate-password 兼容旧随机密码路径。
+type credentialOutput struct {
+	path    string
+	file    *os.File
+	json    bool
+	mutated bool
+}
+
+// Reserve the destination before changing the account. O_EXCL also rejects an
+// existing symlink, so an existing secret can never be overwritten.
+func reserveCredentialOutput(rawPath, jsonPath string) (*credentialOutput, error) {
+	if rawPath != "" && jsonPath != "" {
+		return nil, fmt.Errorf("--out and --out-file are mutually exclusive")
+	}
+	out := &credentialOutput{}
+	out.path, out.json = rawPath, false
+	if jsonPath != "" {
+		out.path, out.json = jsonPath, true
+	}
+	if out.path == "" {
+		return out, nil
+	}
+	f, err := os.OpenFile(out.path, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0o600)
+	if err != nil {
+		return nil, err
+	}
+	out.file = f
+	return out, nil
+}
+
+func (out *credentialOutput) abort() {
+	if out == nil || out.file == nil {
+		return
+	}
+	info, err := out.file.Stat()
+	_ = out.file.Close()
+	if out.mutated || err != nil {
+		return
+	}
+	pathInfo, pathErr := os.Stat(out.path)
+	if pathErr == nil && os.SameFile(info, pathInfo) {
+		_ = os.Remove(out.path)
+	}
+}
+
+func (out *credentialOutput) deliver(kind, owner, plaintext string, expiresAt any) error {
+	if out.file == nil {
+		return fmt.Errorf("protected credential delivery path required")
+	}
+	out.mutated = true // Keep the private recovery artifact if delivery fails after DB commit.
+	var body []byte
+	if out.json {
+		payload := map[string]any{"kind": kind, "owner": owner, "secret": plaintext}
+		if expiresAt != nil {
+			payload["expiresAt"] = expiresAt
+		}
+		var err error
+		body, err = json.MarshalIndent(payload, "", "  ")
+		if err != nil {
+			return err
+		}
+	} else {
+		body = []byte(plaintext)
+	}
+	body = append(body, '\n')
+	if _, err := out.file.Write(body); err != nil {
+		return err
+	}
+	if err := out.file.Sync(); err != nil {
+		return err
+	}
+	if err := out.file.Close(); err != nil {
+		return err
+	}
+	out.file = nil
+	fmt.Fprintf(os.Stderr, "凭据已写入 %s（0600，仅此一次生成；勿入库勿入日志）\n", out.path)
+	return nil
+}
+
+// runUser：本地 owner 账号初始化、续办和只读／撤销操作。
 func runUser(args []string) int {
 	if len(args) == 0 {
-		fmt.Fprintln(os.Stderr, "用法：agent-system user <create|reset-password|list|issue-login-key|revoke-login-key|bootstrap-admin> [flags]")
+		fmt.Fprintln(os.Stderr, "用法：agent-system user <create|initialize-account|list|revoke-login-key|bootstrap-admin> [flags]")
 		return 2
 	}
 	sub := args[0]
 	fs := flag.NewFlagSet("user "+sub, flag.ExitOnError)
 	data := fs.String("data", "./data", "数据目录")
-	dsn := fs.String("dsn", "", "PostgreSQL 档 DSN（空 = 嵌入式档）")
+	dsn := fs.String("dsn", "", "PostgreSQL 档 DSN（空 = 嵌入式档；已弃用，优先 AGENT_SYSTEM_DSN 或 --dsn-file）")
+	dsnFile := fs.String("dsn-file", "", "0600 权限的 DSN 文件")
 	owner := fs.String("owner", "", "用户名（owner）")
+	userID := fs.String("user-id", "", "待初始化账号稳定ID")
+	expectedStateVersion := fs.Int64("expected-state-version", 0, "待初始化账号状态版本")
+	expectedGeneration := fs.Int64("expected-generation", -1, "待初始化账号代数")
 	name := fs.String("name", "", "显示名")
-	password := fs.String("password", "", "密码（create 空=激活 Key；加 --generate-password 则随机）")
+	password := fs.String("password", "", "密码（已弃用；请用 --password-stdin）")
+	passwordStdin := fs.Bool("password-stdin", false, "从 stdin 读取密码")
+	outFile := fs.String("out-file", "", "把明文凭据独占写入该文件（0600）")
+	instanceID := fs.String("instance-id", "", "严格核验库内服务身份")
 	admin := fs.Bool("admin", false, "管理员")
 	role := fs.String("role", "user", "角色 user|admin")
-	openExisting := fs.Bool("open-existing", false, "只打开既有存储")
-	generatePassword := fs.Bool("generate-password", false, "create 时生成随机初始密码")
-	purpose := fs.String("purpose", "recover", "issue-login-key：activate|recover")
-	ttlMin := fs.Int("ttl-minutes", 30, "登录 Key 有效分钟（5–120）")
-	revokeAll := fs.Bool("revoke-all-credentials", false, "签发时撤销全部长期 API Key 与会话")
+	openExisting := fs.Bool("open-existing", false, "兼容旧参数；账户命令始终只打开既有存储")
+	generatePassword := fs.Bool("generate-password", false, "旧随机初始密码参数（现已拒绝）")
+	fs.String("purpose", "recover", "旧 issue-login-key 参数（现已拒绝）")
+	fs.Int("ttl-minutes", 30, "旧 issue-login-key 参数（现已拒绝）")
+	fs.Bool("revoke-all-credentials", false, "旧 issue-login-key 参数（现已拒绝）")
 	keyID := fs.String("id", "", "revoke-login-key 凭据编号")
-	out := fs.String("out", "", "凭据交付文件（0600 JSON，代替 stdout 明文；非交互推荐）")
+	out := fs.String("out", "", "凭据保护交付文件（0600 JSON）")
 	fs.Parse(args[1:])
+	if sub == "reset-password" || sub == "issue-login-key" {
+		fmt.Fprintln(os.Stderr, "RECOVERY_CONTRACT_REPLACED: use owner initialization or owner-confirmed recovery")
+		return 2 // reject before DSN/password reads, storage opens or output reservation
+	}
+	if sub == "create" && (*password != "" || *passwordStdin || *generatePassword) {
+		fmt.Fprintln(os.Stderr, "RECOVERY_CONTRACT_REPLACED: local creation uses trusted activation only")
+		return 2
+	}
+	resolvedDSN, err := resolveAccountDSN(*dsn, *dsnFile)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "user:", err)
+		return 1
+	}
+	resolvedPassword, err := resolveAccountPassword(*password, *passwordStdin)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "user:", err)
+		return 1
+	}
+	if *instanceID != "" {
+		_ = os.Setenv("AGENT_SYSTEM_INSTANCE_ID", *instanceID)
+	}
+	*dsn = resolvedDSN
+	*password = resolvedPassword
+	credentialAction := sub == "create" || sub == "initialize-account" || sub == "bootstrap-admin"
+	if credentialAction && *outFile == "" && *out == "" {
+		fmt.Fprintln(os.Stderr, "user: --out or --out-file is required for protected credential delivery")
+		return 2
+	}
+	if !credentialAction && (*outFile != "" || *out != "") {
+		fmt.Fprintln(os.Stderr, "user: 此子命令不生成凭据")
+		return 2
+	}
+	var delivery *credentialOutput
+	if credentialAction {
+		delivery, err = reserveCredentialOutput(*outFile, *out)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "user:", err)
+			return 2
+		}
+		defer delivery.abort()
+	}
 	switch sub {
 	case "create":
 		if *owner == "" {
@@ -299,41 +505,35 @@ func runUser(args []string) int {
 			fmt.Fprintf(os.Stderr, "user create: 未知角色 %q\n", *role)
 			return 2
 		}
-		pw, err := app.CreateUserAccount(*dsn, *data, *owner, *name, *password, isAdmin, *openExisting, *generatePassword)
+		pw, opID, err := app.CreateUserAccount(*dsn, *data, *owner, *name, *password, isAdmin, *openExisting, *generatePassword)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, "user create:", err)
 			return 1
 		}
-		if err := deliverCredential(*out, "login-key", *owner, pw, nil); err != nil {
+		if err := delivery.deliver("login-key", *owner, pw, nil); err != nil {
 			fmt.Fprintln(os.Stderr, "user create:", err)
 			return 1
 		}
-		if *out == "" {
-			if *password == "" && !*generatePassword {
-				fmt.Fprintln(os.Stderr, "一次性激活 Key 仅此一次输出；兑换后设置密码。")
-			} else if *password == "" {
-				fmt.Fprintln(os.Stderr, "初始密码仅此一次输出；该用户首次登录须修改密码。")
-			}
+		fmt.Fprintf(os.Stderr, "operation_id=%s\n", opID)
+		return 0
+	case "initialize-account":
+		if *userID == "" || *expectedStateVersion < 1 || *expectedGeneration < 0 {
+			fmt.Fprintln(os.Stderr, "user initialize-account: --user-id、--expected-state-version、--expected-generation 必填")
+			return 2
+		}
+		plain, targetOwner, err := app.InitializeAccount(*dsn, *data, *userID, *expectedStateVersion, *expectedGeneration)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "user initialize-account:", err)
+			return 1
+		}
+		if err := delivery.deliver("activation", targetOwner, plain, time.Now().Add(30*time.Minute).UTC()); err != nil {
+			fmt.Fprintln(os.Stderr, "user initialize-account:", err)
+			return 1
 		}
 		return 0
 	case "reset-password":
-		if *owner == "" {
-			fmt.Fprintln(os.Stderr, "user reset-password: --owner 必填")
-			return 2
-		}
-		pw, err := app.ResetUserPassword(*dsn, *data, *owner, *password, *openExisting)
-		if err != nil {
-			fmt.Fprintln(os.Stderr, "user reset-password:", err)
-			return 1
-		}
-		if err := deliverCredential(*out, "password", *owner, pw, nil); err != nil {
-			fmt.Fprintln(os.Stderr, "user reset-password:", err)
-			return 1
-		}
-		if *out == "" && *password == "" {
-			fmt.Fprintln(os.Stderr, "新密码仅此一次输出；该用户下次登录须修改密码（其余会话已吊销）。")
-		}
-		return 0
+		fmt.Fprintln(os.Stderr, "RECOVERY_CONTRACT_REPLACED")
+		return 2
 	case "list":
 		users, err := app.ListUserAccounts(*dsn, *data, *openExisting)
 		if err != nil {
@@ -344,27 +544,8 @@ func runUser(args []string) int {
 		fmt.Println(string(out))
 		return 0
 	case "issue-login-key":
-		if *owner == "" {
-			fmt.Fprintln(os.Stderr, "user issue-login-key: --owner 必填")
-			return 2
-		}
-		if *purpose != store.LoginKeyPurposeActivate && *purpose != store.LoginKeyPurposeRecover {
-			fmt.Fprintf(os.Stderr, "user issue-login-key: 无效 purpose %q\n", *purpose)
-			return 2
-		}
-		plain, err := app.IssueUserLoginKey(*dsn, *data, *owner, *purpose, *openExisting, *revokeAll, time.Duration(*ttlMin)*time.Minute)
-		if err != nil {
-			fmt.Fprintln(os.Stderr, "user issue-login-key:", err)
-			return 1
-		}
-		if err := deliverCredential(*out, "login-key", *owner, plain, time.Now().Add(time.Duration(*ttlMin)*time.Minute).UTC()); err != nil {
-			fmt.Fprintln(os.Stderr, "user issue-login-key:", err)
-			return 1
-		}
-		if *out == "" {
-			fmt.Fprintln(os.Stderr, "一次性登录 Key 仅此一次输出。")
-		}
-		return 0
+		fmt.Fprintln(os.Stderr, "RECOVERY_CONTRACT_REPLACED")
+		return 2
 	case "revoke-login-key":
 		if *keyID == "" {
 			fmt.Fprintln(os.Stderr, "user revoke-login-key: --id 必填")
@@ -386,13 +567,10 @@ func runUser(args []string) int {
 			fmt.Fprintln(os.Stderr, "user bootstrap-admin:", err)
 			return 1
 		}
-		if err := deliverCredential(*out, "bootstrap-admin", *owner, plain, time.Now().Add(30*time.Minute).UTC()); err != nil {
+		if err := delivery.deliver("bootstrap-admin", *owner, plain, time.Now().Add(30*time.Minute).UTC()); err != nil {
 			fmt.Fprintln(os.Stderr, "user bootstrap-admin:", err)
 			return 1
 		}
-		if *out == "" {
-			fmt.Fprintln(os.Stderr, "首位管理员激活 Key 仅此一次输出。")
-		}
 		return 0
 	default:
 		fmt.Fprintln(os.Stderr, "user: 未知子命令", sub)

cmd/agent-system/migrate.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"agent-system-backend/internal/app"
+)
+
+func runMigrate(args []string) int {
+	fs := flag.NewFlagSet("migrate", flag.ExitOnError)
+	data := fs.String("data", "./data", "数据目录（SQLite 档）")
+	dsn := fs.String("dsn", "", "PostgreSQL DSN（空则读 AGENT_SYSTEM_DSN）")
+	adopt := fs.Bool("adopt-instance-guard", false, "数据库被替换或锁文件被重建后，显式重写守卫")
+	_ = fs.Parse(args)
+	storage := *dsn
+	if storage == "" {
+		storage = os.Getenv("AGENT_SYSTEM_DSN")
+	}
+	if err := app.Migrate(app.Options{
+		DataDir:            *data,
+		StorageDSN:         storage,
+		AdoptInstanceGuard: *adopt,
+	}); err != nil {
+		fmt.Fprintln(os.Stderr, "agent-system:", err)
+		return 1
+	}
+	return 0
+}

cmd/agent-system/user_contract_test.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestLegacyUserCredentialCommandsStopBeforeOpeningStorage(t *testing.T) {
+	data := t.TempDir()
+	for _, args := range [][]string{
+		{"reset-password", "--data", data, "--owner", "victim", "--password", "attacker-password"},
+		{"issue-login-key", "--data", data, "--owner", "victim", "--purpose", "recover", "--revoke-all-credentials"},
+	} {
+		if code := runUser(args); code != 2 {
+			t.Fatalf("legacy command did not reject before storage: %v code=%d", args[0], code)
+		}
+	}
+	out := filepath.Join(data, "delivery.json")
+	if code := runUser([]string{"create", "--data", data, "--owner", "victim", "--password", "attacker-password", "--out", out}); code != 2 {
+		t.Fatalf("password-bearing local create accepted: %d", code)
+	}
+	if _, err := os.Stat(filepath.Join(data, "agent-system.db")); !os.IsNotExist(err) {
+		t.Fatalf("rejected commands opened/created a database: %v", err)
+	}
+	if _, err := os.Stat(out); !os.IsNotExist(err) {
+		t.Fatalf("rejected commands wrote a delivery file: %v", err)
+	}
+}
+
+func TestCredentialDeliveryCreatesExclusive0600File(t *testing.T) {
+	dir := t.TempDir()
+	out := filepath.Join(dir, "credential.json")
+	if err := os.WriteFile(out, []byte("old"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := deliverCredential(out, "activation", "alice", "secret", nil); err == nil {
+		t.Fatal("existing permissive file was overwritten")
+	}
+	bytes, err := os.ReadFile(out)
+	if err != nil || string(bytes) != "old" {
+		t.Fatalf("existing file changed: %q %v", bytes, err)
+	}
+	out = filepath.Join(dir, "new.json")
+	if err := deliverCredential(out, "activation", "alice", "secret", nil); err != nil {
+		t.Fatal(err)
+	}
+	info, err := os.Stat(out)
+	if err != nil || info.Mode().Perm() != 0o600 {
+		t.Fatalf("delivery mode: %v %v", info, err)
+	}
+	bytes, err = os.ReadFile(out)
+	if err != nil || !strings.Contains(string(bytes), `"secret": "secret"`) {
+		t.Fatalf("delivery payload: %v", err)
+	}
+}

cmd/storage-migrate/integration_test.go

@@ -9,8 +9,68 @@ import (
 	"testing"
 
 	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
 )
 
+func TestMigrateTrustedContextManifestWithoutRawScope(t *testing.T) {
+	target, cleanup := pgSchemaDSN(t)
+	defer cleanup()
+	fixture := buildFixture(t)
+	src, err := store.OpenSQLite(fixture)
+	if err != nil {
+		t.Fatal(err)
+	}
+	m := extension.ProjectContextManifest{ProjectID: "p1", AttemptID: "model-attempt", InputSHA256: "request-hash", Delivery: "attempted",
+		Included: []extension.ProjectContextManifestEntry{{SourceID: "source-a", Revision: "r1", SourceHash: "ha", InputSHA256: "input-hash"}}}
+	if err := src.AppendContextManifestWithScope("alice", "r1", m, store.ContextManifestScope{Bound: true}); err != nil {
+		t.Fatal(err)
+	}
+	m.Delivery = "responded"
+	if err := src.AppendContextManifestWithScope("alice", "r1", m, store.ContextManifestScope{Bound: true}); err != nil {
+		t.Fatal(err)
+	}
+	task, err := src.CreateWorkTask("alice", "rdm", "p1", "c1", "document", "Prepare document")
+	if err != nil {
+		t.Fatal(err)
+	}
+	stepHash := strings.Repeat("a", 64)
+	if _, err := src.DB().Exec(`INSERT INTO workflow_step_sources(run_id,step_id,owner,project_id,step_attempt_id,output_sha256,attempt_id,authorization_epoch,publication_epoch,watermark,version,created_at) VALUES(?,?,?,?,?,?,?,?,?,?,?,?)`,
+		"r1", "draft", "alice", "p1", "step-attempt", stepHash, "model-attempt", "auth-1", "pub-1", "water-1", "v1", "2026-10-14T00:00:00Z"); err != nil {
+		t.Fatal(err)
+	}
+	if err := src.Close(); err != nil {
+		t.Fatal(err)
+	}
+	snapshot := filepath.Join(t.TempDir(), "snapshot.db")
+	if err := cmdBackup([]string{"--source", fixture, "--out", snapshot}); err != nil {
+		t.Fatal(err)
+	}
+	if err := cmdMigrate([]string{"--source", snapshot, "--target", target, "--migration-id", "context-copy"}); err != nil {
+		t.Fatal(err)
+	}
+	pg, err := store.OpenPostgres(target, filepath.Join(t.TempDir(), "artifacts"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer pg.Close()
+	receipts, err := pg.ListContextManifests("alice", "r1")
+	if err != nil || len(receipts) != 2 || len(receipts[1].Included) != 1 || receipts[1].Included[0].SourceID != "source-a" {
+		t.Fatalf("content-free model receipts not copied: count=%d err=%v", len(receipts), err)
+	}
+	workScope, err := pg.WorkTaskScope("alice", "rdm", task.ID)
+	if err != nil || workScope.ProjectID != "p1" || workScope.ConversationID != "c1" {
+		t.Fatalf("trusted work task binding not copied: scope=%+v err=%v", workScope, err)
+	}
+	stepSource, err := pg.WorkflowStepSource("alice", "r1", "draft")
+	if err != nil || stepSource.StepAttemptID != "step-attempt" || stepSource.AttemptID != "model-attempt" || stepSource.ProjectID != "p1" {
+		t.Fatalf("workflow step source not copied: source=%+v err=%v", stepSource, err)
+	}
+	var rawColumns int
+	if err := pg.DB().QueryRow(`SELECT COUNT(*) FROM information_schema.columns WHERE table_schema=current_schema() AND table_name='context_manifests' AND column_name IN ('resolve_goal','resolve_target_id')`).Scan(&rawColumns); err != nil || rawColumns != 0 {
+		t.Fatalf("migrated PG schema has raw prompt columns: count=%d err=%v", rawColumns, err)
+	}
+}
+
 // U4 集成（环境门控 AGENT_PG_TEST_DSN：CI test-pg job / 本机隔离实例）：
 // 夹具 → 受管迁移 → 校验和验证 → 幂等重跑 → 断点续传 → 非空目标拒绝 →
 // 未知 owner 阻塞。每用例独立 PG schema（与 store 测试同隔离约定）。
@@ -45,6 +105,18 @@ func TestMigrateEndToEndAndIdempotent(t *testing.T) {
 	target, cleanup := pgSchemaDSN(t)
 	defer cleanup()
 	fixture := buildFixture(t)
+	src, err := sql.Open("sqlite", fixture)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer src.Close()
+	var sourcePublic, sourceStaff, sourcePrivate, sourceSecret string
+	var sourceKeyVersion int64
+	if err := src.QueryRow(`SELECT public_revision,staff_no_revision,private_revision,cursor_key_version,cursor_secret FROM account_directory_revision WHERE id=1`).Scan(
+		&sourcePublic, &sourceStaff, &sourcePrivate, &sourceKeyVersion, &sourceSecret,
+	); err != nil {
+		t.Fatal(err)
+	}
 
 	if err := cmdMigrate([]string{"--source", fixture, "--target", target, "--migration-id", "mig-e2e"}); err != nil {
 		t.Fatalf("首次迁移：%v", err)
@@ -61,6 +133,16 @@ func TestMigrateEndToEndAndIdempotent(t *testing.T) {
 	}
 	defer st.Close()
 	db := st.DB()
+	var targetPublic, targetStaff, targetPrivate, targetSecret string
+	var targetKeyVersion int64
+	if err := db.QueryRow(`SELECT public_revision,staff_no_revision,private_revision,cursor_key_version,cursor_secret FROM account_directory_revision WHERE id=1`).Scan(
+		&targetPublic, &targetStaff, &targetPrivate, &targetKeyVersion, &targetSecret,
+	); err != nil {
+		t.Fatal(err)
+	}
+	if targetPublic != sourcePublic || targetStaff != sourceStaff || targetPrivate != sourcePrivate || targetKeyVersion != sourceKeyVersion || targetSecret != sourceSecret {
+		t.Fatal("迁移后的目录版本或游标密钥与源库不一致")
+	}
 	var pinned, archived bool
 	if err := db.QueryRow(`SELECT pinned, archived FROM conversations WHERE id='c1'`).Scan(&pinned, &archived); err != nil || !pinned || archived {
 		t.Fatalf("布尔映射：pinned=%v archived=%v err=%v", pinned, archived, err)
@@ -85,6 +167,15 @@ func TestMigrateEndToEndAndIdempotent(t *testing.T) {
 	if _, err := db.Exec(`INSERT INTO command_audit (time, command_id, source, entrance, state, operation_id, conversation_id, payload, owner) VALUES ('2026-10-11T03:00:00Z','cmd-2','http','chat','done','op-2','c1','{}','alice')`); err != nil {
 		t.Fatalf("序列推进失败（复制后插入撞主键）：%v", err)
 	}
+	var linkedResource string
+	if err := db.QueryRow(`SELECT resource_id FROM project_audit_links WHERE host_audit_offset=7 AND source_id='commit-1'`).Scan(&linkedResource); err != nil || linkedResource != "doc-1" {
+		t.Fatalf("审计链接迁移丢失: resource=%q err=%v", linkedResource, err)
+	}
+	var newLinkID int64
+	if err := db.QueryRow(`INSERT INTO project_audit_links(host_audit_offset,project_id,owner,source_kind,source_id,operation_id,resource_kind,resource_id,run_id,disclosure_class,idempotency_key,created_at)
+		VALUES (7,'p1','alice','domain-commit','commit-2','op-1','document','doc-2','','metadata','outbox-2','2026-10-11T03:00:01Z') RETURNING id`).Scan(&newLinkID); err != nil || newLinkID <= 3 {
+		t.Fatalf("审计链接序列未推进: id=%d err=%v", newLinkID, err)
+	}
 	// 报告不含秘密值。
 	var report string
 	if err := db.QueryRow(`SELECT report FROM migration_control WHERE migration_id='mig-e2e'`).Scan(&report); err != nil || strings.Contains(report, "sk-secret-value") {
@@ -92,6 +183,105 @@ func TestMigrateEndToEndAndIdempotent(t *testing.T) {
 	}
 }
 
+func TestCommandAuditExclusiveCopyRollsBackAndNeverRewindsSequence(t *testing.T) {
+	target, cleanup := pgSchemaDSN(t)
+	defer cleanup()
+	fixture := buildFixture(t)
+	src, err := openSourceRO(fixture)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer src.Close()
+	st, err := store.OpenPostgres(target, filepath.Join(t.TempDir(), "artifacts"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	db := st.DB()
+	if _, err := db.Exec(controlDDL); err != nil {
+		t.Fatal(err)
+	}
+	cols, pk, err := targetColumns(db, "command_audit")
+	if err != nil {
+		t.Fatal(err)
+	}
+	bools, err := boolColumns(db, "command_audit", cols)
+	if err != nil {
+		t.Fatal(err)
+	}
+	count, checksum, err := sourceScan(src, "command_audit", cols, pk, bools)
+	if err != nil {
+		t.Fatal(err)
+	}
+	blocker, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	var existing int
+	if err := blocker.QueryRow(`SELECT COUNT(*) FROM command_audit`).Scan(&existing); err != nil {
+		t.Fatal(err)
+	}
+	timeoutDB, err := sql.Open("pgx", store.AppendPGRuntimeParam(target, "lock_timeout", "100"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := migrateCommandAudit(timeoutDB, src, "retry-audit", cols, pk, bools, count, checksum); err == nil || !strings.Contains(err.Error(), "lock timeout") {
+		t.Fatalf("exclusive copy did not fail on a held reader: %v", err)
+	}
+	timeoutDB.Close()
+	if err := blocker.Rollback(); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := migrateCommandAudit(db, src, "retry-audit", cols, pk, bools, count+1, checksum); err == nil {
+		t.Fatal("mismatched copy committed despite in-transaction target count check")
+	}
+	var rows, done int
+	if err := db.QueryRow(`SELECT COUNT(*) FROM command_audit`).Scan(&rows); err != nil || rows != 0 {
+		t.Fatalf("failed copy left rows: %d %v", rows, err)
+	}
+	if err := db.QueryRow(`SELECT COUNT(*) FROM migration_table_state WHERE table_name='command_audit'`).Scan(&done); err != nil || done != 0 {
+		t.Fatalf("failed copy recorded done: %d %v", done, err)
+	}
+	var enabled string
+	if err := db.QueryRow(`SELECT tgenabled FROM pg_trigger WHERE tgrelid='command_audit'::regclass AND tgname='project_audit_insert_guard_v1'`).Scan(&enabled); err != nil || enabled != "A" {
+		t.Fatalf("failed copy left guard disabled: %q %v", enabled, err)
+	}
+	var seq string
+	if err := db.QueryRow(`SELECT pg_get_serial_sequence('command_audit','id')`).Scan(&seq); err != nil {
+		t.Fatal(err)
+	}
+	// setval is non-transactional; an interrupted offline attempt can leave a
+	// forward gap even though its rows and trigger-state changes roll back.
+	tx, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := tx.Exec(`LOCK TABLE command_audit IN ACCESS EXCLUSIVE MODE`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := tx.Exec(`ALTER TABLE command_audit DISABLE TRIGGER project_audit_insert_guard_v1`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := tx.Exec(`SELECT setval($1::regclass,50,true)`, seq); err != nil {
+		t.Fatal(err)
+	}
+	if err := tx.Rollback(); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := migrateCommandAudit(db, src, "retry-audit", cols, pk, bools, count, checksum); err != nil {
+		t.Fatalf("retry after rollback: %v", err)
+	}
+	var last int64
+	if err := db.QueryRow(`SELECT last_value FROM ` + seq).Scan(&last); err != nil || last < 50 {
+		t.Fatalf("copy rewound sequence: last=%d err=%v", last, err)
+	}
+	var nextID int64
+	if err := db.QueryRow(`INSERT INTO command_audit(time,command_id,source,entrance,state,operation_id,conversation_id,owner,payload)
+		VALUES ('2026-10-14T00:00:00Z','after-copy','','','committed','','','alice','{}') RETURNING id`).Scan(&nextID); err != nil || nextID <= 50 {
+		t.Fatalf("post-copy ID did not advance: id=%d err=%v", nextID, err)
+	}
+}
+
 func TestMigrateResumeAfterInterrupt(t *testing.T) {
 	target, cleanup := pgSchemaDSN(t)
 	defer cleanup()

cmd/storage-migrate/main.go

@@ -242,6 +242,9 @@ func cmdBackup(args []string) error {
 		return err
 	}
 	defer db.Close()
+	if err := refuseCandidateRawContextScope(db); err != nil {
+		return err
+	}
 	if _, err := db.Exec(`VACUUM INTO ?`, *out); err != nil {
 		return fmt.Errorf("vacuum into: %w", err)
 	}
@@ -281,13 +284,14 @@ func cmdBackup(args []string) error {
 // copyOrder：按外键依赖排序的业务表全集（projects 最先，引用方在后）。
 // admission_leases 是运行态执行许可（迁移无意义），明确排除。
 var copyOrder = []string{
-	"projects", "users", "profiles", "settings", "plugins",
-	"conversations", "runs", "messages", "events", "artifacts",
-	"hitl_cards", "plans", "todos", "knowledge", "knowledge_vectors",
-	"activity_cards", "project_event_shares", "command_audit", "prompt_modules",
+	"projects", "users", "account_directory_revision", "profiles", "settings", "plugins",
+	"conversations", "runs", "messages", "project_work_outbox", "events", "artifacts",
+	"document_render_deliveries",
+	"hitl_cards", "human_decisions", "plans", "todos", "knowledge", "knowledge_vectors",
+	"activity_cards", "project_event_shares", "command_audit", "project_audit_links", "prompt_modules",
 	"sessions", "api_keys",
-	"plugin_grants", "plugin_schema", "plugin_kv", "background_tasks",
-	"memory_entries", "audit_events", "pending_confirms", "llm_usage_daily",
+	"plugin_grants", "plugin_schema", "plugin_kv", "background_tasks", "work_task_bindings",
+	"memory_entries", "audit_events", "context_manifests", "workflow_step_sources", "pending_confirms", "llm_usage_daily",
 	"secret_keys", "settings_snapshots", "regen_pending", "context_entries",
 	"user_commands", "pending_notices", "recovery_holds",
 	"surfaces", "surface_revisions", "surface_actions", "plugin_activation",
@@ -297,6 +301,11 @@ var copyOrder = []string{
 	"agent_system_identity",
 	"account_events",
 	"redeem_attempts",
+	"recovery_proposals", "recovery_proposal_proofs",
+	// v35 分层 Python 环境（无外键；申请与会话绑定要随库迁走）
+	"exec_env_requests", "exec_env_bindings",
+	// U8：活动服务锁的库内标记（无外键；迁移须保留以免目标库丢掉锁根）
+	"instance_guard",
 }
 
 const controlDDL = `
@@ -336,6 +345,9 @@ func cmdMigrate(args []string) error {
 		return err
 	}
 	defer src.Close()
+	if err := refuseCandidateRawContextScope(src); err != nil {
+		return err
+	}
 	snapID, _, err := fileSHA256(*source)
 	if err != nil {
 		return err
@@ -344,6 +356,9 @@ func cmdMigrate(args []string) error {
 	if err != nil {
 		return err
 	}
+	if err := validateSourceMigrationLedger(src); err != nil {
+		return err
+	}
 
 	// 目标：先用 store 同款迁移器建 schema/扩展（OpenPostgres 会跑迁移与
 	// 未知版本门禁），再落控制表。DSN 不回显、不入报告。
@@ -410,6 +425,57 @@ func cmdMigrate(args []string) error {
 	return writeReport(rep, *out)
 }
 
+func validateSourceMigrationLedger(src *sql.DB) error {
+	rows, err := src.Query(`SELECT version,name FROM schema_migrations`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var version int
+		var name string
+		if err := rows.Scan(&version, &name); err != nil {
+			return err
+		}
+		if err := store.ValidateMigrationIdentity(version, name); err != nil {
+			return fmt.Errorf("source %w", err)
+		}
+	}
+	return rows.Err()
+}
+
+// Candidate context-scope v35 may contain full model prompts in private columns.
+// Never copy or back up such a source implicitly; it must be migrated and
+// reviewed in an isolated Backend store before this tool accepts it.
+func refuseCandidateRawContextScope(db *sql.DB) error {
+	if !sqliteHasTable(db, "context_manifests") {
+		return nil
+	}
+	var columns int
+	if err := db.QueryRow(`SELECT COUNT(*) FROM pragma_table_info('context_manifests') WHERE name IN ('resolve_goal','resolve_target_id')`).Scan(&columns); err != nil {
+		return err
+	}
+	if columns > 0 {
+		return fmt.Errorf("candidate context scope text columns remain; isolate and scrub source before backup or migration")
+	}
+	var version int
+	if sqliteHasTable(db, "schema_migrations") {
+		if err := db.QueryRow(`SELECT COALESCE(MAX(version),0) FROM schema_migrations`).Scan(&version); err != nil {
+			return err
+		}
+	}
+	if version >= 35 {
+		if !sqliteHasTable(db, "context_scope_scrub_state") {
+			return fmt.Errorf("candidate context physical scrub marker missing; isolate and scrub source before backup or migration")
+		}
+		var pending int
+		if err := db.QueryRow(`SELECT pending FROM context_scope_scrub_state WHERE id=1`).Scan(&pending); err != nil || pending != 0 {
+			return fmt.Errorf("candidate context physical scrub pending or unverified; isolate and scrub source before backup or migration")
+		}
+	}
+	return nil
+}
+
 // guardIdentity：目标非空且身份不同即拒绝（R7：不覆盖他人数据）。
 //   - 存在其他 migration_id 的完成记录 → 拒绝；
 //   - 同 migration_id 但 source_snapshot_id 不同（换了快照续传）→ 拒绝；
@@ -450,6 +516,11 @@ func guardIdentity(db *sql.DB, migrationID, snapID string, srcVersion int) error
 func businessRows(db *sql.DB) (int64, error) {
 	var total int64
 	for _, t := range copyOrder {
+		// Schema setup seeds this singleton before a migration starts. It is
+		// replaced from the source during copying and is not target business data.
+		if t == "account_directory_revision" {
+			continue
+		}
 		var n int64
 		if err := db.QueryRow(`SELECT COUNT(*) FROM "` + t + `"`).Scan(&n); err != nil {
 			if strings.Contains(err.Error(), "does not exist") {
@@ -508,9 +579,18 @@ func migrateTable(db *sql.DB, src *sql.DB, migrationID, table string) (map[strin
 		if countNow != srcCount || sumNow != srcChecksum {
 			return nil, fmt.Errorf("源与登记不符（疑似换快照）：count %d/%d checksum %s…/%s…", countNow, srcCount, sumNow[:12], srcChecksum[:12])
 		}
+		if table == "command_audit" {
+			var guarded bool
+			if err := db.QueryRow(`SELECT project_audit_cutoff_safe('command_audit'::regclass) AND project_audit_writers_guarded('command_audit'::regclass)`).Scan(&guarded); err != nil || !guarded {
+				return nil, fmt.Errorf("command_audit idempotent guard is unsafe: safe=%v err=%v", guarded, err)
+			}
+		}
 		entry := map[string]any{"table": table, "source_count": countNow, "target_count": dstCountStored, "checksum": sumNow, "state": "done(idempotent)"}
 		return entry, nil
 	}
+	if table == "command_audit" {
+		return migrateCommandAudit(db, src, migrationID, cols, pk, bools, countNow, sumNow)
+	}
 	if err := copyRows(db, src, table, cols); err != nil {
 		return nil, err
 	}
@@ -663,7 +743,11 @@ func sourceScan(src *sql.DB, table string, cols, pk []string, bools map[string]b
 	return scanChecksum(rows, cols, bools)
 }
 
-func targetScan(db *sql.DB, table string, cols, pk []string, bools map[string]bool) (int64, string, error) {
+type rowsQuerier interface {
+	Query(string, ...any) (*sql.Rows, error)
+}
+
+func targetScan(db rowsQuerier, table string, cols, pk []string, bools map[string]bool) (int64, string, error) {
 	rows, err := db.Query(`SELECT ` + quoteJoin(cols, `"`) + ` FROM "` + table + `" ORDER BY ` + quoteJoin(pk, `"`))
 	if err != nil {
 		return 0, "", err
@@ -686,6 +770,18 @@ func copyRows(db *sql.DB, src *sql.DB, table string, cols []string) error {
 	if err != nil {
 		return err
 	}
+	tx, err := db.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	if err := copyRowsInTx(tx, src, table, cols, bools); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+func copyRowsInTx(tx *sql.Tx, src *sql.DB, table string, cols []string, bools map[string]bool) error {
 	colList := quoteJoin(cols, `"`)
 	ph := make([]string, len(cols))
 	for i := range ph {
@@ -702,11 +798,14 @@ func copyRows(db *sql.DB, src *sql.DB, table string, cols []string) error {
 	for i := range vals {
 		ptrs[i] = &vals[i]
 	}
-	tx, err := db.Begin()
-	if err != nil {
-		return err
+	// The destination migrator creates a fresh singleton directory revision at
+	// schema startup. Replace it with the source's opaque revision so existing
+	// cursors/visible-change history remain tied to the migrated account data.
+	if table == "account_directory_revision" {
+		if _, err := tx.Exec(`DELETE FROM account_directory_revision`); err != nil {
+			return err
+		}
 	}
-	defer tx.Rollback()
 	stmt, err := tx.Prepare(fmt.Sprintf(`INSERT INTO "%s" (%s) VALUES (%s) ON CONFLICT DO NOTHING`, table, colList, placeholders))
 	if err != nil {
 		return err
@@ -734,7 +833,76 @@ func copyRows(db *sql.DB, src *sql.DB, table string, cols []string) error {
 	if err := srcRows.Err(); err != nil {
 		return err
 	}
-	return tx.Commit()
+	return nil
+}
+
+// command_audit alone needs an offline transaction: explicit source IDs do not
+// pass the online monotone guard, and disabling it must never become visible
+// separately from the copied rows, sequence advance, or done marker.
+func migrateCommandAudit(db *sql.DB, src *sql.DB, migrationID string, cols, pk []string, bools map[string]bool, sourceCount int64, sourceChecksum string) (map[string]any, error) {
+	tx, err := db.Begin()
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback()
+	if _, err := tx.Exec(`LOCK TABLE command_audit IN ACCESS EXCLUSIVE MODE`); err != nil {
+		return nil, err
+	}
+	if _, err := tx.Exec(`ALTER TABLE command_audit DISABLE TRIGGER project_audit_insert_guard_v1`); err != nil {
+		return nil, err
+	}
+	if err := copyRowsInTx(tx, src, "command_audit", cols, bools); err != nil {
+		return nil, err
+	}
+	targetCount, targetChecksum, err := targetScan(tx, "command_audit", cols, pk, bools)
+	if err != nil {
+		return nil, err
+	}
+	if targetCount != sourceCount || targetChecksum != sourceChecksum {
+		return nil, fmt.Errorf("command_audit copy mismatch: count %d/%d checksum %s/%s", targetCount, sourceCount, targetChecksum, sourceChecksum)
+	}
+	if err := advanceCommandAuditSequence(tx); err != nil {
+		return nil, err
+	}
+	if _, err := tx.Exec(`ALTER TABLE command_audit ENABLE ALWAYS TRIGGER project_audit_insert_guard_v1`); err != nil {
+		return nil, err
+	}
+	var guarded bool
+	if err := tx.QueryRow(`SELECT project_audit_cutoff_safe('command_audit'::regclass) AND project_audit_writers_guarded('command_audit'::regclass)`).Scan(&guarded); err != nil || !guarded {
+		return nil, fmt.Errorf("command_audit guard not restored: safe=%v err=%v", guarded, err)
+	}
+	if _, err := tx.Exec(`INSERT INTO migration_table_state (migration_id, table_name, source_count, target_count, checksum, state, finished_at)
+		VALUES ($1,'command_audit',$2,$3,$4,'done',$5)
+		ON CONFLICT(migration_id, table_name) DO UPDATE SET source_count=excluded.source_count, target_count=excluded.target_count, checksum=excluded.checksum, state=excluded.state, finished_at=excluded.finished_at`,
+		migrationID, sourceCount, targetCount, sourceChecksum, nowISO()); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, err
+	}
+	return map[string]any{"table": "command_audit", "source_count": sourceCount, "target_count": targetCount, "checksum": sourceChecksum, "state": "done"}, nil
+}
+
+func advanceCommandAuditSequence(tx *sql.Tx) error {
+	var seq string
+	if err := tx.QueryRow(`SELECT pg_get_serial_sequence('command_audit','id')`).Scan(&seq); err != nil || seq == "" {
+		return fmt.Errorf("command_audit sequence missing: %v", err)
+	}
+	var last int64
+	var called bool
+	if err := tx.QueryRow(fmt.Sprintf(`SELECT last_value,is_called FROM %s`, seq)).Scan(&last, &called); err != nil {
+		return err
+	}
+	var maxID sql.NullInt64
+	if err := tx.QueryRow(`SELECT MAX(id) FROM command_audit`).Scan(&maxID); err != nil {
+		return err
+	}
+	if maxID.Valid && (maxID.Int64 > last || (maxID.Int64 == last && !called)) {
+		if _, err := tx.Exec(`SELECT setval($1::regclass,$2,true)`, seq, maxID.Int64); err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
 func sqliteBool(v any) bool {
@@ -752,30 +920,34 @@ func sqliteBool(v any) bool {
 // 后续应用插入会撞主键）。无序列表为空操作。
 func advanceSequences(db *sql.DB, table string) error {
 	rows, err := db.Query(`
-		SELECT pg_get_serial_sequence($1, column_name)
+		SELECT column_name, pg_get_serial_sequence(format('%I.%I',table_schema,table_name), column_name)
 		FROM information_schema.columns
-		WHERE table_schema=current_schema() AND table_name=$1
-		  AND (column_default LIKE 'nextval%' OR is_identity='YES')`, table)
+		WHERE table_schema=current_schema() AND table_name=$1`, table)
 	if err != nil {
 		return err
 	}
 	defer rows.Close()
-	var seqs []string
+	var seqs []struct{ name, column string }
 	for rows.Next() {
-		var s any
-		if err := rows.Scan(&s); err != nil {
+		var column string
+		var seq sql.NullString
+		if err := rows.Scan(&column, &seq); err != nil {
 			return err
 		}
-		if s != nil {
-			seqs = append(seqs, s.(string))
+		if seq.Valid {
+			seqs = append(seqs, struct{ name, column string }{seq.String, column})
 		}
 	}
 	if err := rows.Err(); err != nil {
 		return err
 	}
 	for _, s := range seqs {
-		if _, err := db.Exec(fmt.Sprintf(`SELECT setval('%s', COALESCE((SELECT MAX(id) FROM "%s"), 1))`, s, table)); err != nil {
-			return fmt.Errorf("setval %s: %w", s, err)
+		// Sequence ownership remains authoritative when a column's default is a
+		// guarded function rather than a literal nextval expression.
+		column := `"` + strings.ReplaceAll(s.column, `"`, `""`) + `"`
+		tableName := `"` + strings.ReplaceAll(table, `"`, `""`) + `"`
+		if _, err := db.Exec(fmt.Sprintf(`SELECT setval($1::regclass, COALESCE((SELECT MAX(%s) FROM %s), 1))`, column, tableName), s.name); err != nil {
+			return fmt.Errorf("setval %s (%s): %w", s.name, s.column, err)
 		}
 	}
 	return nil
@@ -784,7 +956,9 @@ func advanceSequences(db *sql.DB, table string) error {
 // checkOwners：业务行引用的 owner 必须存在于 users（单租户默认 ”/'local'
 // 除外）。未知 owner 阻塞迁移（U4/R7：不静默带过未知归属）。
 func checkOwners(db *sql.DB, src *sql.DB) error {
-	ownerTables := []string{"projects", "conversations", "runs", "artifacts", "knowledge", "hitl_cards", "profiles", "activity_cards", "project_event_shares", "command_audit"}
+	ownerTables := []string{"projects", "conversations", "runs", "artifacts", "knowledge", "hitl_cards", "profiles", "activity_cards",
+		"project_event_shares", "command_audit", "project_audit_links", "project_work_outbox", "work_task_bindings", "context_manifests", "workflow_step_sources",
+		"sessions", "api_keys", "login_keys", "account_events", "recovery_proposals"}
 	for _, t := range ownerTables {
 		if !sqliteHasTable(src, t) {
 			continue

cmd/storage-migrate/main_test.go

@@ -1,7 +1,10 @@
 package main
 
 import (
+	"bytes"
+	"database/sql"
 	"encoding/json"
+	"os"
 	"path/filepath"
 	"strings"
 	"testing"
@@ -27,6 +30,23 @@ func buildFixture(t *testing.T) string {
 	return path
 }
 
+func TestMigrateRejectsSourceLedgerNameCollisionBeforeTargetOpen(t *testing.T) {
+	source := buildFixture(t)
+	db, err := sql.Open("sqlite", source)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`UPDATE schema_migrations SET name='work_task_bindings' WHERE version=35`); err != nil {
+		db.Close()
+		t.Fatal(err)
+	}
+	db.Close()
+	err = cmdMigrate([]string{"--source", source, "--target", "invalid://target", "--migration-id", "name-collision"})
+	if err == nil || !strings.Contains(err.Error(), "source migration identity mismatch") || !strings.Contains(err.Error(), "legacy feature migration numbering") {
+		t.Fatalf("candidate branch ledger was not rejected before opening target: %v", err)
+	}
+}
+
 func seedEdgeRows(t *testing.T, st *store.Store) {
 	t.Helper()
 	// users（含 is_admin/must_change 布尔）与单租户默认身份。
@@ -70,8 +90,10 @@ func seedEdgeRows(t *testing.T, st *store.Store) {
 	mustExec(t, st, `INSERT INTO activity_cards (id, project_id, conversation_id, ref, owner, payload, status, pinned, created_at, updated_at, version) VALUES
 		('ac1', 'p1', 'c1', '', 'alice', '{"title":"卡"}', 'active', 1, '2026-10-11T01:00:00Z', '2026-10-11T01:00:00Z', 2)`)
 	// 命令审计（SERIAL 主键：显式 id 插入）。
-	mustExec(t, st, `INSERT INTO command_audit (id, time, command_id, source, entrance, state, operation_id, conversation_id, payload, owner) VALUES
-		(7, '2026-10-11T01:00:00Z', 'cmd-1', 'http', 'chat', 'done', 'op-1', 'c1', '{"actor":"alice"}', 'alice')`)
+	mustExec(t, st, `INSERT INTO command_audit (id, time, command_id, source, entrance, state, operation_id, conversation_id, payload, owner, project_id, actor_name) VALUES
+		(7, '2026-10-11T01:00:00Z', 'cmd-1', 'http', 'chat', 'committed', 'op-1', 'c1', '{"actor":"alice","commandId":"cmd-1","operationId":"op-1","state":"committed","conversationId":"c1"}', 'alice', 'p1', '爱丽丝')`)
+	mustExec(t, st, `INSERT INTO project_audit_links (id,host_audit_offset,project_id,owner,source_kind,source_id,operation_id,resource_kind,resource_id,run_id,disclosure_class,idempotency_key,created_at) VALUES
+		(3,7,'p1','alice','domain-commit','commit-1','op-1','document','doc-1','','metadata','outbox-1','2026-10-11T01:00:01Z')`)
 	// 设置（'' 默认租户 scope）。
 	mustExec(t, st, `INSERT INTO settings (owner, scope, "values") VALUES ('', 'runtime', '{"rateLimitPerMin":0}')`)
 	// 秘密字段（值不外泄：迁移按行复制，报告无正文）。
@@ -170,7 +192,8 @@ func TestCopyOrderCoversAllFixtureTables(t *testing.T) {
 	for _, t := range copyOrder {
 		known[t] = true
 	}
-	known["schema_migrations"] = true // 迁移器管理，不随迁
+	known["schema_migrations"] = true         // 迁移器管理，不随迁
+	known["context_scope_scrub_state"] = true // SQLite 候选原文物理清理状态，不随迁
 	// 运行态表不随迁：执行许可是进程瞬态；执行租约与跨实例命令属当前
 	// 实例的调度现场（接管语义在 U5 内由 lease/fencing 处理，不复制历史）。
 	for _, rt := range []string{"admission_leases", "conversation_executions", "run_commands"} {
@@ -195,3 +218,108 @@ func TestCopyOrderCoversAllFixtureTables(t *testing.T) {
 		t.Fatalf("copyOrder 漏表（新表加入 schema 后须同步工具清单）：%v", missing)
 	}
 }
+
+func TestBackupAndMigrateRejectCandidateRawContextScope(t *testing.T) {
+	path := buildFixture(t)
+	db, err := sql.Open("sqlite", path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`ALTER TABLE context_manifests ADD COLUMN resolve_goal TEXT NOT NULL DEFAULT ''`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`ALTER TABLE context_manifests ADD COLUMN resolve_target_id TEXT NOT NULL DEFAULT ''`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`DELETE FROM schema_migrations WHERE version=41`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`INSERT INTO context_manifests(id,attempt_id,owner,target_id,project_id,input_sha256,delivery,manifest_json,created_at,scope_bound,resolve_goal,resolve_target_id) VALUES('candidate-ctx','candidate-attempt','alice','r1','p1','input-hash','attempted','{}','2026-10-14T00:00:00Z',1,'OLD_RESTRICTED_BODY','doc-private')`); err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Close(); err != nil {
+		t.Fatal(err)
+	}
+	out := filepath.Join(t.TempDir(), "unsafe-backup.db")
+	if err := cmdBackup([]string{"--source", path, "--out", out}); err == nil || !strings.Contains(err.Error(), "candidate context scope text") {
+		t.Fatalf("backup accepted candidate v38 raw scope: %v", err)
+	}
+	if _, err := os.Stat(out); !os.IsNotExist(err) {
+		t.Fatalf("rejected backup still created output: %v", err)
+	}
+	if err := cmdMigrate([]string{"--source", path, "--target", "postgres://invalid", "--migration-id", "unsafe"}); err == nil || !strings.Contains(err.Error(), "candidate context scope text") {
+		t.Fatalf("migration accepted candidate v38 raw source: %v", err)
+	}
+	scrubbed, err := store.OpenSQLite(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := scrubbed.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if err := cmdBackup([]string{"--source", path, "--out", out}); err != nil {
+		t.Fatalf("scrubbed source rejected: %v", err)
+	}
+	data, err := os.ReadFile(out)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if bytes.Contains(data, []byte("OLD_RESTRICTED_BODY")) {
+		t.Fatal("backup retained candidate raw scope body")
+	}
+}
+
+func TestBackupAndMigrateRejectPendingOrMissingContextScrubMarker(t *testing.T) {
+	path := buildFixture(t)
+	db, err := sql.Open("sqlite", path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, query := range []string{
+		`CREATE TABLE IF NOT EXISTS context_scope_scrub_state(id INTEGER PRIMARY KEY,pending INTEGER NOT NULL)`,
+		`INSERT OR REPLACE INTO context_scope_scrub_state(id,pending) VALUES(1,1)`,
+	} {
+		if _, err := db.Exec(query); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := db.Close(); err != nil {
+		t.Fatal(err)
+	}
+	assertRejected := func(name string) {
+		t.Helper()
+		out := filepath.Join(t.TempDir(), name+".db")
+		if err := cmdBackup([]string{"--source", path, "--out", out}); err == nil {
+			t.Fatalf("backup accepted %s context scrub state", name)
+		}
+		if _, err := os.Stat(out); !os.IsNotExist(err) {
+			t.Fatalf("rejected %s backup created output: %v", name, err)
+		}
+		if err := cmdMigrate([]string{"--source", path, "--target", "postgres://invalid", "--migration-id", name}); err == nil {
+			t.Fatalf("migration accepted %s context scrub state", name)
+		}
+	}
+	assertRejected("pending")
+	db, err = sql.Open("sqlite", path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`DROP TABLE context_scope_scrub_state`); err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Close(); err != nil {
+		t.Fatal(err)
+	}
+	assertRejected("missing")
+	db, err = sql.Open("sqlite", path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.Exec(`DELETE FROM schema_migrations WHERE version=41`); err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Close(); err != nil {
+		t.Fatal(err)
+	}
+	assertRejected("v38-missing")
+}

docs/iam-u3-account-write-fence-inventory.md

@@ -0,0 +1,120 @@
+# IAM U3 A1: account write fence inventory
+
+Status: stage 4–5 implementation inventory; the fixed candidate is the commit containing this file, and stage 6 human review remains pending. The route table records the **4053c4d baseline finding** and the intended final sink; its `Now` column is historical, not a claim about the amended candidate. Scope follows the approved Documents A1–A4 amendment `fb3a8214df963697ebd745ad11eb852ed9444fe3` and approved delegated-actor amendment `5783940e4c434102cbca8c22bd282d87b28fa840`.
+
+The 66 non-GET `/api` registrations were enumerated from `internal/server/server.go`. Paths below omit `/api`. `A` means `s.owner(r)` (auth-off: implicit `store.OwnerDefault`); `B` means body owner, `K` redeemed-key owner, `S` current password-session owner. Target resource owner never substitutes for actor. In the historical `Now` column, `T` means the baseline already had a final Store check; `M` means a Backend DB write lacked one; `E` means an external or process-local effect; `—` means no business mutation or permitted credential cleanup. `D` means a short Store transaction with actor account lock and enabled read **before** resource/scope/conversation locks; `F` means stage immutable bytes, then `D` for the visible DB reference; `X` means last effective-state check before external action plus cancellation; `C` means `D` at each command handler's actual sink; `P` means `D` for Backend projection and `X` at the separate RDM callback. `Vnn` identifies the route for traceability; verification uses representative concurrency cases and complete source-to-sink review, rather than one duplicate test per route.
+
+| # | Route → handler (source line) | Actor | Final sink | Now | Required fence | Verify |
+|---:|---|---|---|---|---|---|
+| 01 | `POST /auth/login` → `login` (`accounts.go:148`) | B | `CreateSessionVerified` | T | retain account/version transaction check | V01 |
+| 02 | `POST /auth/login-key/redeem` → `redeemLoginKey` (`accounts.go:106`) | K | `RedeemLoginKey`; failed-attempt security counter | T | retain account/grant transaction check | V02 |
+| 03 | `POST /auth/recovery-grants/redeem` → `redeemLoginKey` (`accounts.go:106`) | K | same as 02 | T | same as 02 | V03 |
+| 04 | `POST /auth/logout` → `logout` (`accounts.go:202`) | A | `DeleteSession` credential cleanup | — | permit cleanup after disable | V04 |
+| 05 | `POST /auth/password` → `changePassword` (`accounts.go:214`) | S | checked setup/forced/active password Store transaction | T | retain session/account recheck | V05 |
+| 06 | `POST /admin/users` → `createAdminUser` (`accounts.go:321`) | A | `CreatePendingAccount` | T | retain actor enabled/admin transaction check | V06 |
+| 07 | `PATCH /me/profile` → `patchMeProfile` (`accounts.go:394`) | S | `PatchAccountProfile` | T | retain actor/target transaction check | V07 |
+| 08 | `PATCH /admin/users/{userId}/profile` → `patchAdminAccountProfile` (`accounts.go:419`) | A | `PatchAccountProfile` | T | retain actor/target transaction check | V08 |
+| 09 | `PUT /admin/users/{userId}/state` → `setAdminAccountState` (`accounts.go:444`) | A | `SetAccountEnabled` | T | retain shared account lock and in-tx actor check | V09 |
+| 10 | `POST /admin/users/{userId}/recovery-proposals` → `createAdminRecoveryProposal` (`recovery.go:7`) | A | `CreateRecoveryProposal` | T | retain actor/target transaction check | V10 |
+| 11 | `DELETE /admin/users/{userId}/recovery-proposals/{id}` → `revokeAdminRecoveryProposal` (`recovery.go:47`) | A | `RevokeRecoveryProposal` | T | retain actor/target transaction check | V11 |
+| 12 | `POST /auth/recovery-proposals/{id}/confirm` → `confirmRecoveryProposal` (`recovery.go:81`) | S | `ConfirmRecoveryProposal` | T | retain owner/session proof in transaction | V12 |
+| 13 | `POST /auth/recovery-proposals/{id}/rotate-grant` → `rotateRecoveryGrant` (`recovery.go:105`) | S | `RotateRecoveryGrant` | T | retain owner/session proof in transaction | V13 |
+| 14 | `POST /admin/users/{owner}/password` → `resetAdminUserPassword` (`accounts.go:468`) | A | 410 response only | — | no business sink | V14 |
+| 15 | `POST /admin/users/{owner}/login-keys` → `issueAdminLoginKey` (`accounts.go:478`) | A | 410 response only | — | no business sink | V15 |
+| 16 | `DELETE /admin/users/{owner}/login-keys/{id}` → `revokeAdminLoginKey` (`accounts.go:494`) | A | `RevokeLoginKeyCascade` | M | D: lock/recheck admin actor too, then target/grant | V16 |
+| 17 | `POST /projects` → `createProject` (`server.go:713`) | A | `CreateProject` or RDM `Create` + Host projection | M/E | P | V17 |
+| 18 | `PATCH /projects/{id}` → `patchProject` (`server.go:734`) | A | RDM `Rename` or `RenameProject`; `UpdateProjectSettings` | M/E | P; D for every settings write | V18 |
+| 19 | `DELETE /projects/{id}` → `deleteProject` (`server.go:812`) | A | RDM `Archive` or `DeleteProject` | M/E | P | V19 |
+| 20 | `POST /projects/{id}/conversations` → `createConversation` (`server.go:875`) | A | `CreateConversation[InProject]`; RDM `Work` precheck | M | D; keep domain work check | V20 |
+| 21 | `PATCH /conversations/{id}` → `patchConversation` (`server.go:914`) | A | update, permission, note, flags: separate Store writes | M | D at each final write | V21 |
+| 22 | `DELETE /conversations/{id}` → `deleteConversation` (`server.go:950`) | A | `DeleteConversation` | M | D | V22 |
+| 23 | `POST /conversations/{id}/messages` → `postMessage` (`server.go:956`) | A | message, run, message-run link; optional Bus dispatch | M/E | D per write; C for command; actor lock before conversation lock | V23 |
+| 24 | `POST /conversations/{id}/rewind` → `rewindFiles` (`rewind.go:27`) | A | checkpoint files, then `AppendMessage` | M/E | X for rewind, D for message | V24 |
+| 25 | `POST /conversations/{id}/regenerate` → `regenerateMessage` (`borrow.go:159`) | A | message flags/exclusion, regen marker, rewind files, new run | M/E | D per write, X for rewind | V25 |
+| 26 | `POST /messages/{id}/exclude` → `excludeMessage` (`borrow.go:122`) | A | `ExcludeRunGroup(messageID)` | M | D; derive conversation owner in transaction | V26 |
+| 27 | `POST /messages/{id}/variant` → `selectVariant` (`borrow.go:146`) | A | `SelectVariant(messageID)` | M | D; derive conversation owner in transaction | V27 |
+| 28 | `POST /secrets` → `createSecret` (`borrow.go:21`) | A | `AddSecret` | M | D | V28 |
+| 29 | `POST /secrets/{id}/activate` → `activateSecret` (`borrow.go:39`) | A | `ActivateSecret` | M | D | V29 |
+| 30 | `PATCH /secrets/{id}` → `renameSecret` (`borrow.go:43`) | A | `RenameSecret` | M | D | V30 |
+| 31 | `DELETE /secrets/{id}` → `deleteSecret` (`borrow.go:54`) | A | `DeleteSecret` | M | D | V31 |
+| 32 | `POST /context-entries` → `saveContextEntry` (`borrow.go:64`) | A | `SaveContextEntry` | M | D | V32 |
+| 33 | `DELETE /context-entries/{id}` → `deleteContextEntry` (`borrow.go:78`) | A | `DeleteContextEntry` | M | D | V33 |
+| 34 | `POST /prompt-commands` → `saveUserPromptCommand` (`borrow.go:87`) | A | `SaveUserCommand`, then process Bus register | M/E | D; X before Bus mutation | V34 |
+| 35 | `DELETE /prompt-commands/{id}` → `deleteUserPromptCommand` (`borrow.go:102`) | A | `DeleteUserCommand`, then Bus unregister | M/E | D; X before Bus mutation | V35 |
+| 36 | `POST /runs/{id}/cancel` → `cancelRun` (`server.go:1278`) | A | PG `EnqueueCommand` or local cancel handle | M/E | D for enqueue with in-tx run owner; X locally | V36 |
+| 37 | `POST /hitl/{id}/resolve` → `resolveHITL` (`server.go:1314`) | A | local HITL/card/event writes or PG `EnqueueCommand` | M | D at each Store sink, including queue | V37 |
+| 38 | `POST /cards/{id}/actions/{actionId}` → `cardAction` (`server.go:1401`) | A | Cards action or Bus confirm, then receipt message | M/E | D for card/message; C for confirmed handler | V38 |
+| 39 | `POST /cards/{id}/pin` → `cardPin` (`server.go:1453`) | A | card version write | M | D | V39 |
+| 40 | `POST /cards/{id}/dismiss` → `cardDismiss` (`server.go:1462`) | A | card version/event write | M | D | V40 |
+| 41 | `POST /cards/{id}/to_project` → `cardToProject` (`server.go:1386`) | A | project card copy and original dismissal | M | D at both writes | V41 |
+| 42 | `POST /projects/{id}/uploads` → `upload` (`server.go:1469`) | A | Blob + artifact row, card, knowledge/vector index | M/E | F; D at later card/index writes | V42 |
+| 43 | `PUT /artifacts/{id}/content` → `putArtifactContent` (`server.go:1651`) | A | **in-place Blob overwrite before SQL UPDATE** | M/E | F using new immutable blob ref, guarded DB pointer swap | V43 |
+| 44 | `DELETE /artifacts/{id}` → `deleteArtifact` (`server.go:1656`) | A | metadata, index/vector rows, Blob deletion | M/E | D for visible rows; X for post-commit GC | V44 |
+| 45 | `POST /profiles` → `saveProfile` (`server.go:1667`) | A | profile Store row | M | D | V45 |
+| 46 | `DELETE /profiles/{id}` → `deleteProfile` (`server.go:1683`) | A | profile Store row | M | D | V46 |
+| 47 | `POST /prompts` → `savePromptModule` (`server.go:2023`) | A | prompt Store row | M | D | V47 |
+| 48 | `DELETE /prompts/{id}` → `deletePromptModule` (`server.go:2044`) | A | prompt Store row | M | D | V48 |
+| 49 | `PUT /settings/user` → `putSettingsUser` (`server.go:1717`) | A | settings transaction, then separate snapshot row | M | D for settings and snapshot | V49 |
+| 50 | `PUT /settings/project/{id}` → `putSettingsProject` (`server.go:1726`) | A | settings transaction, then separate snapshot row | M | D for settings and snapshot | V50 |
+| 51 | `PUT /settings/system` → `putSettingsSystem` (`server.go:1782`) | A | system settings and snapshot under synthetic owner | M | D with **request actor**, not `OwnerSystemRow` | V51 |
+| 52 | `POST /tools` → `createUserTool` (`server.go:1815`) | A | process Registry register; future HTTP tool execution | E | X for registration and each tool execution | V52 |
+| 53 | `DELETE /tools/{name}` → `deleteUserTool` (`server.go:1834`) | A | process Registry unregister | E | X | V53 |
+| 54 | `POST /plugins/{id}/enabled` → `setPluginEnabled` (`platform_api.go:132`) | A | `SetPluginEnabled` upsert | M | D | V54 |
+| 55 | `POST /plugins/{id}/activation` → `setSurfaceActivation` (`platform_api.go:251`) | A | activation transaction, separate audit row | M | D for both writes | V55 |
+| 56 | `POST /surfaces` → `submitSurface` (`platform_api.go:194`) | A | snapshot transaction, then event/pending row | M | D for snapshot/event writes | V56 |
+| 57 | `POST /surfaces/{id}/actions` → `submitSurfaceAction` (`platform_api.go:271`) | A | action insert, Bus dispatch, action-state update | M/E | D for both action writes; C for dispatch | V57 |
+| 58 | `POST /plugins/reload` → `reloadPlugins` (`server.go:1908`) | A | process registry/sidecar changes and `UpsertPlugin` | M/E | X for process changes; D for DB writes | V58 |
+| 59 | `POST /commands/{id}` → `execCommand` (`server.go:1211`) | A | Bus audit/card/pending or arbitrary command handler/RDM | M/E | C, X for external handler | V59 |
+| 60 | `POST /projects/{id}/knowledge` → `addKnowledge` (`server.go:2055`) | A | `AddKnowledge` batch transaction | M | D; in-tx project/owner check | V60 |
+| 61 | `POST /tasks` → `createBackgroundTask` (`platform_api.go:16`) | A | task insert | M | D | V61 |
+| 62 | `POST /tasks/{id}` → `updateBackgroundTask` (`platform_api.go:52`) | A | task update | M | D | V62 |
+| 63 | `POST /memory` → `putMemory` (`platform_api.go:69`) | A | memory upsert | M | D | V63 |
+| 64 | `POST /audit` → `postAudit` (`platform_api.go:112`) | A | client-origin business audit row | M | D; security-denial audit is a separate exception | V64 |
+| 65 | `POST /admin/backup` → `backup` (`server.go:2224`) | A | directory + SQLite backup file | E | X and explicit admin authorization | V65 |
+| 66 | `POST /admin/recovery-holds/{runId}/release` → `releaseRecoveryHold` (`accounts.go:526`) | A | recovery-hold UPDATE | M | D with actor admin check and run/hold owner lookup | V66 |
+
+The route count is not a full write count. `GET /api/llm/budget` → `llmBudget` (`platform_api.go`) calls `AccountTokens(owner, 0, budget)`; the amended Store returns a read-only total when tokens are zero. **V67** therefore has no business write. Ordinary authenticated GETs can refresh session `last_seen_at` as credential maintenance; session/API-key in-flight revocation remains a separate impact analysis.
+
+## Host and run manager exits
+
+| ID | Entry and actor | Final sink | Now → required fence | Verify |
+|---|---|---|---|---|
+| H01 | `inprocHost.KVPut`, host owner (`hostcaps.go:295`) | `PutPluginKV` | M → D | VH01 |
+| H02 | `inprocHost.Audit`, host owner; actor label is `plugin:<id>` (`hostcaps.go:309`) | `AppendAuditEvent` | M → D using host owner | VH02 |
+| H03 | `KnowledgeWrite/Publish/Delete`, host owner (`hostcaps.go:350-424`) | knowledge rows, vector rows; publish deletes then writes | M/E → D at every DB sink; X before embedding/remote model | VH03 |
+| H04 | `TaskCreate/Update`, host owner (`hostcaps.go:427-443`) | background-task rows | M → D | VH04 |
+| H05 | `EnsureProject/RenameOwnedProject`, host owner (`project_lifecycle.go:125-135`) | Backend projection rows, RDM callback upstream | M/E → actor D before project-name lock; X at callback | VH05 |
+| H06 | `SurfaceSave`, host owner (`hostcaps.go:481`) | `surfacesvc.Submit` snapshot/event | M → D at Store sinks | VH06 |
+| H07 | `Complete`, host owner (`hostcaps.go:319`) | external LLM request | E → X with context cancellation | VH07 |
+| H08 | scoped Host reconstructed from owner/plugin ID (`hostcaps.go:103`) | same H01-H07 methods | M/E → same final sink fences; early `requireEffective` alone is insufficient | VH08 |
+| G01 | `startClaimedRun`/subagent spawn, run owner (`runmgr.go:1443,1924`) | `CreateRun`, `UpdateRun` and admission rows | M → D for business state; keep failure-only cleanup explicit | VG01 |
+| G02 | `Emit`, `AskHITL`, cards, plan/todos (`runmgr.go:676-935`) | events, HITL/card, plan/todo rows | M → D at each final Store write | VG02 |
+| G03 | `WriteArtifact`, run owner (`runmgr.go:968`) | Blob, artifact, event, knowledge/vector rows | M/E → F then D for each later write | VG03 |
+| G04 | `ExecuteTool`, run owner (`runmgr.go:1080-1167`) | Registry HTTP/command/filesystem side effects, output artifacts | E/M → X before external call; C/D for command and output sinks | VG04 |
+| G05 | `stageInputs`, checkpoint recording/rewind and subagent transcript (`inputs.go:17-90`, `rewind.go:37-99`, `subagent_transcript.go:46-84`) | workspace files | E → X before each effect and cancellation; no cross-system atomic claim | VG05 |
+| G06 | `ResolveHITL`, run/card owner (`runmgr.go:1780-1860`) | HITL/card/event and possible run writes | M → D | VG06 |
+| G07 | background notice delivery and subagent completion (`runmgr.go:1982-2041,2444-2455`) | run/message/event plus transcript files | M/E → D for business rows, X for files | VG07 |
+| G08 | `settleRunWithFence`, run owner (`runmgr.go:1700-1722`) | final run + assistant message | T for enabled check in `store/recovery.go:184-220`; retain narrow failure-state exception | VG08 |
+| G09 | `OnUsage`, run owner (`app.go:668-680`) | usage and budget audit rows | M → D or documented accounting-only exception | VG09 |
+
+At the 4053c4d baseline, Host/runmgr effective-account queries were early checks, Bus confirmation and Surface writes had separate sinks, and artifact content could be overwritten in place before a checked SQL update. These are the reasons for the sink-level mapping below; file paths and old line numbers in the historical tables are navigational rather than final-SHA evidence.
+
+## Amended candidate mapping and limits
+
+This section supersedes the historical `Now` column when checking the amended candidate. V01–V15 retain their existing account/credential transaction or response-only behavior; V16 uses actor-checked login-key revocation. V17–V23 route project, conversation, message, run creation and link writes through account-checked Store entries. V24–V35 use guarded file/message and borrow/secret/context/command entries; V25 prepares the message exclusion and regeneration marker in one checked transaction, then consumes the marker only with successful run settlement. V36–V44 guard command queue, HITL, card, surface/event, artifact metadata and index writes. Artifact content updates switch immutable blob references in the checked transaction. V45–V51 guard profile, prompt, settings and snapshot writes, using the **request actor** for system settings. V52–V59 combine last checks for process/HTTP/tool effects with guarded plugin, surface, card, command pending and audit DB writes. V60–V66 use guarded knowledge, task, memory, audit and hold updates. V65 refuses whole-database backup under authenticated mode because administrator status does not grant access to other owners' business content; auth-off backup has a last check. V67 is read-only at zero tokens.
+
+VH01–VH04/VH06/VH08 use the Host owner and final Store account checks for Backend-owned rows. H05 delegated rename now derives a **single-project** projection from the current authenticated lifecycle or command Host; its final Store transaction locks the real operator and creator in stable order, checks both effective states and verifies the persisted project owner. The global `NewScopedHost` cannot derive this delegated capability; its original creator-owned methods remain. VH07 checks immediately before its external model call and passes the caller context. VG01–VG09 use checked run, admission/lease, event, HITL, card, artifact, index, notice, command and settle sinks. File staging, transcript, tool HTTP/search/code execution and overlay writeback check just before effects and propagate cancellation. Failed/cancelled/interrupted run sealing, lease release, notice deletion and failed-start marker deletion are narrowly scoped safety cleanup; positive token usage is accounting for model work already incurred.
+
+The H05/V17–V19 late-write blocker was reproduced in the earlier candidate and repaired under the separately approved Documents `5783940` plan. Tests cover creator/operator effective state, a disable between early check and final write on SQLite/PG, a two-process PG disable, opposite lock order progress, and both HTTP PATCH and no-conversation command Host sources. The RDM database authorization/intent commit is still separate from Backend's account/project transaction; a permission withdrawal or cross-database failure is handled by the existing I1 failure intent and recovery path rather than a zero-window assertion. Completion and stage 6 claims require exact-HEAD receipts and human review.
+
+The account lock closes the **account-enabled versus Backend-owned business write** race on the same database. It does not prove that a session or API key revoked after request authentication cannot complete a write while that account remains enabled; that is a distinct credential-version fence and outside this amendment's promise. RDM commits in its own database and external requests, processes and files cannot share the Backend transaction. The last check can race with those effects, and a multi-file operation can leave earlier files committed when a later check fails. No cross-database or external zero-window claim is made.
+
+**Sink discovery still required:** Backend source alone cannot enumerate every dynamically registered Bus handler, plugin sidecar command, or the RDM callback's independent database writes. V17–V19, V23, V38, V57–V59 and VH05 must record the actual composed handlers and their final sinks in the tested composition; an unknown or unguarded handler blocks the A1 completion claim. The external HTTP tool destination and filesystem actions depend on runtime configuration, so VG04/VG05 must verify the actual enabled tool set and cancellation points.
+
+## Common implementation and verification gate
+
+1. Build one short Store write-transaction primitive: `Begin` → PG actor advisory lock (`account:<owner>`) → `SELECT enabled ... FOR UPDATE` → existing resource/scope/conversation/admission locks → resource authorization and write → commit. The actor lock must precede all other PG locks, including project-name locks; participating account owners use sorted order, then bootstrap lock where required. `SetAccountEnabled` already takes the account lock (`store/account_state.go:20-45`); `lockAccountUsers` supplies sorted PG account locking (`store/account_model.go:115-145`). SQLite uses `_txlock=immediate` (`store/store.go:188-199`). In auth-off mode, only a missing `OwnerDefault` row is implicitly enabled; an existing disabled row rejects (`app/account_guard.go:10-23`). No DB connection or transaction spans request body decoding, embedding, tool execution, RDM callback, or full HTTP lifetime.
+2. Make methods with only resource IDs derive owner inside the guarded transaction. Pass actor separately for system settings (`OwnerSystemRow`), delegated Host calls, commands, queue commands, audit and background jobs. Preserve project/duty authorization as a separate condition; account enabled does not grant resource access. For files, stage invisible immutable bytes and switch the visible DB reference in `D`; failed transaction deletes staged bytes, post-commit old-blob GC may continue. RDM's independent database keeps the explicit cross-database window from the amendment.
+3. Review **every** V/VH/VG route against its final sink on the fixed candidate SHA. Use deterministic pause-and-disable tests for representative project, message/run, artifact, settings, command/surface and Host/runmgr paths on SQLite and isolated PostgreSQL. Test account lock ordering with two PG connections. Verify the existing credential routes' in-transaction ordering. For external effects, verify the last check and cancellation and state the remaining check-to-effect window. Record exact command, tested SHA and output in the Dev task card; local SELF is not independent REPLAY or CI GATE.
+
+Stage 6 stops if any Backend-owned business write lacks a final actor-enabled transaction fence, if artifact content remains visibly mutable after disable via in-place overwrite, or if an external/RDM effect is described as same-DB atomic. Session/API-key in-flight revocation is a separate amendment impact analysis; enabled checks do not prove credential-revocation fencing.

go.mod

@@ -4,6 +4,7 @@ go 1.27
 
 require (
 	agent-command v0.0.0
+	agent-document-renderer v0.0.0
 	agent-intent v0.0.0
 	agent-native v0.0.0
 	agent-squad v0.0.0
@@ -26,12 +27,15 @@ require (
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.24 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	github.com/rogpeppe/go-internal v1.16.0 // indirect
 	golang.org/x/sync v0.23.0 // indirect
 	golang.org/x/sys v0.48.0 // indirect
 	golang.org/x/text v0.41.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 	modernc.org/libc v1.77.1 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.12.1 // indirect
@@ -52,3 +56,5 @@ replace error-code-system => ./deps/error-code-system
 replace logging-system => ./deps/logging-system
 
 replace agent-command => ./deps/agent-command
+
+replace agent-document-renderer => ./deps/agent-document-renderer

go.sum

@@ -4,6 +4,7 @@ github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
 github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -25,6 +26,10 @@ github.com/jackc/pgx/v5 v5.9.2 h1:3ZhOzMWnR4yJ+RW1XImIPsD1aNSz4T4fyP7zlQb56hw=
 github.com/jackc/pgx/v5 v5.9.2/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
 github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
 github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/ledongthuc/pdf v0.0.0-20260907135840-6c8c28e0e8a0 h1:7Q+xNAZFmnfYOMweHN3c/PDFUKKfY1pVJ26K++QvVfU=
 github.com/ledongthuc/pdf v0.0.0-20260907135840-6c8c28e0e8a0/go.mod h1:1fEHWurg7pvf5SG6XNE5Q8UZmOwex51Mkx3SLhrW5B4=
 github.com/mattn/go-isatty v0.0.24 h1:tGZZoVgT/KiqK1c8ocVLeDS8BSWMRd47J3Lbz7vsReI=
@@ -37,6 +42,8 @@ github.com/redis/go-redis/v9 v9.14.0 h1:u4tNCjXOyzfgeLN+vAZaW1xUooqWDqVEsZN0U01j
 github.com/redis/go-redis/v9 v9.14.0/go.mod h1:huWgSWd8mW6+m0VPhJjSSQ+d6Nh1VICQ6Q5lHuCH/Iw=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/rogpeppe/go-internal v1.16.0 h1:O9DK+vNMDVGLr2BeZqmpLeMjiMNkuXfcqntWbZV6S5g=
+github.com/rogpeppe/go-internal v1.16.0/go.mod h1:DrUVZyrJU+txYW5/1kwtXQSMFio52ZOxX7yM1VHvnxs=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -55,6 +62,8 @@ golang.org/x/text v0.41.0/go.mod h1:jvf1O8ajNzZqhSrQBPbutR/EB83Cc0CFrezNQIwbb5M=
 golang.org/x/tools v0.50.0 h1:c2ifzfcuY7L90lZ2aKd8S4K2NpASF08SZx9ZuJkHmSU=
 golang.org/x/tools v0.50.0/go.mod h1:7ulVMw3831Mwi5EZD6RomGyffr4VFjuNYXf2BbCEAV0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/app/account_directory.go

@@ -0,0 +1,407 @@
+package app
+
+import (
+	"context"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"sort"
+	"strings"
+	"sync"
+	"unicode"
+	"unicode/utf8"
+
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+)
+
+type accountDirectorySlot struct {
+	mu         sync.RWMutex
+	pluginID   string
+	resolver   extension.AccountDirectoryScopeResolver
+	secret     [32]byte
+	keyVersion int
+}
+
+func newAccountDirectorySlot(st *store.Store) (*accountDirectorySlot, error) {
+	key, err := st.GetAccountCursorKey()
+	if err != nil {
+		return nil, err
+	}
+	return &accountDirectorySlot{secret: key.Secret, keyVersion: key.Version}, nil
+}
+
+func (s *accountDirectorySlot) register(pluginID string, fn extension.AccountDirectoryScopeResolver) error {
+	if fn == nil || pluginID != "rdm" {
+		return store.ErrAccountForbidden
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.resolver != nil {
+		return errors.New("account directory resolver already registered")
+	}
+	s.pluginID, s.resolver = pluginID, fn
+	return nil
+}
+
+type directoryPolicy struct {
+	allowed    map[string]bool
+	match      []string
+	candidates map[string]bool
+	owners     map[string]bool
+	rows       []store.DirectoryAccountRow
+	all        bool
+	status     string
+	version    string
+}
+
+type directoryCursor struct {
+	KeyVersion int    `json:"k"`
+	Version    string `json:"v"`
+	Owner      string `json:"o"`
+	UserID     string `json:"u"`
+}
+
+type directoryVisibleRow struct {
+	UserID  string
+	Owner   string
+	Enabled bool
+	Name    string
+	StaffNo string
+}
+
+func knownDirectoryField(field string) bool {
+	return field == "owner" || field == "name" || field == "staffNo"
+}
+
+func (h inprocHost) directoryPolicy(ctx context.Context, q extension.AccountDirectoryQuery, loadRows bool) (directoryPolicy, error) {
+	var p directoryPolicy
+	if err := h.requireEffective(); err != nil {
+		return p, err
+	}
+	if h.actor == "" || h.caps.st == nil || h.caps.directory == nil || q.SchemaVersion != extension.AccountDirectorySchemaVersion {
+		return p, store.ErrAccountForbidden
+	}
+	actor, err := h.caps.st.GetUserAuthState(h.actor)
+	if err != nil || !actor.Enabled {
+		return p, store.ErrAccountForbidden
+	}
+	if q.Mode != extension.AccountDirectoryModeExact && q.Mode != extension.AccountDirectoryModeFuzzy {
+		return p, store.ErrInvalidAccountProfile
+	}
+	if !utf8.ValidString(q.Query) || utf8.RuneCountInString(q.Query) > 128 {
+		return p, store.ErrInvalidAccountProfile
+	}
+	for _, r := range q.Query {
+		if unicode.IsControl(r) {
+			return p, store.ErrInvalidAccountProfile
+		}
+	}
+	p.status = q.Status
+	if p.status == "" {
+		p.status = "enabled"
+	}
+	if p.status != "enabled" && p.status != "disabled" && p.status != "all" {
+		return p, store.ErrInvalidAccountProfile
+	}
+	var scope extension.AccountDirectoryScope
+	switch q.Purpose {
+	case extension.AccountDirectoryPurposeSystemUsers:
+		if !actor.IsAdmin || q.ProjectID != "" || q.DocumentID != "" {
+			return p, store.ErrAccountForbidden
+		}
+		scope = extension.AccountDirectoryScope{AllowedFields: []string{"owner", "name", "staffNo"},
+			MatchFields: []string{"owner", "name", "staffNo"}, AllCandidates: true, ScopeVersion: "system.users.v1"}
+	case extension.AccountDirectoryPurposeProjectMembers, extension.AccountDirectoryPurposeDocumentDuties:
+		if h.pluginID != "rdm" || q.ProjectID == "" || (q.Purpose == extension.AccountDirectoryPurposeDocumentDuties && q.DocumentID == "") ||
+			(q.Purpose == extension.AccountDirectoryPurposeProjectMembers && q.DocumentID != "") || p.status != "enabled" {
+			return p, store.ErrAccountForbidden
+		}
+		h.caps.directory.mu.RLock()
+		resolver, pluginID := h.caps.directory.resolver, h.caps.directory.pluginID
+		h.caps.directory.mu.RUnlock()
+		if resolver == nil || pluginID != h.pluginID {
+			return p, store.ErrAccountForbidden
+		}
+		scope, err = resolver(ctx, extension.AccountDirectoryScopeRequest{
+			Actor: h.actor, PluginID: h.pluginID, Purpose: q.Purpose, ProjectID: q.ProjectID, DocumentID: q.DocumentID,
+		})
+		if err != nil {
+			return p, store.ErrAccountForbidden
+		}
+		if q.Purpose == extension.AccountDirectoryPurposeDocumentDuties && scope.AllCandidates {
+			return p, store.ErrAccountForbidden
+		}
+	default:
+		return p, store.ErrAccountForbidden
+	}
+	if scope.ScopeVersion == "" {
+		return p, store.ErrAccountForbidden
+	}
+	p.allowed = map[string]bool{"owner": true}
+	for _, field := range scope.AllowedFields {
+		if !knownDirectoryField(field) {
+			return p, store.ErrAccountForbidden
+		}
+		p.allowed[field] = true
+	}
+	matchAllowed := map[string]bool{}
+	for _, field := range scope.MatchFields {
+		if !knownDirectoryField(field) || !p.allowed[field] {
+			return p, store.ErrAccountForbidden
+		}
+		matchAllowed[field] = true
+	}
+	requested := q.SearchFields
+	if len(requested) == 0 {
+		requested = []string{"owner", "name"}
+	}
+	for _, field := range requested {
+		if !matchAllowed[field] {
+			return p, store.ErrAccountForbidden
+		}
+		p.match = append(p.match, field)
+	}
+	sort.Strings(p.match)
+	p.candidates = make(map[string]bool, len(scope.CandidateIDs))
+	p.owners = make(map[string]bool, len(scope.CandidateOwners))
+	for _, id := range scope.CandidateIDs {
+		if id == "" {
+			return p, store.ErrAccountForbidden
+		}
+		p.candidates[id] = true
+	}
+	for _, owner := range scope.CandidateOwners {
+		if owner == "" {
+			return p, store.ErrAccountForbidden
+		}
+		p.owners[owner] = true
+	}
+	p.all = scope.AllCandidates
+	if q.Purpose == extension.AccountDirectoryPurposeSystemUsers {
+		p.all = true
+	}
+	visible := make([]directoryVisibleRow, 0)
+	if loadRows {
+		rows, err := h.caps.st.ListDirectoryAccountRows()
+		if err != nil {
+			return p, err
+		}
+		for _, row := range rows {
+			if !directoryRowAllowed(row, p) {
+				continue
+			}
+			p.rows = append(p.rows, row)
+			item := directoryVisibleRow{UserID: row.UserID, Owner: row.Owner, Enabled: row.Enabled}
+			if p.allowed["name"] {
+				item.Name = row.Name
+			}
+			if p.allowed["staffNo"] {
+				item.StaffNo = row.StaffNo
+			}
+			visible = append(visible, item)
+		}
+	}
+	ids := make([]string, 0, len(p.candidates))
+	for id := range p.candidates {
+		ids = append(ids, id)
+	}
+	sort.Strings(ids)
+	owners := make([]string, 0, len(p.owners))
+	for owner := range p.owners {
+		owners = append(owners, owner)
+	}
+	sort.Strings(owners)
+	allowed := make([]string, 0, len(p.allowed))
+	for field := range p.allowed {
+		allowed = append(allowed, field)
+	}
+	sort.Strings(allowed)
+	fingerprint := struct {
+		Actor, Plugin, Purpose, Project, Document, Mode, Query, Status, Scope string
+		Match, Allowed, IDs, Owners                                           []string
+		Visible                                                               []directoryVisibleRow
+		All                                                                   bool
+	}{Actor: h.actor, Plugin: h.pluginID, Purpose: q.Purpose, Project: q.ProjectID, Document: q.DocumentID,
+		Mode: q.Mode, Query: strings.TrimSpace(q.Query), Status: p.status,
+		Scope: scope.ScopeVersion, Match: p.match, Allowed: allowed, IDs: ids, Owners: owners, Visible: visible, All: p.all}
+	encoded, err := json.Marshal(fingerprint)
+	if err != nil {
+		return p, err
+	}
+	digest := sha256.Sum256(encoded)
+	p.version = hex.EncodeToString(digest[:])
+	return p, nil
+}
+
+func (s *accountDirectorySlot) encodeCursor(c directoryCursor) (string, error) {
+	c.KeyVersion = s.keyVersion
+	data, err := json.Marshal(c)
+	if err != nil {
+		return "", err
+	}
+	mac := hmac.New(sha256.New, s.secret[:])
+	_, _ = mac.Write([]byte("iam-directory-cursor-v1\x00"))
+	_, _ = mac.Write(data)
+	return base64.RawURLEncoding.EncodeToString(data) + "." + base64.RawURLEncoding.EncodeToString(mac.Sum(nil)), nil
+}
+
+func (s *accountDirectorySlot) decodeCursor(token, version string) (directoryCursor, error) {
+	var c directoryCursor
+	payload, signature, found := strings.Cut(token, ".")
+	if !found {
+		return c, store.ErrConflict
+	}
+	data, err := base64.RawURLEncoding.DecodeString(payload)
+	if err != nil || len(data) > 1024 {
+		return c, store.ErrConflict
+	}
+	provided, err := base64.RawURLEncoding.DecodeString(signature)
+	if err != nil {
+		return c, store.ErrConflict
+	}
+	mac := hmac.New(sha256.New, s.secret[:])
+	_, _ = mac.Write([]byte("iam-directory-cursor-v1\x00"))
+	_, _ = mac.Write(data)
+	if !hmac.Equal(provided, mac.Sum(nil)) || json.Unmarshal(data, &c) != nil || c.KeyVersion != s.keyVersion || c.Version != version || c.Owner == "" || c.UserID == "" {
+		return directoryCursor{}, store.ErrConflict
+	}
+	return c, nil
+}
+
+func directoryEntry(row store.DirectoryAccountRow, p directoryPolicy) extension.AccountDirectoryEntry {
+	entry := extension.AccountDirectoryEntry{UserID: row.UserID, Owner: row.Owner, Valid: row.Enabled}
+	if p.allowed["name"] {
+		entry.Name = row.Name
+	}
+	if p.allowed["staffNo"] {
+		entry.StaffNo = row.StaffNo
+	}
+	return entry
+}
+
+func directoryMatches(row store.DirectoryAccountRow, fields []string, mode, query string) bool {
+	for _, field := range fields {
+		value := row.Owner
+		switch field {
+		case "name":
+			value = row.Name
+		case "staffNo":
+			value = row.StaffNo
+		}
+		if mode == extension.AccountDirectoryModeExact && strings.EqualFold(value, query) {
+			return true
+		}
+		if mode == extension.AccountDirectoryModeFuzzy && strings.Contains(strings.ToLower(value), strings.ToLower(query)) {
+			return true
+		}
+	}
+	return false
+}
+
+func directoryRowAllowed(row store.DirectoryAccountRow, p directoryPolicy) bool {
+	if !p.all && !p.candidates[row.UserID] && !p.owners[row.Owner] {
+		return false
+	}
+	return p.status == "all" || (p.status == "enabled" && row.Enabled) || (p.status == "disabled" && !row.Enabled)
+}
+
+func (h inprocHost) QueryAccountDirectory(ctx context.Context, q extension.AccountDirectoryQuery) (extension.AccountDirectoryPage, error) {
+	query := strings.TrimSpace(q.Query)
+	p, err := h.directoryPolicy(ctx, q, query != "")
+	if err != nil {
+		return extension.AccountDirectoryPage{}, err
+	}
+	maxLimit := 50
+	if q.Purpose == extension.AccountDirectoryPurposeSystemUsers {
+		maxLimit = 100
+	}
+	if q.Limit == 0 {
+		q.Limit = 20
+	}
+	if q.Limit < 1 || q.Limit > maxLimit {
+		return extension.AccountDirectoryPage{}, store.ErrInvalidAccountProfile
+	}
+	page := extension.AccountDirectoryPage{Entries: []extension.AccountDirectoryEntry{}, DirectoryVersion: p.version}
+	if query == "" {
+		if q.Cursor != "" {
+			return extension.AccountDirectoryPage{}, store.ErrConflict
+		}
+		return page, nil
+	}
+	if q.Mode == extension.AccountDirectoryModeFuzzy && utf8.RuneCountInString(query) < 2 {
+		return extension.AccountDirectoryPage{}, store.ErrInvalidAccountProfile
+	}
+	var after directoryCursor
+	if q.Cursor != "" {
+		after, err = h.caps.directory.decodeCursor(q.Cursor, p.version)
+		if err != nil {
+			return extension.AccountDirectoryPage{}, err
+		}
+	}
+	matched := make([]store.DirectoryAccountRow, 0, q.Limit+1)
+	for _, row := range p.rows {
+		if !directoryMatches(row, p.match, q.Mode, query) {
+			continue
+		}
+		if after.Owner != "" && (row.Owner < after.Owner || (row.Owner == after.Owner && row.UserID <= after.UserID)) {
+			continue
+		}
+		matched = append(matched, row)
+		if len(matched) > q.Limit {
+			break
+		}
+	}
+	more := len(matched) > q.Limit
+	if more {
+		matched = matched[:q.Limit]
+	}
+	for _, row := range matched {
+		page.Entries = append(page.Entries, directoryEntry(row, p))
+	}
+	if more {
+		last := matched[len(matched)-1]
+		page.NextCursor, err = h.caps.directory.encodeCursor(directoryCursor{Version: p.version, Owner: last.Owner, UserID: last.UserID})
+		if err != nil {
+			return extension.AccountDirectoryPage{}, err
+		}
+	}
+	return page, nil
+}
+
+func (h inprocHost) LookupAccountDirectory(ctx context.Context, q extension.AccountDirectoryQuery, userID string) (extension.AccountDirectoryLookup, error) {
+	if userID == "" || q.Cursor != "" {
+		return extension.AccountDirectoryLookup{}, store.ErrInvalidAccountProfile
+	}
+	p, err := h.directoryPolicy(ctx, q, true)
+	if err != nil {
+		return extension.AccountDirectoryLookup{}, err
+	}
+	for _, row := range p.rows {
+		if row.UserID == userID {
+			return extension.AccountDirectoryLookup{Entry: directoryEntry(row, p), DirectoryVersion: p.version}, nil
+		}
+	}
+	return extension.AccountDirectoryLookup{}, store.ErrNotFound
+}
+
+func (h inprocHost) LookupAccountDirectoryOwner(ctx context.Context, q extension.AccountDirectoryQuery, owner string) (extension.AccountDirectoryLookup, error) {
+	if owner == "" || q.Cursor != "" {
+		return extension.AccountDirectoryLookup{}, store.ErrInvalidAccountProfile
+	}
+	p, err := h.directoryPolicy(ctx, q, true)
+	if err != nil {
+		return extension.AccountDirectoryLookup{}, err
+	}
+	for _, row := range p.rows {
+		if row.Owner == owner {
+			return extension.AccountDirectoryLookup{Entry: directoryEntry(row, p), DirectoryVersion: p.version}, nil
+		}
+	}
+	return extension.AccountDirectoryLookup{}, store.ErrNotFound
+}
+
+var _ extension.AccountDirectoryProvider = inprocHost{}

internal/app/account_directory_test.go

@@ -0,0 +1,221 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+)
+
+func openDirectoryTestStore(t *testing.T) *store.Store {
+	t.Helper()
+	dsn := os.Getenv("AGENT_PG_TEST_DSN")
+	if dsn == "" {
+		st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "directory.db"))
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Cleanup(func() { st.Close() })
+		return st
+	}
+	admin, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	schema := "t_" + strings.ToLower(store.NewID("dir"))
+	if _, err := admin.Exec(`CREATE EXTENSION IF NOT EXISTS pg_trgm`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := admin.Exec(`CREATE SCHEMA ` + schema); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		_, _ = admin.Exec(`DROP SCHEMA IF EXISTS ` + schema + ` CASCADE`)
+		_ = admin.Close()
+	})
+	separator := "?"
+	if strings.Contains(dsn, "?") {
+		separator = "&"
+	}
+	st, err := store.OpenPostgres(dsn+separator+"search_path="+schema+",public", filepath.Join(t.TempDir(), "artifacts"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { st.Close() })
+	return st
+}
+
+func TestAccountDirectoryAppliesDomainScopeBeforeSearchAndCursor(t *testing.T) {
+	st := openDirectoryTestStore(t)
+	t.Logf("directory provider dialect=%s", st.Dialect())
+	if err := st.CreateAccount("admin", "", "hash", true); err != nil {
+		t.Fatal(err)
+	}
+	alice, err := st.CreatePendingAccount("admin", "alice", store.AccountProfile{Name: "同名", StaffNo: "hidden-a"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	bob, err := st.CreatePendingAccount("admin", "bob", store.AccountProfile{Name: "同名", StaffNo: "hidden-b"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	outsider, err := st.CreatePendingAccount("admin", "outsider", store.AccountProfile{Name: "同名", StaffNo: "hidden-x"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	slot, err := newAccountDirectorySlot(st)
+	if err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: hostcaps{st: st, directory: slot}, pluginID: "rdm", actor: "admin", owner: "admin"}
+	query := extension.AccountDirectoryQuery{SchemaVersion: extension.AccountDirectorySchemaVersion,
+		Purpose: extension.AccountDirectoryPurposeProjectMembers, ProjectID: "project-1",
+		Mode: extension.AccountDirectoryModeFuzzy, Query: "同名", Limit: 1}
+	if _, err := h.QueryAccountDirectory(context.Background(), query); err == nil {
+		t.Fatal("domain directory ran without trusted resolver")
+	}
+	if err := (pluginRegistry{pluginID: "rdm", caps: h.caps}).RegisterAccountDirectoryScopeResolver(func(context.Context, extension.AccountDirectoryScopeRequest) (extension.AccountDirectoryScope, error) {
+		return extension.AccountDirectoryScope{AllowedFields: []string{"owner", "name"}, MatchFields: []string{"owner", "name"},
+			CandidateIDs: []string{alice.ID, bob.ID}, ScopeVersion: "scope-1"}, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	page, err := h.QueryAccountDirectory(context.Background(), query)
+	if err != nil || len(page.Entries) != 1 || page.Entries[0].UserID != alice.ID || page.Entries[0].StaffNo != "" || page.NextCursor == "" {
+		t.Fatalf("first scoped page: %+v %v", page, err)
+	}
+	query.Cursor = page.NextCursor
+	otherSlot, err := newAccountDirectorySlot(st)
+	if err != nil {
+		t.Fatal(err)
+	}
+	otherSlot.pluginID, otherSlot.resolver = slot.pluginID, slot.resolver
+	otherHost := h
+	otherHost.caps.directory = otherSlot
+	second, err := otherHost.QueryAccountDirectory(context.Background(), query)
+	if err != nil || len(second.Entries) != 1 || second.Entries[0].UserID != bob.ID || second.NextCursor != "" {
+		t.Fatalf("second scoped page on another host: %+v %v", second, err)
+	}
+	query.Cursor = ""
+	query.Query = "hidden-x"
+	if found, err := h.QueryAccountDirectory(context.Background(), query); err != nil || len(found.Entries) != 0 {
+		t.Fatalf("hidden staff number matched: %+v %v", found, err)
+	}
+	query.SearchFields = []string{"staffNo"}
+	if _, err := h.QueryAccountDirectory(context.Background(), query); err == nil {
+		t.Fatal("hidden staff number accepted as search field")
+	}
+	query.SearchFields = nil
+	query.Query = "同名"
+	if hit, err := h.LookupAccountDirectoryOwner(context.Background(), query, "alice"); err != nil || hit.Entry.UserID != alice.ID {
+		t.Fatalf("explicit owner lookup failed to resolve stable ID: %+v %v", hit, err)
+	}
+	if _, err := h.LookupAccountDirectoryOwner(context.Background(), query, "outsider"); !errors.Is(err, store.ErrNotFound) {
+		t.Fatalf("owner lookup leaked outsider: %v", err)
+	}
+	if _, err := h.LookupAccountDirectory(context.Background(), query, "not-in-scope"); !errors.Is(err, store.ErrNotFound) {
+		t.Fatalf("exact lookup leaked outsider: %v", err)
+	}
+	page, err = h.QueryAccountDirectory(context.Background(), query)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.PatchAccountProfile("admin", alice.ID, alice.ProfileVersion, map[string]string{"phone": "private-edit"}); err != nil {
+		t.Fatal(err)
+	}
+	query.Cursor = page.NextCursor
+	if _, err := h.QueryAccountDirectory(context.Background(), query); err != nil {
+		t.Fatalf("private edit invalidated candidate cursor: %v", err)
+	}
+	if _, err := st.PatchAccountProfile("admin", alice.ID, alice.ProfileVersion+1, map[string]string{"staffNo": "still-hidden"}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := h.QueryAccountDirectory(context.Background(), query); err != nil {
+		t.Fatalf("unavailable field invalidated candidate cursor: %v", err)
+	}
+	if _, err := st.PatchAccountProfile("admin", outsider.ID, outsider.ProfileVersion, map[string]string{"name": "out-of-scope-change"}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := h.QueryAccountDirectory(context.Background(), query); err != nil {
+		t.Fatalf("out-of-scope edit invalidated candidate cursor: %v", err)
+	}
+	if _, err := st.PatchAccountProfile("admin", alice.ID, alice.ProfileVersion+2, map[string]string{"name": "changed"}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := h.QueryAccountDirectory(context.Background(), query); !errors.Is(err, store.ErrConflict) {
+		t.Fatalf("visible edit did not invalidate cursor: %v", err)
+	}
+}
+
+func TestPGDirectoryCursorContinuesInAnotherProcess(t *testing.T) {
+	baseDSN := os.Getenv("AGENT_PG_TEST_DSN")
+	if baseDSN == "" {
+		t.Skip("isolated PostgreSQL test DSN required")
+	}
+	if os.Getenv("IAM_U3_DIRECTORY_CHILD") == "1" {
+		schema := os.Getenv("IAM_U3_DIRECTORY_SCHEMA")
+		separator := "?"
+		if strings.Contains(baseDSN, "?") {
+			separator = "&"
+		}
+		st, err := store.OpenExistingPostgres(baseDSN+separator+"search_path="+schema+",public", filepath.Join(t.TempDir(), "artifacts"))
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer st.Close()
+		slot, err := newAccountDirectorySlot(st)
+		if err != nil {
+			t.Fatal(err)
+		}
+		h := inprocHost{caps: hostcaps{st: st, directory: slot}, actor: "admin", owner: "admin"}
+		q := extension.AccountDirectoryQuery{SchemaVersion: extension.AccountDirectorySchemaVersion,
+			Purpose: extension.AccountDirectoryPurposeSystemUsers, Mode: extension.AccountDirectoryModeFuzzy,
+			Query: "same", Limit: 1, Cursor: os.Getenv("IAM_U3_DIRECTORY_CURSOR")}
+		page, err := h.QueryAccountDirectory(context.Background(), q)
+		if err != nil || len(page.Entries) != 1 || page.Entries[0].Owner != "beta" {
+			t.Fatalf("cross-process page: %+v %v", page, err)
+		}
+		return
+	}
+	st := openDirectoryTestStore(t)
+	if err := st.EnsureSystemIdentity("u3-directory-cross-process", "pg"); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.CreateAccount("admin", "Admin", "hash", true); err != nil {
+		t.Fatal(err)
+	}
+	for _, owner := range []string{"alpha", "beta"} {
+		if _, err := st.CreatePendingAccount("admin", owner, store.AccountProfile{Name: "same"}); err != nil {
+			t.Fatal(err)
+		}
+	}
+	slot, err := newAccountDirectorySlot(st)
+	if err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: hostcaps{st: st, directory: slot}, actor: "admin", owner: "admin"}
+	q := extension.AccountDirectoryQuery{SchemaVersion: extension.AccountDirectorySchemaVersion,
+		Purpose: extension.AccountDirectoryPurposeSystemUsers, Mode: extension.AccountDirectoryModeFuzzy,
+		Query: "same", Limit: 1}
+	page, err := h.QueryAccountDirectory(context.Background(), q)
+	if err != nil || len(page.Entries) != 1 || page.Entries[0].Owner != "alpha" || page.NextCursor == "" {
+		t.Fatalf("initial page: %+v %v", page, err)
+	}
+	var schema string
+	if err := st.DB().QueryRow(`SELECT current_schema()`).Scan(&schema); err != nil {
+		t.Fatal(err)
+	}
+	cmd := exec.Command(os.Args[0], "-test.run=^TestPGDirectoryCursorContinuesInAnotherProcess$")
+	cmd.Env = append(os.Environ(), "IAM_U3_DIRECTORY_CHILD=1", "IAM_U3_DIRECTORY_SCHEMA="+schema,
+		"IAM_U3_DIRECTORY_CURSOR="+page.NextCursor)
+	if out, err := cmd.CombinedOutput(); err != nil {
+		t.Fatalf("cross-process cursor failed: %v: %s", err, strings.ReplaceAll(string(out), baseDSN, "[REDACTED]"))
+	}
+}

internal/app/account_guard.go

@@ -0,0 +1,24 @@
+package app
+
+import (
+	"context"
+	"errors"
+
+	"agent-system-backend/internal/store"
+)
+
+// accountEffectiveAuthorization is shared by runmgr and in-process Host
+// capabilities. The implicit local singleton is the only auth-off missing-row
+// exception; an existing disabled local account remains denied.
+func accountEffectiveAuthorization(st *store.Store, authOn bool) func(context.Context, string) (bool, error) {
+	return func(_ context.Context, owner string) (bool, error) {
+		account, err := st.GetAccountByOwner(owner)
+		if errors.Is(err, store.ErrNotFound) && !authOn && owner == store.OwnerDefault {
+			return true, nil
+		}
+		if err != nil {
+			return false, err
+		}
+		return account.Enabled, nil
+	}
+}

internal/app/account_guard_test.go

@@ -0,0 +1,117 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"agent-system-backend/internal/settings"
+	"agent-system-backend/internal/store"
+)
+
+func TestInprocHostRechecksEffectiveAccountOnEveryCapability(t *testing.T) {
+	st, err := store.OpenSQLite(t.TempDir() + "/host.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.CreateAccount("alice", "", "", false); err != nil {
+		t.Fatal(err)
+	}
+	check := accountEffectiveAuthorization(st, true)
+	h := inprocHost{caps: hostcaps{st: st, accountGuard: func(owner string) error {
+		valid, err := check(context.Background(), owner)
+		if err != nil {
+			return err
+		}
+		if !valid {
+			return store.ErrAccountForbidden
+		}
+		return nil
+	}}, owner: "alice", actor: "alice", pluginID: "rdm"}
+	if err := h.KVPut("before", "allowed"); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.DB().Exec(`UPDATE users SET enabled=FALSE WHERE owner=?`, "alice"); err != nil {
+		t.Fatal(err)
+	}
+	if err := h.KVPut("after", "denied"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host wrote KV: %v", err)
+	}
+	if _, _, err := h.KVGet("before"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host read KV: %v", err)
+	}
+	if _, err := h.TaskCreate("test", "denied", ""); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host created task: %v", err)
+	}
+	if _, err := h.ProjectNameAvailable("denied", ""); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host used project capability: %v", err)
+	}
+	if err := h.Audit("action", "target", ""); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host wrote audit: %v", err)
+	}
+	if _, err := h.Complete(context.Background(), "denied"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host reached model completion: %v", err)
+	}
+	if _, err := h.KnowledgeSearch(context.Background(), "", "denied", 1); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled host read knowledge: %v", err)
+	}
+}
+
+func TestHostCompletionChecksAgainAfterModelSettingsRead(t *testing.T) {
+	st, err := store.OpenSQLite(t.TempDir() + "/host-complete.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	requests := 0
+	model := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		requests++
+		_, _ = w.Write([]byte(`{"choices":[{"message":{"content":"late"}}]}`))
+	}))
+	defer model.Close()
+	set := settings.NewService(st)
+	set.SetSystemOverride(map[string]any{"models": map[string]any{"chat": map[string]any{"model": "test", "baseUrl": model.URL}}})
+	checks := 0
+	h := inprocHost{caps: hostcaps{st: st, set: set, accountGuard: func(string) error {
+		checks++
+		if checks >= 3 {
+			return store.ErrAccountForbidden
+		}
+		return nil
+	}}, owner: "alice", actor: "alice", pluginID: "rdm"}
+	if _, err := h.Complete(context.Background(), "late"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("completion after disable: %v", err)
+	}
+	if checks != 3 || requests != 0 {
+		t.Fatalf("late completion reached model: checks=%d requests=%d", checks, requests)
+	}
+}
+
+func TestImplicitLocalAccountExceptionIsAuthOffOnly(t *testing.T) {
+	st, err := store.OpenSQLite(t.TempDir() + "/local.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	allowed, err := accountEffectiveAuthorization(st, false)(context.Background(), store.OwnerDefault)
+	if err != nil || !allowed {
+		t.Fatalf("implicit local denied: %v %v", allowed, err)
+	}
+	allowed, err = accountEffectiveAuthorization(st, true)(context.Background(), store.OwnerDefault)
+	if !errors.Is(err, store.ErrNotFound) || allowed {
+		t.Fatalf("auth-on missing account allowed: %v %v", allowed, err)
+	}
+	if err := st.EnsureUser(store.OwnerDefault, ""); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.DB().Exec(`UPDATE users SET enabled=FALSE WHERE owner=?`, store.OwnerDefault); err != nil {
+		t.Fatal(err)
+	}
+	allowed, err = accountEffectiveAuthorization(st, false)(context.Background(), store.OwnerDefault)
+	if err != nil || allowed {
+		t.Fatalf("disabled existing local account allowed: %v %v", allowed, err)
+	}
+}

internal/app/account_lister_test.go

@@ -16,11 +16,20 @@ func TestInprocHostListAccounts(t *testing.T) {
 	}
 	t.Cleanup(func() { st.Close() })
 	for _, o := range []string{"carol", "alice", "bob", "dave"} {
+		if err := st.EnsureUser(o, ""); err != nil {
+			t.Fatal(err)
+		}
 		if _, err := st.CreateAPIKey(o, "e2e"); err != nil {
 			t.Fatal(err)
 		}
 	}
-	h := inprocHost{caps: hostcaps{st: st}}
+	if _, err := st.DB().Exec(`UPDATE users SET is_admin=TRUE WHERE owner='alice'`); err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: hostcaps{st: st}, owner: "alice", actor: "alice"}
+	if _, _, err := (inprocHost{caps: hostcaps{st: st}}).ListAccounts("", 2); err == nil {
+		t.Fatal("legacy directory allowed a host without a trusted dispatch actor")
+	}
 
 	// 首页（limit=2）：alice/bob，next=bob。
 	page, next, err := h.ListAccounts("", 2)
@@ -50,6 +59,12 @@ func TestInprocHostListAccounts(t *testing.T) {
 	if _, _, err := h.ListAccounts("", 999); err != nil {
 		t.Fatalf("limit 超限应钳制不报错: %v", err)
 	}
+	if _, err := st.DB().Exec(`UPDATE users SET enabled=FALSE WHERE owner='alice'`); err != nil {
+		t.Fatal(err)
+	}
+	if _, _, err := h.ListAccounts("", 2); err == nil {
+		t.Fatal("disabled administrator retained legacy directory access")
+	}
 }
 
 // TestInprocHostSearchAccounts：EXT-19 扩展 SearchAccounts——账号/姓名子串
@@ -65,7 +80,7 @@ func TestInprocHostSearchAccounts(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if err := st.CreateAccount("alice", "王小明", hash, false); err != nil {
+	if err := st.CreateAccount("alice", "王小明", hash, true); err != nil {
 		t.Fatal(err)
 	}
 	if err := st.CreateAccount("bob", "李大明", hash, false); err != nil {
@@ -74,7 +89,10 @@ func TestInprocHostSearchAccounts(t *testing.T) {
 	if err := st.CreateAccount("carol", "", hash, false); err != nil {
 		t.Fatal(err)
 	}
-	h := inprocHost{caps: hostcaps{st: st}}
+	h := inprocHost{caps: hostcaps{st: st}, owner: "alice", actor: "alice"}
+	if _, err := (inprocHost{caps: hostcaps{st: st}, owner: "bob", actor: "bob"}).SearchAccounts("alice", 50); err == nil {
+		t.Fatal("ordinary actor gained legacy system directory search")
+	}
 
 	// 姓名子串（同名区分场景）：两个"大明/小明"都以"明"命中。
 	got, err := h.SearchAccounts("明", 50)

internal/app/account_ops_existing_test.go

@@ -0,0 +1,58 @@
+package app
+
+import (
+	"agent-system-backend/internal/store"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestAccountMaintenanceDefaultsToNonCreatingOpen(t *testing.T) {
+	t.Setenv("AGENT_SYSTEM_DSN", "")
+	for _, tc := range []struct {
+		name string
+		run  func(string) error
+	}{
+		{"user", func(dir string) error {
+			_, _, err := CreateUserAccount("", dir, "ada", "Ada", "", false, false, false)
+			return err
+		}},
+		{"apikey", func(dir string) error {
+			_, err := CreateAPIKey("", dir, "ada", "test")
+			return err
+		}},
+		{"identity verify", func(dir string) error {
+			_, err := VerifySystemIdentity("", dir, "fixture", "sqlite")
+			return err
+		}},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			dir := filepath.Join(t.TempDir(), "absent")
+			if err := tc.run(dir); err == nil {
+				t.Error("maintenance created a missing database")
+			}
+			if _, err := os.Stat(dir); !os.IsNotExist(err) {
+				t.Error("failed maintenance created a directory")
+			}
+		})
+	}
+}
+func TestAccountMaintenanceCannotImplicitlyMigrate(t *testing.T) {
+	t.Setenv("AGENT_SYSTEM_DSN", "")
+	dir := t.TempDir()
+	st, err := store.OpenSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := st.EnsureSystemIdentity("test", "sqlite"); err != nil {
+		t.Fatal(err)
+	}
+	// Roll back the newest additive migration in this private fixture only.
+	if err := st.MigrateDown(store.SchemaTarget() - 1); err != nil {
+		t.Fatal(err)
+	}
+	st.Close()
+	if _, _, err := CreateUserAccount("", dir, "ada", "Ada", "", false, false, false); err == nil {
+		t.Error("account command implicitly migrated an older schema")
+	}
+}

internal/app/app.go

@@ -5,6 +5,7 @@ package app
 import (
 	"context"
 	"crypto/rand"
+	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
@@ -30,7 +31,6 @@ import (
 	"agent-native/runtime/telemetry"
 	agenttools "agent-native/runtime/tools"
 	nativeadp "agent-squad/adapters/native"
-	"agent-system-backend/internal/blobstore"
 	"agent-system-backend/internal/bus"
 	"agent-system-backend/internal/cardsvc"
 	"agent-system-backend/internal/cmdbus"
@@ -60,16 +60,17 @@ import (
 )
 
 type Options struct {
-	Addr           string
-	DataDir        string
-	PluginsDir     string
-	ForceMock      bool
-	StorageDSN     string // 空 = 嵌入式 SQLite 档；非空 = PostgreSQL 档（多用户/多实例）
-	ArtifactsDir   string // PG 档工件对象目录（空 = <DataDir>/artifacts）
-	AuthMode       string // auto（默认：PG 档开、嵌入式关）| on | off
-	InstanceID     string // 空 = 主机名:监听地址；写入 runs.instance_id，启动对账只收口本实例
-	InsecureListen bool
-	AllowedHosts   []string
+	Addr                  string
+	DataDir               string
+	PluginsDir            string
+	ForceMock             bool
+	StorageDSN            string // 空 = 嵌入式 SQLite 档；非空 = PostgreSQL 档（多用户/多实例）
+	ArtifactsDir          string // PG 档工件对象目录（空 = <DataDir>/artifacts）
+	AuthMode              string // auto（默认：PG 档开、嵌入式关）| on | off
+	RequireProjectContext bool
+	InstanceID            string // 空 = 主机名:监听地址；写入 runs.instance_id，启动对账只收口本实例
+	InsecureListen        bool
+	AllowedHosts          []string
 	// DisableUploadIndexing EXT-9：true 时上传端点不自动写检索索引（发布决定
 	// 移交下游命令层）；零值=false=现状。由 link 层自 extension.Options 透传。
 	DisableUploadIndexing bool
@@ -86,6 +87,9 @@ type Options struct {
 	// ExecDepsDir sandbox 档只读依赖层（site-packages 等，空=不挂）：修复
 	// --tmpfs /home 遮蔽 ~/.local 导致交付物生成链路不可用（F3）。
 	ExecDepsDir string
+	// ExecEnvRoot 分层 Python 环境根（解释器、基础层、扩展层、白名单）。
+	// 设置后，未显式给出 ExecDepsDir 时使用其中的 current 基础层。
+	ExecEnvRoot string
 	// ExecWorkspace = "overlay" 时 sandbox 档启用 S0 工作区（冻结基底+私有
 	// upper+CAS 回收）；空 = EXT-16 现状直写会话目录。
 	ExecWorkspace string
@@ -94,6 +98,8 @@ type Options struct {
 	Tier string
 	// PGPool PG 连接预算（KTD12；零值走默认）。仅 PG 档生效。
 	PGPool store.PoolOptions
+	// AdoptInstanceGuard 在数据库被替换或锁文件被重建后，显式重写守卫记录。
+	AdoptInstanceGuard bool
 }
 
 // instanceTag 稳定执行身份：tier=team 时强制 host:addr（多实例互异），
@@ -172,49 +178,11 @@ func Run(opt Options) error {
 	if opt.InsecureListen && !config.IsLoopbackListen(opt.Addr) && !resolved.AuthEnabled() {
 		log.Printf("warning: listening on %s without authentication because insecureListen is set", opt.Addr)
 	}
-	var st *store.Store
-	var err error
-	if opt.StorageDSN != "" {
-		artifacts := opt.ArtifactsDir
-		if artifacts == "" {
-			artifacts = filepath.Join(opt.DataDir, "artifacts")
-		}
-		// 共享工件（U5/KTD9）：配置了 S3 兼容对象存储时注入（多实例共享）；
-		// 未配置回落本地目录（单实例/共享卷）。凭据只经环境（不入库不入报告）。
-		blobs, berr := blobstore.NewS3FromEnv()
-		if berr != nil {
-			return fmt.Errorf("blobstore s3: %w", berr)
-		}
-		if blobs != nil {
-			log.Printf("artifacts: shared via S3-compatible object storage (prefix %q)", blobs.Prefix)
-		}
-		st, err = store.OpenPostgresWithOptions(opt.StorageDSN, artifacts, opt.PGPool, blobs)
-		if err != nil && opt.Tier == "team" {
-			// team 档拒绝就绪（R2）：PG 故障不回落 SQLite，错误必须明说。
-			return fmt.Errorf("team 档打开 PostgreSQL 失败，拒绝就绪（不回落 SQLite）: %w", err)
-		}
-	} else {
-		st, err = store.OpenSQLite(filepath.Join(opt.DataDir, "agent-system.db"))
-	}
+	st, releaseStore, err := openServiceStore(opt)
 	if err != nil {
-		return fmt.Errorf("open store: %w", err)
-	}
-	defer st.Close()
-	// U1 I3：svc 注入的服务实例身份（manifest.instance_id）与库内 marker 对齐；
-	// 未设置则跳过（兼容未接线旧调用方）。与 --instance（runs 进程标识）无关。
-	if sysID := strings.TrimSpace(os.Getenv("AGENT_SYSTEM_INSTANCE_ID")); sysID != "" {
-		dbref := strings.TrimSpace(os.Getenv("AGENT_SYSTEM_DBREF"))
-		if dbref == "" {
-			if opt.StorageDSN != "" {
-				dbref = "pg"
-			} else {
-				dbref = "sqlite"
-			}
-		}
-		if err := st.VerifySystemIdentity(sysID, dbref); err != nil {
-			return fmt.Errorf("system identity: %w", err)
-		}
+		return err
 	}
+	defer releaseStore()
 	pool := st.Pool()
 	if versions, verr := st.MigrationStatus(); verr == nil {
 		log.Printf("storage tier: %s (dialect=%s pool=%d/%d idleSec=%d lifetimeSec=%d schema=v%d)",
@@ -249,9 +217,17 @@ func Run(opt Options) error {
 	if tools.ExecBackendName() == "sandbox" {
 		log.Printf("exec tools: backend=sandbox (bwrap: no network, ro root, session-only writes, proc limit)")
 	}
+	broker, err := wireExecEnv(st, &opt)
+	if err != nil {
+		return fmt.Errorf("exec env: %w", err)
+	}
 	if opt.ExecDepsDir != "" {
 		tools.SetExecDepsDir(opt.ExecDepsDir)
 		log.Printf("exec tools: sandbox deps layer=%s", opt.ExecDepsDir)
+		if err := tools.ExecDoctor(); err != nil {
+			return fmt.Errorf("exec doctor: %w", err)
+		}
+		log.Printf("exec tools: doctor ok (docx/openpyxl/pptx)")
 	}
 	if opt.ExecWorkspace == "overlay" {
 		tools.SetWorkspaceOverlay(true)
@@ -292,16 +268,19 @@ func Run(opt Options) error {
 	if err := setSvc.SnapshotAndMigrateSecrets(); err != nil {
 		return fmt.Errorf("migrate secrets: %w", err)
 	}
-	runtime.SecretLookup = func(owner, service string) (string, bool) {
+	runtime.SecretLookup = func(owner, service string) (string, string, bool) {
 		if owner == "" {
 			owner = store.OwnerDefault
 		}
 		if v, ok := st.ActiveSecret(owner, service); ok {
-			return v, true
+			return v, "owner", true
 		}
 		// P2 受管：密钥统一迁入 secrets 表后，系统层受管密钥挂在系统行
 		//（owner=settings.OwnerSystemRow）；租户未单独配置时回退系统密钥。
-		return st.ActiveSecret(settings.OwnerSystemRow, service)
+		if v, ok := st.ActiveSecret(settings.OwnerSystemRow, service); ok {
+			return v, "system", true
+		}
+		return "", "", false
 	}
 	rag.SecretLookup = func(service, fallback string) string {
 		return runtime.LookupSecret(store.OwnerDefault, service, fallback)
@@ -380,6 +359,7 @@ func Run(opt Options) error {
 				return nil
 			},
 		}
+		cfg.Stream = runtime.GuardProjectStream(rc, "", cfg.Client.Stream)
 		tavilyNow := effNow.GetString("tools.tavily.apiKeys", "")
 		if active, ok := st.ActiveSecret(store.OwnerDefault, "tools.tavily"); ok {
 			tavilyNow = active
@@ -400,7 +380,17 @@ func Run(opt Options) error {
 		if mgr := mcpManagerFor(rawMCP, strings.TrimSpace(effNow.GetString("tools.mcp.overrides", ""))); mgr != nil {
 			cfg.MCP = mgr
 		}
-		cfg.CodeOrchestration = effNow.GetBool("runtime.codeOrchestration", false)
+		// Native squad tools do not yet expose a fail-closed result hook to the
+		// project observation outbox. Project runs therefore use the audited
+		// runCtx retrieval/tool path only; enabling these direct providers would
+		// let their results reach the next model turn without source analysis.
+		if rc.Run().ProjectID != "" {
+			cfg.Search = nil
+			cfg.Exec = nil
+			cfg.Fetch = nil
+			cfg.MCP = nil
+		}
+		cfg.CodeOrchestration = rc.Run().ProjectID == "" && effNow.GetBool("runtime.codeOrchestration", false)
 		if ask, ok := rc.(interface {
 			AskUser(card core.HITLCard) (core.HITLResponse, error)
 		}); ok {
@@ -450,6 +440,18 @@ func Run(opt Options) error {
 	subRunner := &runtime.SubLLMRunner{Prompts: promptSvc, Trace: traceFn}
 	mockRunner := &runtime.MockRunner{}
 	mgr := runmgr.New(st, b, reg, profSvc, setSvc, convRunner, subRunner, mockRunner, &runtime.MockSubagent{})
+	if broker != nil {
+		mgr.SetExecEnvDecider(func(actor, id string, allow, isolate bool) (string, error) {
+			out, err := broker.Decide(context.Background(), id, actor, false, allow, isolate)
+			if err != nil {
+				return "", err
+			}
+			return out.Detail, nil
+		})
+	}
+	authOn := resolved.AuthEnabled()
+	effectiveAccount := accountEffectiveAuthorization(st, authOn)
+	mgr.SetAccountEffectiveAuthorization(effectiveAccount, !authOn)
 	instanceID := opt.InstanceID
 	if instanceID == "" {
 		host, err := os.Hostname()
@@ -524,14 +526,25 @@ func Run(opt Options) error {
 	// fs 预留能力沙箱根：<DataDir>/workspaces/<owner>/<conversationID>/。
 	mgr.SetWorkspaceRoot(filepath.Join(opt.DataDir, "workspaces"))
 	// 中断子代理续跑（N2 WP5）：依赖转录目录（workspaceRoot）与派生请求。
-	mgr.ResumeInterruptedChildren()
+	mgr.ResumeInterruptedChildrenChecked(context.Background(), func(ctx context.Context, owner string) error {
+		valid, err := effectiveAccount(ctx, owner)
+		if err != nil {
+			return err
+		}
+		if !valid {
+			return store.ErrAccountForbidden
+		}
+		return nil
+	})
 
 	// 收件箱任务卡：事件走会话事件管道（持久化/seq/重放）；关闭即 T0 基线。
 	cardSvc := cardsvc.New(st, mgr.EmitCardEvent)
+	cardSvc.SetAccountCheckedEmitter(mgr.EmitCardEventAccountChecked)
 	cardSvc.SetProjectSharedEmitter(mgr.EmitProjectSharedCardEvent)
 	surfaceSvc := surfacesvc.New(st, mgr.EmitCardEvent)
+	surfaceSvc.SetAccountCheckedEmitter(mgr.EmitCardEventAccountChecked)
 	go func() { // 启动恢复：重发「快照已落盘、事件未发出」的待恢复投影（KTD）。
-		if n, err := surfaceSvc.RecoverPendingEvents(context.Background()); err == nil && n > 0 {
+		if n, err := surfaceSvc.RecoverPendingEventsAccountChecked(context.Background(), !authOn); err == nil && n > 0 {
 			log.Printf("surface: recovered %d pending events", n)
 		}
 	}()
@@ -554,20 +567,21 @@ func Run(opt Options) error {
 
 	// 命令总线（提案 T3/D27/D30）：四入口同源分发 + 审计 + 危险内联确认卡。
 	bus := cmdbus.New(st, cardSvc, func() time.Time { return time.Now().UTC() })
+	bus.SetEffectiveAccountGuard(func(ctx context.Context, actor string) error {
+		valid, err := effectiveAccount(ctx, actor)
+		if err != nil {
+			return err
+		}
+		if !valid {
+			return store.ErrAccountForbidden
+		}
+		return nil
+	})
+	bus.RequireAccountCheckedWrites(!authOn)
 	// U5：页面动作分发口——surfacesvc.SubmitAction 经命令总线四入口同源分发
 	//（审计信封、参数校验、DangerHigh 内联确认卡全复用；Confirmed 不透传）。
 	surfaceSvc.SetDispatcher(func(ctx context.Context, d surfacesvc.ActionDispatch) (surfacesvc.ActionOutcome, error) {
-		resp := bus.Dispatch(ctx, cmdbus.Request{ID: d.CommandID, Params: d.Params,
-			Entrance: "button", Owner: d.Owner, ConversationID: d.ConversationID})
-		state := "committed"
-		if resp.Receipt.State != "" {
-			state = string(resp.Receipt.State)
-		}
-		cardID := ""
-		if resp.Card != nil {
-			cardID = string(resp.Card.ID)
-		}
-		return surfacesvc.ActionOutcome{State: state, CardID: cardID, Receipt: resp.Receipt, Payload: resp.Payload}, nil
+		return dispatchSurfaceAction(ctx, bus, d)
 	})
 	// U3：generative-ui 工具注入闸——activation 台账关闭时命令不投影给该 owner
 	// 的模型（禁用即不注入能力；执行端守卫仍在 surfacesvc）。
@@ -597,7 +611,46 @@ func Run(opt Options) error {
 	// hostcaps：hostapi 闭包与进程内插件句柄共用的 owner 作用域能力（EXT-1 批注 1）。
 	authzSlot := &projectAuthz{}
 	projectSlot := &projectLifecycleSlot{}
-	caps := hostcaps{projects: projectSlot, st: st, pipe: pipe, set: setSvc, authz: authzSlot, surfaces: surfaceSvc}
+	workObserverSlot := &projectWorkObserverSlot{}
+	directorySlot, err := newAccountDirectorySlot(st)
+	if err != nil {
+		return err
+	}
+	contextSlot := &projectContextSlot{}
+	caps := hostcaps{projects: projectSlot, workObserver: workObserverSlot, contexts: contextSlot, projectAudit: &projectAuditSlot{}, directory: directorySlot, regulations: &regulationsSlot{}, st: st, pipe: pipe, set: setSvc, authz: authzSlot, surfaces: surfaceSvc, allowImplicitLocal: !authOn,
+		accountGuard: func(owner string) error {
+			valid, err := effectiveAccount(context.Background(), owner)
+			if err != nil {
+				return err
+			}
+			if !valid {
+				return store.ErrAccountForbidden
+			}
+			return nil
+		}}
+	bus.SetProjectWorkPreflight(func(ctx context.Context, req cmdbus.Request) error {
+		if req.Actor == "" || req.Actor != req.Owner || req.ConversationID == "" || req.AnchorMessageID == "" || req.HostProjectID == "" {
+			return fmt.Errorf("formal project command requires an authenticated conversation source")
+		}
+		conv, err := st.GetConversation(req.Owner, req.ConversationID)
+		if err != nil || string(conv.ProjectID) != req.HostProjectID {
+			return fmt.Errorf("formal project command conversation binding changed")
+		}
+		raw, err := json.Marshal(req.Params)
+		if err != nil {
+			return err
+		}
+		digest := sha256.Sum256(raw)
+		decision, err := preflightProjectMessage(ctx, st, workObserverSlot, projectSlot.work(), req.AnchorMessageID,
+			"project-command:"+req.ID, req.Owner, req.ConversationID, req.HostProjectID, req.ID, hex.EncodeToString(digest[:]))
+		if err != nil {
+			return err
+		}
+		if decision.State != extension.ProjectWorkProceed || decision.DecisionID == "" {
+			return fmt.Errorf("source analysis did not commit a proceed decision")
+		}
+		return nil
+	})
 	// EXT-13：回合内检索（knowledge_search / @knowledge 注入）与 HTTP/Host 检索面
 	// 同一适配器授权；槽为共享指针，扩展在 applyCompiled 期间注册后即生效。
 	mgr.SetSharedKnowledgeAllow(func(owner string, projectID core.ID) bool {
@@ -610,7 +663,16 @@ func Run(opt Options) error {
 	// EXT-11：公开受限 Host 工厂（下游恢复路径经 extension.NewScopedHost 重建句柄）。
 	wireScopedHostFactory(caps)
 	compiledSummary := applyCompiled(skillsRoot, bus, caps)
+	if err := requireProjectContextProvider(opt.RequireProjectContext, contextSlot); err != nil {
+		return err
+	}
 	mgr.SetProjectWorkAuthorization(projectSlot.work())
+	wireProjectWorkGate(mgr, st, caps, workObserverSlot, projectSlot.work())
+	if contextSlot.active() {
+		mgr.SetProjectContextResolver(contextSlot.resolve)
+		mgr.SetProjectEvidenceReader(contextSlot.readEvidence)
+		mgr.SetProjectContextSourceRechecker(contextSlot.recheck)
+	}
 	mgr.SetKnowledgeProjectScope(func(ctx context.Context, actor string, id core.ID) (core.ID, error) {
 		return projectSlot.resolve(ctx, caps, actor, id)
 	})
@@ -633,6 +695,9 @@ func Run(opt Options) error {
 		}
 	}
 	hostSrv.Dispatch = func(ctx context.Context, pluginID, owner, commandID string, params map[string]any) error {
+		if err := caps.accountGuard(owner); err != nil {
+			return err
+		}
 		resp := bus.Dispatch(ctx, cmdbus.Request{ID: commandID, Params: params, Entrance: "api", Actor: pluginID, Owner: owner})
 		if resp.Receipt.State == "rejected" || resp.Receipt.State == "unknown" {
 			return fmt.Errorf("%s", resp.Receipt.Reason)
@@ -652,6 +717,7 @@ func Run(opt Options) error {
 	}
 
 	srv := server.New(st, mgr, reg, profSvc, setSvc, pluginHost)
+	srv.ExecEnv = broker
 	projectSlot.wire(srv, caps)
 	// EXT-8：装载期注册的资源授权适配器注入读取入口（未注册=默认拒绝，行为不变）。
 	srv.SetProjectAuthorizer(authzSlot.Authorize)
@@ -693,7 +759,6 @@ func Run(opt Options) error {
 		return int(setSvc.Effective(store.OwnerDefault, "").GetNumber("runtime.rateLimitPerMin", 0))
 	})
 	// 认证策略（auto）：PG 档默认开启（多用户面不能裸奔）；嵌入式档默认关闭（本地单用户）。
-	authOn := resolved.AuthEnabled()
 	srv.Auth = server.NewAuthenticator(st, authOn)
 	if authOn {
 		log.Printf("auth: API key required (create with: agent-system apikey create --owner <name>)")
@@ -738,55 +803,69 @@ func Run(opt Options) error {
 	return nil
 }
 
-// CreateUserAccount CLI 建号。
-// password 空且 generatePassword=false：无初始密码，同事务签发 activate Key，返回明文 Key。
-// generatePassword=true 或显式 password：兼容旧路径（随机/给定密码 + must_change）。
-func CreateUserAccount(storageDSN, dataDir, owner, name, password string, isAdmin, openExisting, generatePassword bool) (string, error) {
-	var out string
-	err := withStoreMode(storageDSN, dataDir, openExisting, func(st *store.Store) error {
-		if password != "" || generatePassword {
-			pw := password
-			if pw == "" {
-				pw = server.RandomPassword()
-			}
-			hash, err := store.HashPassword(pw)
-			if err != nil {
-				return err
-			}
-			if err := st.CreateAccount(owner, name, hash, isAdmin); err != nil {
-				return err
-			}
-			out = pw
-			return nil
+func assertLocalAccountOwner(st *store.Store, storageDSN, dataDir string) error {
+	if storageDSN == "" {
+		storageDSN = os.Getenv("AGENT_SYSTEM_DSN")
+	}
+	if storageDSN != "" {
+		var isOwner bool
+		err := st.DB().QueryRow(`SELECT current_user = pg_get_userbyid(c.relowner) FROM pg_class c WHERE c.oid='users'::regclass`).Scan(&isOwner)
+		if err != nil || !isOwner {
+			return store.ErrAccountForbidden
 		}
-		if err := st.CreateAccount(owner, name, "", isAdmin); err != nil {
+		return nil
+	}
+	info, err := os.Stat(filepath.Join(dataDir, "agent-system.db"))
+	if err != nil {
+		return err
+	}
+	stat, ok := info.Sys().(*syscall.Stat_t)
+	if !ok || (os.Geteuid() != 0 && stat.Uid != uint32(os.Geteuid())) {
+		return store.ErrAccountForbidden
+	}
+	return nil
+}
+
+// CreateUserAccount is the local owner-only, audited pending-account path.
+// Password-bearing creation is rejected before storage is opened.
+func CreateUserAccount(storageDSN, dataDir, owner, name, password string, isAdmin, openExisting, generatePassword bool) (string, string, error) {
+	if password != "" || generatePassword {
+		return "", "", fmt.Errorf("RECOVERY_CONTRACT_REPLACED: local creation uses trusted activation only")
+	}
+	var out store.AccountOutcome
+	err := withStoreMode(storageDSN, dataDir, openExisting, func(st *store.Store) error {
+		if err := assertLocalAccountOwner(st, storageDSN, dataDir); err != nil {
 			return err
 		}
-		plain, _, err := st.IssueLoginKey(owner, store.LoginKeyPurposeActivate, "cli", 0)
+		_, next, err := st.CreateLocalPendingAccountWithAudit(owner, name, isAdmin, accountInstanceID())
+		out = next
+		return err
+	})
+	return out.Plain, out.OperationID, err
+}
+
+// IssueUserLoginKey is retained only as a rejecting compatibility entry.
+func IssueUserLoginKey(storageDSN, dataDir, owner, purpose string, openExisting, revokeAllCreds bool, ttl time.Duration) (string, error) {
+	return "", fmt.Errorf("RECOVERY_CONTRACT_REPLACED: use owner initialization or owner-confirmed recovery")
+}
+
+// InitializeAccount resumes a specific pending account. The operator identity
+// comes from the local OS UID; the target is fixed by stable user ID and CAS.
+func InitializeAccount(storageDSN, dataDir, userID string, expectedStateVersion, expectedGeneration int64) (string, string, error) {
+	var plain, owner string
+	err := withStoreMode(storageDSN, dataDir, true, func(st *store.Store) error {
+		if err := assertLocalAccountOwner(st, storageDSN, dataDir); err != nil {
+			return err
+		}
+		account, err := st.GetAccount(userID)
 		if err != nil {
 			return err
 		}
-		out = plain
-		return nil
-	})
-	return out, err
-}
-
-// IssueUserLoginKey CLI 签发激活/恢复 Key。
-func IssueUserLoginKey(storageDSN, dataDir, owner, purpose string, openExisting, revokeAllCreds bool, ttl time.Duration) (string, error) {
-	var plain string
-	err := withStoreMode(storageDSN, dataDir, openExisting, func(st *store.Store) error {
-		if revokeAllCreds {
-			if err := st.RevokeAllAPIKeys(owner); err != nil {
-				return err
-			}
-			st.DeleteUserSessions(owner, "")
-		}
-		p, _, err := st.IssueLoginKey(owner, purpose, "cli", ttl)
-		plain = p
+		out, err := st.InitializePendingAccountWithAudit(userID, expectedStateVersion, expectedGeneration, accountInstanceID())
+		plain, owner = out.Plain, account.Owner
 		return err
 	})
-	return plain, err
+	return plain, owner, err
 }
 
 // RevokeUserLoginKey CLI 撤销未使用登录 Key。
@@ -801,8 +880,13 @@ func RevokeUserLoginKey(storageDSN, dataDir, id string, openExisting bool) error
 func BootstrapAdmin(storageDSN, dataDir, owner string, openExisting bool) (string, error) {
 	var plain string
 	err := withStoreMode(storageDSN, dataDir, openExisting, func(st *store.Store) error {
-		p, err := st.BootstrapFirstAdmin(owner, owner, "cli-bootstrap")
-		plain = p
+		if err := assertLocalAccountOwner(st, storageDSN, dataDir); err != nil {
+			return err
+		}
+		outc, err := st.BootstrapFirstAdminWrite(store.AccountWrite{
+			Owner: owner, Name: owner, Actor: cliActor(), InstanceID: accountInstanceID(),
+		})
+		plain = outc.Plain
 		return err
 	})
 	return plain, err
@@ -811,19 +895,7 @@ func BootstrapAdmin(storageDSN, dataDir, owner string, openExisting bool) (strin
 // ResetUserPassword CLI 重置密码：单事务写 must_change=1、bump 认证版本、
 // 作废未用登录 Key、吊销全部会话并审计。
 func ResetUserPassword(storageDSN, dataDir, owner, password string, openExisting bool) (string, error) {
-	if password == "" {
-		password = server.RandomPassword()
-	}
-	hash, err := store.HashPassword(password)
-	if err != nil {
-		return "", err
-	}
-	if err := withStoreMode(storageDSN, dataDir, openExisting, func(st *store.Store) error {
-		return st.AdminResetUserPassword(owner, hash, "cli", "cli")
-	}); err != nil {
-		return "", err
-	}
-	return password, nil
+	return "", fmt.Errorf("RECOVERY_CONTRACT_REPLACED: administrators cannot set another user's password")
 }
 
 // ListUserAccounts CLI 用户列表。
@@ -851,83 +923,85 @@ func withIdentityStore(storageDSN, dataDir string, fn func(*store.Store) error)
 	return fn(st)
 }
 
-func withStoreMode(storageDSN, dataDir string, openExisting bool, fn func(*store.Store) error) error {
+func withStoreMode(storageDSN, dataDir string, _ bool, fn func(*store.Store) error) error {
 	var st *store.Store
 	var err error
 	// DSN 等价安全输入（KTD14）：argv 缺省时回落环境变量——凭据不落 shell history。
 	if storageDSN == "" {
 		storageDSN = os.Getenv("AGENT_SYSTEM_DSN")
 	}
+	// Account maintenance never initializes or migrates storage; the retained
+	// CLI compatibility flag cannot opt this operation into service initialization.
 	if storageDSN != "" {
-		if openExisting {
-			st, err = store.OpenExistingPostgres(storageDSN, filepath.Join(dataDir, "artifacts"))
-		} else {
-			st, err = store.OpenPostgres(storageDSN, filepath.Join(dataDir, "artifacts"))
-		}
+		st, err = store.OpenExistingPostgres(storageDSN, filepath.Join(dataDir, "artifacts"))
 	} else {
-		dbPath := filepath.Join(dataDir, "agent-system.db")
-		if openExisting {
-			st, err = store.OpenExistingSQLite(dbPath)
-		} else {
-			st, err = store.OpenSQLite(dbPath)
-		}
+		st, err = store.OpenExistingSQLite(filepath.Join(dataDir, "agent-system.db"))
 	}
+
 	if err != nil {
 		return err
 	}
 	defer st.Close()
+	if id := strings.TrimSpace(os.Getenv("AGENT_SYSTEM_INSTANCE_ID")); id != "" {
+		dbref := strings.TrimSpace(os.Getenv("AGENT_SYSTEM_DBREF"))
+		if dbref == "" {
+			if storageDSN != "" {
+				dbref = "pg"
+			} else {
+				dbref = "sqlite"
+			}
+		}
+		if err := st.VerifySystemIdentity(id, dbref); err != nil {
+			return err
+		}
+	}
 	return fn(st)
 }
 
 // CreateAPIKey 是 apikey 子命令的实现：在指定存储档上为 owner 创建密钥（明文仅打印一次）。
 func CreateAPIKey(storageDSN, dataDir, owner, name string) (string, error) {
-	var st *store.Store
-	var err error
-	if storageDSN != "" {
-		st, err = store.OpenPostgres(storageDSN, filepath.Join(dataDir, "artifacts"))
-	} else {
-		st, err = store.OpenSQLite(filepath.Join(dataDir, "agent-system.db"))
-	}
-	if err != nil {
-		return "", err
-	}
-	defer st.Close()
-	return st.CreateAPIKey(owner, name)
+	var plain string
+	err := withStoreMode(storageDSN, dataDir, true, func(st *store.Store) error {
+		if err := assertLocalAccountOwner(st, storageDSN, dataDir); err != nil {
+			return err
+		}
+		account, err := st.GetAccountByOwner(owner)
+		if err != nil {
+			return err
+		}
+		if !account.Enabled || account.InitializationState == store.InitializationPending {
+			return store.ErrAccountForbidden
+		}
+		p, e := st.CreateAPIKey(owner, name)
+		plain = p
+		return e
+	})
+	return plain, err
 }
 
 // ListAPIKeys 列出租户密钥（摘要视图）。
 func ListAPIKeys(storageDSN, dataDir, owner string) ([]store.APIKeyInfo, error) {
-	var st *store.Store
-	var err error
-	if storageDSN != "" {
-		st, err = store.OpenPostgres(storageDSN, filepath.Join(dataDir, "artifacts"))
-	} else {
-		st, err = store.OpenSQLite(filepath.Join(dataDir, "agent-system.db"))
-	}
-	if err != nil {
-		return nil, err
-	}
-	defer st.Close()
-	if _, err := st.GetUser(owner); err != nil {
-		return nil, fmt.Errorf("owner %q 不存在（先 apikey create 创建）", owner)
-	}
-	return st.ListAPIKeys(owner)
+	var out []store.APIKeyInfo
+	err := withStoreMode(storageDSN, dataDir, true, func(st *store.Store) error {
+		if _, err := st.GetUser(owner); err != nil {
+			return fmt.Errorf("owner %q 不存在（先建立账号）", owner)
+		}
+		var e error
+		out, e = st.ListAPIKeys(owner)
+		return e
+	})
+	return out, err
 }
 
 // RevokeAPIKey 撤销指定名称密钥。
 func RevokeAPIKey(storageDSN, dataDir, owner, name string) (bool, error) {
-	var st *store.Store
-	var err error
-	if storageDSN != "" {
-		st, err = store.OpenPostgres(storageDSN, filepath.Join(dataDir, "artifacts"))
-	} else {
-		st, err = store.OpenSQLite(filepath.Join(dataDir, "agent-system.db"))
-	}
-	if err != nil {
-		return false, err
-	}
-	defer st.Close()
-	return st.RevokeAPIKeyByName(owner, name)
+	var ok bool
+	err := withStoreMode(storageDSN, dataDir, true, func(st *store.Store) error {
+		var e error
+		ok, e = st.RevokeAPIKeyByName(owner, name)
+		return e
+	})
+	return ok, err
 }
 
 // EnsureSystemIdentity CLI：显式建立库内服务身份（svc init / I2→I3 引导）。
@@ -956,6 +1030,14 @@ func VerifySystemIdentity(storageDSN, dataDir, instanceID, dbref string) (int, e
 	return schemaVersion, err
 }
 
+func cliActor() string {
+	return fmt.Sprintf("%d", os.Getuid())
+}
+
+func accountInstanceID() string {
+	return strings.TrimSpace(os.Getenv("AGENT_SYSTEM_INSTANCE_ID"))
+}
+
 // cachedInt 带短 TTL 的整型缓存读（限流值热读取免打库）。
 func cachedInt(ttl time.Duration, fn func() int) func() int {
 	var mu sync.Mutex

internal/app/compiled.go

@@ -64,10 +64,12 @@ func (r pluginRegistry) AddCommandHandler(spec json.RawMessage, h extension.Hand
 		return fmt.Errorf("extension: command spec: %w", err)
 	}
 	return r.bus.RegisterPluginCommand(s, func(ctx context.Context, req cmdbus.Request) (any, error) {
-		host := inprocHost{caps: r.caps, pluginID: r.pluginID, owner: req.Owner, actor: req.Actor}
+		host := requestBoundHost{inprocHost{caps: r.caps, pluginID: r.pluginID, owner: req.Owner, actor: req.Actor,
+			conversationID: core.ID(req.ConversationID), hostProjectID: core.ID(req.HostProjectID),
+			entrance: req.Entrance, humanGrant: req.HumanGrant}}
 		return h(ctx, host, extension.Request{
 			ID: req.ID, Params: req.Params, Entrance: req.Entrance,
-			Actor: req.Actor, Owner: req.Owner, ConversationID: req.ConversationID,
+			Actor: req.Actor, Owner: req.Owner, ConversationID: req.ConversationID, OperationID: req.OperationID,
 			HostProjectID: req.HostProjectID,
 		})
 	})
@@ -116,6 +118,28 @@ func (r compiledRegistry) RegisterResourceAuthorizer(extension.ResourceAuthorize
 	return errors.New("extension: declarative plugins cannot register resource authorizers")
 }
 
+func (r compiledRegistry) RegisterAccountDirectoryScopeResolver(extension.AccountDirectoryScopeResolver) error {
+	return errors.New("extension: declarative plugins cannot register account directory authorization")
+}
+
+func (r pluginRegistry) RegisterAccountDirectoryScopeResolver(fn extension.AccountDirectoryScopeResolver) error {
+	if r.pluginID != "rdm" || r.caps.directory == nil {
+		return errors.New("extension: account directory resolver requires trusted RDM registration")
+	}
+	return r.caps.directory.register(r.pluginID, fn)
+}
+
+func (r compiledRegistry) RegisterRegulationsProvider(extension.RegulationsProvider) error {
+	return errors.New("extension: declarative plugins cannot register a regulations provider")
+}
+
+func (r pluginRegistry) RegisterRegulationsProvider(p extension.RegulationsProvider) error {
+	if r.caps.regulations == nil {
+		return errors.New("extension: regulations provider registration unavailable")
+	}
+	return r.caps.regulations.register(r.pluginID, p)
+}
+
 // RegisterResourceAuthorizer 进程内扩展（EXT-1）：填充 EXT-8 适配器槽
 // （hostcaps.authz 共享指针；首个注册者生效，组合根已装配进 Server/runmgr）。
 // 此前 pluginRegistry 未覆盖该方法——进程内插件注册适配器会命中声明式分支的
@@ -150,6 +174,22 @@ type recordRegistry struct {
 	sum *server.CompiledPlugin
 }
 
+func (r recordRegistry) RegisterAccountDirectoryScopeResolver(fn extension.AccountDirectoryScopeResolver) error {
+	registrar, ok := r.Registry.(extension.AccountDirectoryRegistrar)
+	if !ok {
+		return errors.New("extension: account directory registration unavailable")
+	}
+	return registrar.RegisterAccountDirectoryScopeResolver(fn)
+}
+
+func (r recordRegistry) RegisterRegulationsProvider(p extension.RegulationsProvider) error {
+	registrar, ok := r.Registry.(extension.RegulationsRegistrar)
+	if !ok {
+		return errors.New("extension: regulations provider registration unavailable")
+	}
+	return registrar.RegisterRegulationsProvider(p)
+}
+
 func (r recordRegistry) AddCommand(spec json.RawMessage) error {
 	if err := r.Registry.AddCommand(spec); err != nil {
 		return err

internal/app/delegated_project_projection.go

@@ -0,0 +1,122 @@
+package app
+
+import (
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+// requestBoundHost is created only for a current lifecycle or command request.
+// A reconstructed global ScopedHost is a plain inprocHost and cannot expose
+// the delegated projection method by type assertion.
+type requestBoundHost struct{ inprocHost }
+
+// ProjectProjectionForCreator only derives from a live request Host of the
+// registered RDM provider. The operator is inherited from that Host, never
+// accepted as a caller-supplied field. RDM's project.settings decision remains
+// its own domain authority; this capability fences the Backend projection.
+func (bound requestBoundHost) ProjectProjectionForCreator(creator, projectID string) (extension.ProjectHost, error) {
+	h := bound.inprocHost
+	if h.actor == "" || h.actor != h.owner || h.pluginID != "rdm" ||
+		h.caps.projects == nil || h.caps.st == nil || creator == "" || projectID == "" {
+		return nil, store.ErrAccountForbidden
+	}
+	slot := h.caps.projects
+	slot.mu.Lock()
+	registered := slot.provider != nil && slot.holder == h.pluginID
+	slot.mu.Unlock()
+	if !registered {
+		return nil, store.ErrAccountForbidden
+	}
+	if err := h.requireEffective(); err != nil {
+		return nil, err
+	}
+	if h.caps.accountGuard != nil {
+		if err := h.caps.accountGuard(creator); err != nil {
+			return nil, err
+		}
+	}
+	project, err := h.caps.st.ProjectMetadata(projectID)
+	if err != nil {
+		return nil, err
+	}
+	if string(project.Owner) != creator || string(project.ID) != projectID {
+		return nil, store.ErrNotFound
+	}
+	return delegatedProjectProjection{caps: h.caps, pluginID: h.pluginID,
+		actor: h.actor, creator: creator, projectID: projectID}, nil
+}
+
+// delegatedProjectProjection exposes only ProjectHost, and every method is
+// confined to the bound project. It cannot be cast to the broader Host.
+type delegatedProjectProjection struct {
+	caps      hostcaps
+	pluginID  string
+	actor     string
+	creator   string
+	projectID string
+}
+
+var _ extension.ProjectHost = delegatedProjectProjection{}
+
+func (p delegatedProjectProjection) Owner() string { return p.creator }
+
+func (p delegatedProjectProjection) check() error {
+	if p.caps.accountGuard == nil {
+		return nil
+	}
+	if err := p.caps.accountGuard(p.actor); err != nil {
+		return err
+	}
+	return p.caps.accountGuard(p.creator)
+}
+
+func (p delegatedProjectProjection) target(id string) error {
+	if id == "" || id != p.projectID {
+		return store.ErrNotFound
+	}
+	return nil
+}
+
+func (p delegatedProjectProjection) OwnedProjects() ([]core.Project, error) {
+	return nil, store.ErrAccountForbidden
+}
+
+func (p delegatedProjectProjection) OwnedProject(string) (core.Project, error) {
+	return core.Project{}, store.ErrAccountForbidden
+}
+
+func (p delegatedProjectProjection) EnsureProject(string, string) (core.Project, error) {
+	return core.Project{}, store.ErrAccountForbidden
+}
+
+func (p delegatedProjectProjection) ProjectMetadata(id string) (core.Project, error) {
+	if err := p.target(id); err != nil {
+		return core.Project{}, err
+	}
+	if err := p.check(); err != nil {
+		return core.Project{}, err
+	}
+	view := inprocHost{caps: p.caps, pluginID: p.pluginID, owner: p.creator, actor: p.actor}
+	return view.ProjectMetadata(id)
+}
+
+func (p delegatedProjectProjection) ProjectNameAvailable(name, exceptID string) (bool, error) {
+	if err := p.target(exceptID); err != nil {
+		return false, err
+	}
+	if err := p.check(); err != nil {
+		return false, err
+	}
+	return p.caps.st.ProjectNameAvailable(name, exceptID)
+}
+
+func (p delegatedProjectProjection) RenameOwnedProject(id, name string) (core.Project, error) {
+	if err := p.target(id); err != nil {
+		return core.Project{}, err
+	}
+	if err := p.check(); err != nil {
+		return core.Project{}, err
+	}
+	return p.caps.st.RenameOwnedProjectAccountChecked(p.actor, p.creator, p.projectID, name, p.caps.allowImplicitLocal)
+}

internal/app/delegated_project_projection_entry_test.go

@@ -0,0 +1,108 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	agentcommand "agent-command"
+	"agent-system-backend/internal/cmdbus"
+	"agent-system-backend/internal/server"
+	"agent-system-backend/internal/settings"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+func TestDelegatedProjectionIsBoundAtHTTPAndCommandEntries(t *testing.T) {
+	st, err := store.OpenSQLite(t.TempDir() + "/entries.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	for _, owner := range []string{"alice", "bob"} {
+		if err := st.EnsureUser(owner, ""); err != nil {
+			t.Fatal(err)
+		}
+	}
+	httpProject, err := st.CreateProject("alice", "HTTP original")
+	if err != nil {
+		t.Fatal(err)
+	}
+	commandProject, err := st.CreateProject("alice", "Command original")
+	if err != nil {
+		t.Fatal(err)
+	}
+	check := func(owner string) error {
+		state, err := st.GetUserAuthState(owner)
+		if err != nil {
+			return err
+		}
+		if !state.Enabled {
+			return store.ErrAccountForbidden
+		}
+		return nil
+	}
+	projectFromRequest := func(h extension.Host, id, name string) (core.Project, error) {
+		bound, ok := h.(extension.DelegatedProjectProjectionHost)
+		if !ok {
+			return core.Project{}, errors.New("request Host lost operator-bound projection")
+		}
+		projection, err := bound.ProjectProjectionForCreator("alice", id)
+		if err != nil {
+			return core.Project{}, err
+		}
+		return projection.RenameOwnedProject(id, name)
+	}
+	slot := &projectLifecycleSlot{}
+	caps := hostcaps{st: st, set: settings.NewService(st), projects: slot, accountGuard: check}
+	provider := completeLifecycle()
+	provider.Rename = func(_ context.Context, h extension.Host, id, name string) (core.Project, error) {
+		return projectFromRequest(h, id, name)
+	}
+	if err := (pluginRegistry{pluginID: "rdm", caps: caps}).RegisterProjectLifecycle(provider); err != nil {
+		t.Fatal(err)
+	}
+	srv := server.New(st, nil, nil, nil, caps.set, nil)
+	srv.Auth = server.NewAuthenticator(st, true)
+	slot.wire(srv, caps)
+	key, err := st.CreateAPIKey("bob", "delegate-entry")
+	if err != nil {
+		t.Fatal(err)
+	}
+	req := httptest.NewRequest(http.MethodPatch, "/api/projects/"+string(httpProject.ID), strings.NewReader(`{"name":"via HTTP"}`))
+	req.Header.Set("Authorization", "Bearer "+key)
+	rec := httptest.NewRecorder()
+	srv.Handler().ServeHTTP(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("HTTP lifecycle rename: status=%d body=%s", rec.Code, rec.Body.String())
+	}
+	bus := cmdbus.New(st, nil, nil)
+	bus.SetEffectiveAccountGuard(func(_ context.Context, owner string) error { return check(owner) })
+	bus.RequireAccountCheckedWrites(false)
+	reg := pluginRegistry{pluginID: "rdm", caps: caps, compiledRegistry: compiledRegistry{bus: bus}}
+	err = reg.AddCommandHandler(json.RawMessage(`{"id":"rdm.fixture.rename","title":"Rename"}`),
+		func(_ context.Context, h extension.Host, req extension.Request) (any, error) {
+			id, _ := req.Params["id"].(string)
+			name, _ := req.Params["name"].(string)
+			return projectFromRequest(h, id, name)
+		})
+	if err != nil {
+		t.Fatal(err)
+	}
+	result := bus.Dispatch(context.Background(), cmdbus.Request{ID: "rdm.fixture.rename", Owner: "bob", Actor: "bob",
+		Params: map[string]any{"id": string(commandProject.ID), "name": "via command"}})
+	if result.Receipt.State != agentcommand.StateCommitted {
+		t.Fatalf("command rename: %+v", result.Receipt)
+	}
+	for _, tc := range []struct{ id, want string }{{string(httpProject.ID), "via HTTP"}, {string(commandProject.ID), "via command"}} {
+		project, err := st.ProjectMetadata(tc.id)
+		if err != nil || project.Name != tc.want {
+			t.Fatalf("entry %s did not reach bound projection: %+v %v", tc.id, project, err)
+		}
+	}
+}

internal/app/delegated_project_projection_pg_test.go

@@ -0,0 +1,135 @@
+package app
+
+import (
+	"bytes"
+	"errors"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"agent-system-backend/internal/store"
+)
+
+// Two processes share one isolated PostgreSQL schema. The child has already
+// accepted a stale early account read when the parent commits disable; only
+// the final Backend transaction can stop the physical rename.
+func TestPGDelegatedProjectionDisableAcrossProcesses(t *testing.T) {
+	baseDSN := os.Getenv("AGENT_PG_TEST_DSN")
+	if baseDSN == "" {
+		t.Skip("isolated PostgreSQL DSN required")
+	}
+	separator := "?"
+	if strings.Contains(baseDSN, "?") {
+		separator = "&"
+	}
+	if os.Getenv("IAM_U3_DELEGATE_CHILD") == "1" {
+		dsn := baseDSN + separator + "search_path=" + os.Getenv("IAM_U3_DELEGATE_SCHEMA") + ",public"
+		st, err := store.OpenExistingPostgres(dsn, filepath.Join(t.TempDir(), "artifacts"))
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer st.Close()
+		var bobChecks atomic.Int32
+		check := func(owner string) error {
+			state, err := st.GetUserAuthState(owner)
+			if err != nil {
+				return err
+			}
+			if !state.Enabled {
+				return store.ErrAccountForbidden
+			}
+			if owner == "bob" && bobChecks.Add(1) == 2 {
+				if err := os.WriteFile(os.Getenv("IAM_U3_DELEGATE_READY"), []byte("ready"), 0o600); err != nil {
+					return err
+				}
+				deadline := time.Now().Add(5 * time.Second)
+				for {
+					if _, err := os.Stat(os.Getenv("IAM_U3_DELEGATE_RELEASE")); err == nil {
+						break
+					}
+					if time.Now().After(deadline) {
+						return errors.New("parent did not release paused child")
+					}
+					time.Sleep(10 * time.Millisecond)
+				}
+			}
+			return nil
+		}
+		slot := &projectLifecycleSlot{}
+		caps := hostcaps{st: st, projects: slot, accountGuard: check}
+		if err := (pluginRegistry{pluginID: "rdm", caps: caps}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
+			t.Fatal(err)
+		}
+		host := requestBoundHost{inprocHost{caps: caps, pluginID: "rdm", owner: "bob", actor: "bob"}}
+		projection, err := host.ProjectProjectionForCreator("alice", os.Getenv("IAM_U3_DELEGATE_PROJECT"))
+		if err != nil {
+			t.Fatal(err)
+		}
+		if _, err := projection.RenameOwnedProject(os.Getenv("IAM_U3_DELEGATE_PROJECT"), "late"); !errors.Is(err, store.ErrAccountForbidden) {
+			t.Fatalf("late physical rename was not fenced: %v", err)
+		}
+		return
+	}
+	st := openDirectoryTestStore(t)
+	if err := st.EnsureSystemIdentity("u3-delegate-two-process", "pg"); err != nil {
+		t.Fatal(err)
+	}
+	for _, account := range []struct {
+		owner string
+		admin bool
+	}{{"admin", true}, {"alice", false}, {"bob", false}} {
+		if err := st.CreateAccount(account.owner, "", "", account.admin); err != nil {
+			t.Fatal(err)
+		}
+	}
+	project, err := st.CreateProject("alice", "before")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var schema string
+	if err := st.DB().QueryRow(`SELECT current_schema()`).Scan(&schema); err != nil {
+		t.Fatal(err)
+	}
+	barrier := t.TempDir()
+	ready, release := filepath.Join(barrier, "ready"), filepath.Join(barrier, "release")
+	cmd := exec.Command(os.Args[0], "-test.run=^TestPGDelegatedProjectionDisableAcrossProcesses$")
+	cmd.Env = append(os.Environ(), "IAM_U3_DELEGATE_CHILD=1", "IAM_U3_DELEGATE_SCHEMA="+schema,
+		"IAM_U3_DELEGATE_PROJECT="+string(project.ID), "IAM_U3_DELEGATE_READY="+ready, "IAM_U3_DELEGATE_RELEASE="+release)
+	var output bytes.Buffer
+	cmd.Stdout, cmd.Stderr = &output, &output
+	if err := cmd.Start(); err != nil {
+		t.Fatal(err)
+	}
+	deadline := time.Now().Add(5 * time.Second)
+	for {
+		if _, err := os.Stat(ready); err == nil {
+			break
+		}
+		if time.Now().After(deadline) {
+			_ = cmd.Process.Kill()
+			t.Fatalf("child did not reach stale early check: %s", strings.ReplaceAll(output.String(), baseDSN, "[REDACTED]"))
+		}
+		time.Sleep(10 * time.Millisecond)
+	}
+	bob, err := st.GetAccountByOwner("bob")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.SetAccountEnabled("admin", bob.ID, bob.StateVersion, false); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(release, []byte("release"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if err := cmd.Wait(); err != nil {
+		t.Fatalf("child failed: %v: %s", err, strings.ReplaceAll(output.String(), baseDSN, "[REDACTED]"))
+	}
+	got, err := st.ProjectMetadata(string(project.ID))
+	if err != nil || got.Name != "before" {
+		t.Fatalf("disabled operator's project rename persisted: %+v %v", got, err)
+	}
+}

internal/app/execenv_wire.go

@@ -0,0 +1,132 @@
+package app
+
+import (
+	"agent-system-backend/internal/execenv"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/internal/tools"
+	core "agent-system-core"
+)
+
+// envStore 把 store 的行类型适配成 execenv.Store。
+type envStore struct{ *store.Store }
+
+func (s envStore) InsertExecEnvRequest(r execenv.Request) error {
+	return s.Store.InsertExecEnvRequest(store.ExecEnvRequest{
+		ID: r.ID, ConversationID: r.ConversationID, Owner: r.Owner, Spec: r.Spec,
+		Reason: r.Reason, Status: r.Status, LayerID: r.LayerID, Detail: r.Detail,
+		Approver: r.Approver, CreatedAt: r.CreatedAt, UpdatedAt: r.UpdatedAt,
+	})
+}
+
+func (s envStore) GetExecEnvRequest(id string) (execenv.Request, error) {
+	r, err := s.Store.GetExecEnvRequest(id)
+	if err != nil {
+		return execenv.Request{}, err
+	}
+	return execenv.Request{
+		ID: r.ID, ConversationID: r.ConversationID, Owner: r.Owner, Spec: r.Spec,
+		Reason: r.Reason, Status: r.Status, LayerID: r.LayerID, Detail: r.Detail,
+		Approver: r.Approver, CreatedAt: r.CreatedAt, UpdatedAt: r.UpdatedAt,
+	}, nil
+}
+
+func (s envStore) ListExecEnvRequests(conversationID string, limit int) ([]execenv.Request, error) {
+	rows, err := s.Store.ListExecEnvRequests(conversationID, limit)
+	if err != nil {
+		return nil, err
+	}
+	out := make([]execenv.Request, 0, len(rows))
+	for _, r := range rows {
+		out = append(out, execenv.Request{
+			ID: r.ID, ConversationID: r.ConversationID, Owner: r.Owner, Spec: r.Spec,
+			Reason: r.Reason, Status: r.Status, LayerID: r.LayerID, Detail: r.Detail,
+			Approver: r.Approver, CreatedAt: r.CreatedAt, UpdatedAt: r.UpdatedAt,
+		})
+	}
+	return out, nil
+}
+
+func (s envStore) UpdateExecEnvRequest(id, status, layerID, detail, approver string) error {
+	return s.Store.UpdateExecEnvRequest(id, status, layerID, detail, approver)
+}
+
+func (s envStore) GetExecEnvBinding(conversationID string) (execenv.Binding, error) {
+	b, err := s.Store.GetExecEnvBinding(conversationID)
+	if err != nil {
+		return execenv.Binding{}, err
+	}
+	return execenv.Binding{
+		ConversationID: b.ConversationID, BaseID: b.BaseID, Extensions: b.Layers,
+		Isolated: b.Isolated, UpdatedAt: b.UpdatedAt,
+	}, nil
+}
+
+func (s envStore) PutExecEnvBinding(b execenv.Binding) error {
+	return s.Store.PutExecEnvBinding(store.ExecEnvBinding{
+		ConversationID: b.ConversationID, BaseID: b.BaseID, Layers: b.Extensions,
+		Isolated: b.Isolated, UpdatedAt: b.UpdatedAt,
+	})
+}
+
+func (s envStore) ListExecEnvBindings() ([]execenv.Binding, error) {
+	rows, err := s.Store.ListExecEnvBindings()
+	if err != nil {
+		return nil, err
+	}
+	out := make([]execenv.Binding, 0, len(rows))
+	for _, b := range rows {
+		out = append(out, execenv.Binding{
+			ConversationID: b.ConversationID, BaseID: b.BaseID, Extensions: b.Layers,
+			Isolated: b.Isolated, UpdatedAt: b.UpdatedAt,
+		})
+	}
+	return out, nil
+}
+
+func (s envStore) InsertExecEnvAudit(owner, action, actor, target, outcome, entry string) error {
+	return s.Store.InsertExecEnvAudit(owner, action, actor, target, outcome, entry)
+}
+
+// wireExecEnv 打开环境根，把基础层交给执行器，并接上申请代理。
+// 两者都空时不改变现状（解释器仍固定为 /usr/bin/python3，避免 linuxbrew 路径）。
+func wireExecEnv(st *store.Store, opt *Options) (*execenv.Broker, error) {
+	if opt.ExecEnvRoot == "" {
+		return nil, nil
+	}
+	root, err := execenv.Open(opt.ExecEnvRoot)
+	if err != nil {
+		return nil, err
+	}
+	if bin, ok := root.PythonBin(); ok {
+		tools.SetExecPython(bin, root.PythonPrefix())
+	}
+	tools.SetExecShimDir(root.BinDir())
+	if opt.ExecDepsDir == "" {
+		if id, err := root.CurrentBase(); err != nil {
+			return nil, err
+		} else if id != "" {
+			opt.ExecDepsDir = root.LayerDir(id)
+		}
+	}
+	py, _ := root.PythonBin()
+	if py == "" {
+		py = "/usr/bin/python3"
+	}
+	broker := execenv.NewBroker(root, envStore{st}, execenv.Pip{Python: py})
+	tools.SetEnvBroker(broker)
+	tools.SetExecLayers(broker.LayersFor)
+	tools.SetEnvApproval(func(owner, conv, requestID, detail string) error {
+		card := &core.HITLCard{
+			ID: core.ID("hitl_" + requestID), RunID: "execenv", ConversationID: core.ID(conv),
+			Question: "批准为这个会话安装额外的 Python 包？", Kind: core.HITLKindChoice,
+			Detail: "exec-env:" + requestID + "\n" + detail,
+			Choices: []core.HITLChoice{
+				{ID: "approve", Label: "批准", Description: detail, Impact: "只挂到这个会话，不改变基础层", Recommended: true},
+				{ID: "isolate", Label: "批准并使用隔离层", Description: "与基础层版本冲突时用这份独立闭包", Impact: "这个会话不再叠基础层"},
+				{ID: "reject", Label: "拒绝", Description: "不安装", Impact: "会话保持现状"},
+			},
+		}
+		return st.SaveHITLCard(owner, card)
+	})
+	return broker, nil
+}

internal/app/ext9_publish_test.go

@@ -23,6 +23,9 @@ func newExt9Host(t *testing.T) (interface {
 		t.Fatal(err)
 	}
 	t.Cleanup(func() { st.Close() })
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
 	set := settings.NewService(st)
 	pipe := rag.NewPipeline(st, set, nil, nil)
 	h := inprocHost{caps: hostcaps{st: st, pipe: pipe, set: set}, pluginID: "rdm", owner: "alice"}

internal/app/guard_test.go

@@ -0,0 +1,201 @@
+//go:build unix
+
+package app
+
+import (
+	"errors"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"agent-system-backend/internal/instanceguard"
+	"agent-system-backend/internal/store"
+	core "agent-system-core"
+)
+
+func TestSecondProcessRejectedBeforeOpen(t *testing.T) {
+	if os.Getenv("U8_APP_ROLE") == "hold" {
+		holdService(t)
+		return
+	}
+	dir := t.TempDir()
+	ready := filepath.Join(dir, "ready")
+	cmd := exec.Command(os.Args[0], "-test.run=TestSecondProcessRejectedBeforeOpen")
+	cmd.Env = append(os.Environ(), "U8_APP_ROLE=hold", "U8_APP_DIR="+dir, "U8_APP_READY="+ready)
+	cmd.Dir = t.TempDir()
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Start(); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		if cmd.Process != nil {
+			_ = cmd.Process.Kill()
+			_, _ = cmd.Process.Wait()
+		}
+	})
+	waitReady(t, ready)
+	_, _, err := openServiceStore(Options{DataDir: dir, Addr: ":1"})
+	if !errors.Is(err, instanceguard.ErrBusy) {
+		t.Fatalf("second open: %v", err)
+	}
+	if err := Migrate(Options{DataDir: dir}); !errors.Is(err, instanceguard.ErrBusy) {
+		t.Fatalf("migrate while held: %v", err)
+	}
+	cli, err := store.OpenExistingSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	run, err := cli.GetRunByID("run_u8_hold")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if run.Status != core.RunWaitingHITL {
+		t.Fatalf("run changed while second process was refused: %s", run.Status)
+	}
+	if _, err := cli.CreateProject("owner", "short"); err != nil {
+		t.Fatalf("account-style write while service holds the guard: %v", err)
+	}
+	if err := cli.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if err := cmd.Process.Kill(); err != nil {
+		t.Fatal(err)
+	}
+	_, _ = cmd.Process.Wait()
+	st, release, err := openServiceStore(Options{DataDir: dir, Addr: ":2"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer release()
+	run, err = st.GetRunByID("run_u8_hold")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if run.Status != core.RunWaitingHITL {
+		t.Fatalf("restart reconciled a run the second process never opened: %s", run.Status)
+	}
+}
+
+func TestCopiedBinaryStillSharesGuard(t *testing.T) {
+	if os.Getenv("U8_APP_ROLE") == "copy-hold" {
+		holdService(t)
+		return
+	}
+	bin, err := os.Executable()
+	if err != nil {
+		t.Fatal(err)
+	}
+	copyPath := filepath.Join(t.TempDir(), "agent-system-test-copy")
+	raw, err := os.ReadFile(bin)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(copyPath, raw, 0o700); err != nil {
+		t.Fatal(err)
+	}
+	dir := t.TempDir()
+	ready := filepath.Join(dir, "ready")
+	cmd := exec.Command(copyPath, "-test.run=TestCopiedBinaryStillSharesGuard")
+	cmd.Env = append(os.Environ(), "U8_APP_ROLE=copy-hold", "U8_APP_DIR="+dir, "U8_APP_READY="+ready)
+	cmd.Dir = t.TempDir()
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Start(); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		if cmd.Process != nil {
+			_ = cmd.Process.Kill()
+			_, _ = cmd.Process.Wait()
+		}
+	})
+	waitReady(t, ready)
+	if _, _, err := openServiceStore(Options{DataDir: dir}); !errors.Is(err, instanceguard.ErrBusy) {
+		t.Fatalf("copied binary: %v", err)
+	}
+}
+
+func holdService(t *testing.T) {
+	t.Helper()
+	dir := os.Getenv("U8_APP_DIR")
+	st, _, err := openServiceStore(Options{DataDir: dir})
+	if err != nil {
+		t.Fatal(err)
+	}
+	run := &core.Run{
+		ID: "run_u8_hold", ConversationID: "c", ProjectID: "p", Owner: "o",
+		Kind: core.RunConversation, Status: core.RunWaitingHITL,
+	}
+	if err := st.CreateRun(run); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(os.Getenv("U8_APP_READY"), []byte("ready"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(30 * time.Second)
+}
+
+func waitReady(t *testing.T, ready string) {
+	t.Helper()
+	deadline := time.Now().Add(20 * time.Second)
+	for time.Now().Before(deadline) {
+		if _, err := os.Stat(ready); err == nil {
+			return
+		}
+		time.Sleep(20 * time.Millisecond)
+	}
+	t.Fatal("child did not become ready")
+}
+
+func TestAdoptDoesNotCreateMissingDatabase(t *testing.T) {
+	dir := t.TempDir()
+	_, release, err := openServiceStore(Options{DataDir: dir})
+	if err != nil {
+		t.Fatal(err)
+	}
+	release()
+	db := filepath.Join(dir, "agent-system.db")
+	if err := os.Remove(db); err != nil {
+		t.Fatal(err)
+	}
+	_, _, err = openServiceStore(Options{DataDir: dir, AdoptInstanceGuard: true})
+	if !errors.Is(err, instanceguard.ErrDBMissing) {
+		t.Fatalf("adopt missing: %v", err)
+	}
+	if _, err := os.Stat(db); !os.IsNotExist(err) {
+		t.Fatalf("adopt created a database: %v", err)
+	}
+}
+
+func TestIdentityFailureDoesNotStick(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("AGENT_SYSTEM_INSTANCE_ID", "wrong")
+	if _, _, err := openServiceStore(Options{DataDir: dir}); err == nil {
+		t.Fatal("missing identity row was accepted")
+	}
+	t.Setenv("AGENT_SYSTEM_INSTANCE_ID", "")
+	st, err := store.OpenSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	marker, ok, err := st.LoadInstanceGuard()
+	if err != nil || ok || marker.InstanceID != "" {
+		t.Fatalf("failed start wrote a guard id: ok=%v id=%q err=%v", ok, marker.InstanceID, err)
+	}
+	if err := st.EnsureSystemIdentity("right", "sqlite"); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.Close(); err != nil {
+		t.Fatal(err)
+	}
+	t.Setenv("AGENT_SYSTEM_INSTANCE_ID", "right")
+	opened, release, err := openServiceStore(Options{DataDir: dir})
+	if err != nil {
+		t.Fatal(err)
+	}
+	release()
+	_ = opened
+}

internal/app/hostcaps.go

@@ -7,7 +7,9 @@ import (
 	"sort"
 	"strings"
 	"sync"
+	"time"
 
+	"agent-system-backend/internal/cmdbus"
 	"agent-system-backend/internal/ingest"
 	"agent-system-backend/internal/rag"
 	"agent-system-backend/internal/runtime"
@@ -21,12 +23,20 @@ import (
 // 同一实现同时服务 hostapi.Server 的 Search/Complete 闭包与进程内
 // inprocHost（EXT-1 批注 1：复用现有 owner 作用域函数，不新造句柄）。
 type hostcaps struct {
-	projects *projectLifecycleSlot
-	st       *store.Store
-	pipe     *rag.Pipeline
-	set      *settings.Service
-	authz    *projectAuthz       // EXT-8 适配器槽（共享指针；首个注册者生效）
-	surfaces *surfacesvc.Service // EXT-17 Surface 能力槽（nil = 未装配，明确拒绝）
+	projects           *projectLifecycleSlot
+	workObserver       *projectWorkObserverSlot
+	directory          *accountDirectorySlot
+	contexts           *projectContextSlot
+	projectAudit       *projectAuditSlot
+	regulations        *regulationsSlot // EXT-20 法规提供方槽（共享指针；nil/未注册＝不可用）
+	accountGuard       func(string) error
+	allowImplicitLocal bool
+	st                 *store.Store
+	pipe               *rag.Pipeline
+	set                *settings.Service
+	authz              *projectAuthz       // EXT-8 适配器槽（共享指针；首个注册者生效）
+	surfaces           *surfacesvc.Service // EXT-17 Surface 能力槽（nil = 未装配，明确拒绝）
+	now                func() time.Time
 }
 
 // projectAuthz EXT-8 资源授权适配器槽：进程内扩展注册，组合根装配进 Server。
@@ -109,6 +119,11 @@ type sharedRetriever interface {
 }
 
 func (c hostcaps) search(ctx context.Context, owner string, projectID core.ID, text string, topK int) ([]core.RetrievalHit, error) {
+	if c.accountGuard != nil {
+		if err := c.accountGuard(owner); err != nil {
+			return nil, err
+		}
+	}
 	q := core.RetrievalQuery{ProjectID: projectID, Text: text, TopK: topK}
 	if c.projects != nil && projectID != "" {
 		id, err := c.projects.resolve(ctx, c, owner, projectID)
@@ -143,10 +158,23 @@ func (c hostcaps) searchDefault(ctx context.Context, owner, text string) ([]core
 
 // complete 经基座 LLM 路由补全（owner 的模型配置生效；未配置报错）。
 func (c hostcaps) complete(ctx context.Context, owner, prompt string) (string, error) {
+	if c.accountGuard != nil {
+		if err := c.accountGuard(owner); err != nil {
+			return "", err
+		}
+	}
 	route := runtime.ResolveChatModel(core.AgentProfile{}, c.set.Effective(owner, ""))
 	if route.Model == "" || route.Base == "" {
 		return "", fmt.Errorf("llm route not configured")
 	}
+	if err := ctx.Err(); err != nil {
+		return "", err
+	}
+	if c.accountGuard != nil {
+		if err := c.accountGuard(owner); err != nil {
+			return "", err
+		}
+	}
 	return completeChat(ctx, route.Base, route.Key, route.Model, prompt)
 }
 
@@ -170,10 +198,21 @@ func (c hostcaps) parse(ctx context.Context, filename, mime string, content []by
 // actor 是本次分发主体（通常等于 owner）；AdminProvider 能力经 actor 查询
 // （EXT-18）。非 dispatch 上下文（EXT-11 scoped host）actor 为空——IsAdmin 恒 false。
 type inprocHost struct {
-	caps     hostcaps
-	pluginID string
-	owner    string
-	actor    string // EXT-18：分发主体（空＝非 dispatch 上下文）
+	caps           hostcaps
+	pluginID       string
+	owner          string
+	actor          string  // EXT-18：分发主体（空＝非 dispatch 上下文）
+	conversationID core.ID // dispatch-bound, never taken from completion arguments
+	hostProjectID  core.ID // dispatch project; rechecked against stored conversation
+	entrance       string  // dispatch entrance; model tools are "agent"
+	humanGrant     *cmdbus.HumanGrant
+}
+
+func (h inprocHost) requireEffective() error {
+	if h.caps.accountGuard != nil {
+		return h.caps.accountGuard(h.owner)
+	}
+	return nil
 }
 
 func (h inprocHost) PluginID() string { return h.pluginID }
@@ -190,14 +229,26 @@ func (h inprocHost) IsAdmin() bool {
 	if err != nil {
 		return false
 	}
-	return state.IsAdmin
+	return state.Enabled && state.IsAdmin
 }
 
-// ListAccounts 实现 EXT-19 AccountLister（最小账号目录）：仅授权管理读面用。
-// 有效态＝账号存在且非停用（当前 users 表无停用位——must_change_password 不影响
-// 有效性；后续加停用位在此映射）。P3（2026-10-13）：携带 Name 供同名区分。
-// 游标＝owner 升序偏移。
+func (h inprocHost) legacySystemDirectoryAuthorized() bool {
+	if h.requireEffective() != nil {
+		return false
+	}
+	if h.actor == "" {
+		return false
+	}
+	state, err := h.caps.st.GetUserAuthState(h.actor)
+	return err == nil && state.Enabled && state.IsAdmin
+}
+
+// ListAccounts 保留 EXT-19 旧签名，仅供有受信分发主体的系统管理上下文；
+// 项目和文档候选必须走带 locator 的 AccountDirectoryProvider。
 func (h inprocHost) ListAccounts(cursor string, limit int) ([]extension.AccountEntry, string, error) {
+	if !h.legacySystemDirectoryAuthorized() {
+		return nil, "", store.ErrAccountForbidden
+	}
 	if limit <= 0 || limit > 200 {
 		limit = 50
 	}
@@ -207,7 +258,7 @@ func (h inprocHost) ListAccounts(cursor string, limit int) ([]extension.AccountE
 	}
 	entries := make([]extension.AccountEntry, 0, len(users))
 	for _, u := range users {
-		entries = append(entries, extension.AccountEntry{Owner: u.Owner, Name: u.Name, Valid: true})
+		entries = append(entries, extension.AccountEntry{Owner: u.Owner, Name: u.Name, Valid: u.Enabled})
 	}
 	// 排序+游标（owner 升序；cursor 为上一页末 owner，空＝首页）。
 	for i := 0; i < len(entries); i++ {
@@ -238,6 +289,9 @@ func (h inprocHost) ListAccounts(cursor string, limit int) ([]extension.AccountE
 // 姓名子串检索（大小写不敏感；空 query ＝ 首页候选）。结果按 owner 升序，
 // 有效态口径与 ListAccounts 一致。
 func (h inprocHost) SearchAccounts(query string, limit int) ([]extension.AccountEntry, error) {
+	if !h.legacySystemDirectoryAuthorized() {
+		return nil, store.ErrAccountForbidden
+	}
 	if limit <= 0 || limit > 200 {
 		limit = 50
 	}
@@ -253,7 +307,7 @@ func (h inprocHost) SearchAccounts(query string, limit int) ([]extension.Account
 			!strings.Contains(strings.ToLower(u.Name), q) {
 			continue
 		}
-		entries = append(entries, extension.AccountEntry{Owner: u.Owner, Name: u.Name, Valid: true})
+		entries = append(entries, extension.AccountEntry{Owner: u.Owner, Name: u.Name, Valid: u.Enabled})
 	}
 	sort.Slice(entries, func(i, j int) bool { return entries[i].Owner < entries[j].Owner })
 	if len(entries) > limit {
@@ -263,25 +317,43 @@ func (h inprocHost) SearchAccounts(query string, limit int) ([]extension.Account
 }
 
 func (h inprocHost) KVPut(key, value string) error {
-	return h.caps.st.PutPluginKV(h.pluginID, h.owner, key, value)
+	if err := h.requireEffective(); err != nil {
+		return err
+	}
+	return h.caps.st.PutPluginKVAccountChecked(h.owner, h.pluginID, key, value, h.caps.allowImplicitLocal)
 }
 
 func (h inprocHost) KVGet(key string) (string, bool, error) {
+	if err := h.requireEffective(); err != nil {
+		return "", false, err
+	}
 	return h.caps.st.GetPluginKV(h.pluginID, h.owner, key)
 }
 
 func (h inprocHost) Audit(action, target, evidence string) error {
-	return h.caps.st.AppendAuditEvent(store.AuditEvent{
+	if err := h.requireEffective(); err != nil {
+		return err
+	}
+	if strings.HasPrefix(action, "model.context_manifest") {
+		return fmt.Errorf("extension: model context manifest is a reserved host receipt")
+	}
+	return h.caps.st.AppendAuditEventAccountChecked(h.owner, store.AuditEvent{
 		Owner: h.owner, Actor: "plugin:" + h.pluginID,
 		Action: action, Target: target, Evidence: evidence,
-	})
+	}, h.caps.allowImplicitLocal)
 }
 
 func (h inprocHost) Complete(ctx context.Context, prompt string) (string, error) {
+	if err := h.requireEffective(); err != nil {
+		return "", err
+	}
 	return h.caps.complete(ctx, h.owner, prompt)
 }
 
 func (h inprocHost) KnowledgeSearch(ctx context.Context, projectID core.ID, text string, topK int) ([]core.RetrievalHit, error) {
+	if err := h.requireEffective(); err != nil {
+		return nil, err
+	}
 	return h.caps.search(ctx, h.owner, projectID, text, topK)
 }
 
@@ -303,6 +375,9 @@ func (h inprocHost) knowledgeSource(source string) error {
 // "plugin:<id>"；embed=false 只写全文行，embed=true 走 IndexChunks 建向量
 // （embedding 失败降级纯全文，不阻断写入）。
 func (h inprocHost) KnowledgeWrite(ctx context.Context, docs []core.KnowledgeDoc, embed bool) error {
+	if err := h.requireEffective(); err != nil {
+		return err
+	}
 	if len(docs) == 0 {
 		return nil
 	}
@@ -317,20 +392,21 @@ func (h inprocHost) KnowledgeWrite(ctx context.Context, docs []core.KnowledgeDoc
 		}
 	}
 	if !embed {
-		return h.caps.st.AddKnowledge(docs...)
+		return h.caps.st.AddKnowledgeAccountChecked(h.owner, h.caps.allowImplicitLocal, docs...)
 	}
-	return h.caps.pipe.IndexChunks(ctx, core.ID(h.owner), docs)
+	return h.caps.pipe.IndexChunksAccountChecked(ctx, core.ID(h.owner), docs, h.caps.allowImplicitLocal)
 }
 
 // KnowledgePublish replaces refs and their vectors within the publication scope.
 // A registered lifecycle scopes replacement to the exact owner/project/plugin;
 // ordinary unregistered Hosts retain the legacy cross-source ref semantics.
 func (h inprocHost) KnowledgePublish(ctx context.Context, docs []core.KnowledgeDoc, embed bool) error {
+	if err := h.requireEffective(); err != nil {
+		return err
+	}
 	if len(docs) == 0 {
 		return nil
 	}
-	type publicationRef struct{ projectID, ref string }
-	refs := map[publicationRef]bool{}
 	for i := range docs {
 		docs[i].Owner = core.ID(h.owner)
 		if docs[i].Source == "" {
@@ -339,39 +415,33 @@ func (h inprocHost) KnowledgePublish(ctx context.Context, docs []core.KnowledgeD
 		if err := h.knowledgeSource(docs[i].Source); err != nil {
 			return err
 		}
-		if docs[i].Ref != "" {
-			refs[publicationRef{docs[i].ProjectID, docs[i].Ref}] = true
-		}
 	}
 	scoped := h.caps.projects != nil && h.caps.projects.active()
-	for ref := range refs {
-		var err error
-		if scoped {
-			err = h.caps.st.DeletePluginProjectKnowledgeByRef(ctx, h.owner, ref.projectID, ref.ref, h.pluginID)
-		} else {
-			err = h.caps.st.DeleteProjectKnowledgeByRef(ctx, h.owner, ref.projectID, ref.ref)
-		}
-		if err != nil {
-			return err
-		}
+	if embed {
+		return h.caps.pipe.PublishChunksAccountChecked(ctx, core.ID(h.owner), h.pluginID, scoped, docs, h.caps.allowImplicitLocal)
 	}
-
-	return h.KnowledgeWrite(ctx, docs, embed)
+	return h.caps.st.ReplaceKnowledgeAccountChecked(ctx, h.owner, h.pluginID, scoped, h.caps.allowImplicitLocal, docs...)
 }
 
 // KnowledgeDelete 撤销本插件来源（EXT-9）：前缀强制 plugin:<自身ID>——manual
 // 或他人来源拒绝（fail-closed）；删行+向量，幂等。
 func (h inprocHost) KnowledgeDelete(ctx context.Context, sourcePrefix string) error {
+	if err := h.requireEffective(); err != nil {
+		return err
+	}
 	if sourcePrefix != "plugin:"+h.pluginID {
 		return fmt.Errorf("ext-9: plugins may only delete their own source prefix, want %q", "plugin:"+h.pluginID)
 	}
-	_, err := h.caps.st.DeleteKnowledgeBySource(ctx, h.owner, sourcePrefix)
+	_, err := h.caps.st.DeleteKnowledgeBySourceAccountChecked(ctx, h.owner, sourcePrefix, h.caps.allowImplicitLocal)
 	return err
 }
 
 // TaskCreate/TaskUpdate 后台任务台账：基座只记进度/状态，执行体由下游自跑（H5）。
 func (h inprocHost) TaskCreate(kind, title, conversationID string) (string, error) {
-	t, err := h.caps.st.CreateBackgroundTask(h.owner, kind, title, conversationID)
+	if err := h.requireEffective(); err != nil {
+		return "", err
+	}
+	t, err := h.caps.st.CreateBackgroundTaskAccountChecked(h.owner, kind, title, conversationID, h.caps.allowImplicitLocal)
 	if err != nil {
 		return "", err
 	}
@@ -379,27 +449,42 @@ func (h inprocHost) TaskCreate(kind, title, conversationID string) (string, erro
 }
 
 func (h inprocHost) TaskUpdate(taskID, status string, progress int, errText string) error {
-	return h.caps.st.UpdateBackgroundTask(h.owner, taskID, status, progress, errText)
+	if err := h.requireEffective(); err != nil {
+		return err
+	}
+	return h.caps.st.UpdateBackgroundTaskAccountChecked(h.owner, taskID, status, progress, errText, h.caps.allowImplicitLocal)
 }
 
 // ArtifactGet/ArtifactContent 工件只读（R1-3 ingest 读原件；写入属完整集）。
 func (h inprocHost) ArtifactGet(artifactID string) (core.Artifact, error) {
+	if err := h.requireEffective(); err != nil {
+		return core.Artifact{}, err
+	}
 	return h.caps.st.GetArtifact(h.owner, artifactID)
 }
 
 func (h inprocHost) ArtifactContent(artifactID string) ([]byte, error) {
+	if err := h.requireEffective(); err != nil {
+		return nil, err
+	}
 	return h.caps.st.ArtifactContent(h.owner, artifactID)
 }
 
 // ParseDocument 内置文档解析（EXT-5）：委托 hostcaps.parse；纯计算不经存储，
 // owner 作用域由调用方经 ArtifactContent 取字节时保证。
 func (h inprocHost) ParseDocument(ctx context.Context, filename, mime string, content []byte) (core.ParsedDocument, error) {
+	if err := h.requireEffective(); err != nil {
+		return core.ParsedDocument{}, err
+	}
 	return h.caps.parse(ctx, filename, mime, content)
 }
 
 // ---- EXT-17 Surface 能力（可选）：nil 槽=能力缺失，明确拒绝不降级 ----
 
 func (h inprocHost) surface() (*surfacesvc.Service, error) {
+	if err := h.requireEffective(); err != nil {
+		return nil, err
+	}
 	if h.caps.surfaces == nil {
 		return nil, surfacesvc.ErrUnavailable
 	}
@@ -411,11 +496,11 @@ func (h inprocHost) SurfaceSave(ctx context.Context, req extension.SurfaceSaveRe
 	if err != nil {
 		return core.SurfaceSnapshot{}, err
 	}
-	return svc.Submit(ctx, h.owner, h.pluginID, surfacesvc.SubmitRequest{
+	return svc.SubmitAccountChecked(ctx, h.owner, h.pluginID, surfacesvc.SubmitRequest{
 		SurfaceID: req.SurfaceID, ConversationID: req.ConversationID, SourceRunID: req.SourceRunID,
 		BaseRevision: req.BaseRevision, ObservedEpoch: req.ObservedEpoch,
 		ContextVersion: req.ContextVersion, SemanticText: req.SemanticText, Spec: req.Spec,
-	})
+	}, h.caps.allowImplicitLocal)
 }
 
 func (h inprocHost) SurfaceGet(ctx context.Context, surfaceID core.ID) (core.SurfaceSnapshot, error) {

internal/app/human_decision.go

@@ -0,0 +1,104 @@
+package app
+
+import (
+	"fmt"
+	"time"
+
+	"agent-system-backend/internal/cmdbus"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+)
+
+func (h inprocHost) clock() time.Time {
+	if h.caps.now != nil {
+		return h.caps.now()
+	}
+	return time.Now()
+}
+
+func humanCommand(audience string) (string, error) {
+	if audience == extension.HumanDecisionAudienceStructure {
+		return "rdm.structure.decide", nil
+	}
+	return "", fmt.Errorf("extension: human decision audience is not issued for this host")
+}
+
+func humanEntranceAllowed(entrance string) bool {
+	switch entrance {
+	case "button", "card", "api":
+		return true
+	default:
+		return false
+	}
+}
+
+// IssueHumanDecision opens a pending card for the authenticated person.
+// Model-tool, chat, and slash entrances cannot open one.
+func (h inprocHost) IssueHumanDecision(binding extension.HumanDecisionBinding, question string) (extension.HumanDecisionCard, error) {
+	if h.caps.st == nil || h.actor == "" || h.actor != binding.Actor || !humanEntranceAllowed(h.entrance) {
+		return extension.HumanDecisionCard{}, fmt.Errorf("extension: human decision cannot be issued on this dispatch")
+	}
+	commandID, err := humanCommand(binding.Audience)
+	if err != nil {
+		return extension.HumanDecisionCard{}, err
+	}
+	if binding.ProjectID == "" || binding.ProposalID == "" || binding.ProposalRevision < 1 || binding.PayloadHash == "" {
+		return extension.HumanDecisionCard{}, fmt.Errorf("extension: human decision binding is incomplete")
+	}
+	rec, err := h.caps.st.IssueHumanDecision(store.HumanDecision{
+		PluginID: h.pluginID, Audience: binding.Audience, CommandID: commandID,
+		HumanActor: binding.Actor, Owner: h.owner, ProjectID: binding.ProjectID,
+		ProposalID: binding.ProposalID, ProposalRevision: binding.ProposalRevision,
+		PayloadHash: binding.PayloadHash, Question: question, ConversationID: string(h.conversationID),
+	}, h.clock())
+	if err != nil {
+		return extension.HumanDecisionCard{}, err
+	}
+	return extension.HumanDecisionCard{CardID: rec.ID, Question: rec.Question, ExpiresAt: rec.ExpiresAt}, nil
+}
+
+// VerifyHumanDecision reports the persisted human response for this dispatch.
+// A model tool, a forged entrance, a mismatched binding, an expired card, or
+// a revoked card fails closed. The record stays answered; it is not consumed.
+func (h inprocHost) VerifyHumanDecision(expected extension.HumanDecisionBinding) (extension.HumanDecisionProof, error) {
+	if h.caps.st == nil || h.humanGrant == nil || h.entrance == "agent" || h.actor == "" || h.actor != h.humanGrant.Actor {
+		return extension.HumanDecisionProof{}, fmt.Errorf("extension: this dispatch has no authenticated human decision")
+	}
+	rec, err := h.caps.st.HumanDecision(h.humanGrant.CardID)
+	if err != nil {
+		return extension.HumanDecisionProof{}, fmt.Errorf("extension: human decision card is not pending for this dispatch")
+	}
+	now := h.clock()
+	if rec.Status != "responded" || rec.PluginID != h.pluginID || rec.ProofID == "" || rec.ProofID != h.humanGrant.ProofID ||
+		rec.HumanActor != expected.Actor || rec.HumanActor != h.actor || rec.Decision != expected.Decision ||
+		rec.Audience != expected.Audience || rec.ProjectID != expected.ProjectID || rec.ProposalID != expected.ProposalID ||
+		rec.ProposalRevision != expected.ProposalRevision || rec.PayloadHash != expected.PayloadHash ||
+		!now.Before(rec.ExpiresAt) {
+		return extension.HumanDecisionProof{}, fmt.Errorf("extension: human decision does not match this dispatch")
+	}
+	return extension.HumanDecisionProof{
+		ProofID: rec.ProofID, Issuer: "agent-system-backend", HumanActor: rec.HumanActor,
+		Audience: rec.Audience, ProjectID: rec.ProjectID, ProposalID: rec.ProposalID,
+		Revision: rec.ProposalRevision, PayloadHash: rec.PayloadHash, Decision: rec.Decision,
+		IssuedAt: rec.IssuedAt, ExpiresAt: rec.ExpiresAt, ConversationID: rec.ConversationID,
+		HITLResponseRef: rec.ID,
+	}, nil
+}
+
+// RevokeHumanDecision invalidates a still-pending card. Answered proofs stay
+// available until they expire; consumption is not a host concern.
+func (h inprocHost) RevokeHumanDecision(cardID string) error {
+	if h.caps.st == nil || h.actor == "" || !humanEntranceAllowed(h.entrance) {
+		return fmt.Errorf("extension: human decision cannot be revoked on this dispatch")
+	}
+	return h.caps.st.RevokeHumanDecision(h.pluginID, h.actor, cardID)
+}
+
+// HumanGrantFromRecord copies the persisted response onto a dispatch.
+// Callers must set it only after an authenticated response or session retry.
+func HumanGrantFromRecord(rec store.HumanDecision) *cmdbus.HumanGrant {
+	if rec.ProofID == "" || rec.Status != "responded" {
+		return nil
+	}
+	return &cmdbus.HumanGrant{CardID: rec.ID, ProofID: rec.ProofID, Actor: rec.HumanActor, Decision: rec.Decision}
+}

internal/app/human_decision_test.go

@@ -0,0 +1,170 @@
+package app
+
+import (
+	"testing"
+	"time"
+
+	"agent-system-backend/internal/cmdbus"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+)
+
+func openDecisionStore(t *testing.T) *store.Store {
+	t.Helper()
+	st, err := store.OpenSQLite(t.TempDir() + "/decision.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { st.Close() })
+	return st
+}
+
+func decisionHost(st *store.Store, plugin, actor, entrance string, now time.Time, grant *cmdbus.HumanGrant) inprocHost {
+	return inprocHost{
+		caps:     hostcaps{st: st, now: func() time.Time { return now }},
+		pluginID: plugin, owner: actor, actor: actor, entrance: entrance, humanGrant: grant,
+	}
+}
+
+func binding(decision, hash string, revision int) extension.HumanDecisionBinding {
+	return extension.HumanDecisionBinding{
+		Audience: extension.HumanDecisionAudienceStructure, Actor: "alice", ProjectID: "p1",
+		ProposalID: "prop-1", ProposalRevision: revision, PayloadHash: hash, Decision: decision,
+	}
+}
+
+func TestHumanDecisionAuthenticatedResponse(t *testing.T) {
+	st := openDecisionStore(t)
+	now := time.Date(2026, 10, 15, 1, 0, 0, 0, time.UTC)
+	host := decisionHost(st, "rdm", "alice", "button", now, nil)
+	card, err := host.IssueHumanDecision(binding("", "hash-1", 1), "确认结构变更")
+	if err != nil {
+		t.Fatal(err)
+	}
+	answered, err := st.RespondHumanDecision("alice", card.CardID, "accept", now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	host.humanGrant = &cmdbus.HumanGrant{CardID: answered.ID, ProofID: answered.ProofID, Actor: "alice", Decision: "accept"}
+	host.entrance = "card"
+	proof, err := host.VerifyHumanDecision(binding("accept", "hash-1", 1))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if proof.ProofID == "" || proof.Issuer != "agent-system-backend" || proof.HumanActor != "alice" ||
+		proof.HITLResponseRef != card.CardID || proof.PayloadHash != "hash-1" {
+		t.Fatalf("proof = %+v", proof)
+	}
+	again, err := host.VerifyHumanDecision(binding("accept", "hash-1", 1))
+	if err != nil || again.ProofID != proof.ProofID {
+		t.Fatalf("second verify consumed or changed the proof: %v %+v", err, again)
+	}
+	stored, err := st.HumanDecision(card.CardID)
+	if err != nil || stored.Status != "responded" {
+		t.Fatalf("host consumed the proof, status=%s err=%v", stored.Status, err)
+	}
+}
+
+func TestHumanDecisionRejectsUntrustedDispatch(t *testing.T) {
+	st := openDecisionStore(t)
+	now := time.Date(2026, 10, 15, 1, 0, 0, 0, time.UTC)
+	host := decisionHost(st, "rdm", "alice", "button", now, nil)
+	card, err := host.IssueHumanDecision(binding("", "hash-1", 1), "确认")
+	if err != nil {
+		t.Fatal(err)
+	}
+	answered, err := st.RespondHumanDecision("alice", card.CardID, "accept", now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	grant := &cmdbus.HumanGrant{CardID: answered.ID, ProofID: answered.ProofID, Actor: "alice", Decision: "accept"}
+	expect := binding("accept", "hash-1", 1)
+
+	agent := decisionHost(st, "rdm", "alice", "agent", now, grant)
+	if _, err := agent.VerifyHumanDecision(expect); err == nil {
+		t.Fatal("model tool dispatch verified a human decision")
+	}
+	forged := decisionHost(st, "rdm", "alice", "card", now, nil)
+	if _, err := forged.VerifyHumanDecision(expect); err == nil {
+		t.Fatal("forged entrance verified without a host grant")
+	}
+	if _, err := decisionHost(st, "rdm", "alice", "agent", now, nil).IssueHumanDecision(binding("", "hash-2", 1), "x"); err == nil {
+		t.Fatal("model tool issued a human decision card")
+	}
+	if _, err := decisionHost(st, "other", "alice", "card", now, grant).VerifyHumanDecision(expect); err == nil {
+		t.Fatal("another plugin reused the proof")
+	}
+	other := expect
+	other.ProposalID = "prop-2"
+	if _, err := decisionHost(st, "rdm", "alice", "card", now, grant).VerifyHumanDecision(other); err == nil {
+		t.Fatal("proof authorized a second proposal")
+	}
+	wrongActor := expect
+	wrongActor.Actor = "bob"
+	if _, err := decisionHost(st, "rdm", "bob", "card", now, grant).VerifyHumanDecision(wrongActor); err == nil {
+		t.Fatal("wrong actor verified")
+	}
+	wrongProject := expect
+	wrongProject.ProjectID = "p2"
+	if _, err := decisionHost(st, "rdm", "alice", "card", now, grant).VerifyHumanDecision(wrongProject); err == nil {
+		t.Fatal("wrong project verified")
+	}
+	wrongRev := expect
+	wrongRev.ProposalRevision = 2
+	if _, err := decisionHost(st, "rdm", "alice", "card", now, grant).VerifyHumanDecision(wrongRev); err == nil {
+		t.Fatal("wrong revision verified")
+	}
+	wrongHash := expect
+	wrongHash.PayloadHash = "hash-changed"
+	if _, err := decisionHost(st, "rdm", "alice", "card", now, grant).VerifyHumanDecision(wrongHash); err == nil {
+		t.Fatal("wrong payload hash verified")
+	}
+	if _, err := decisionHost(st, "rdm", "alice", "button", now, nil).IssueHumanDecision(
+		extension.HumanDecisionBinding{Audience: "other.plugin", Actor: "alice", ProjectID: "p1", ProposalID: "prop-1", ProposalRevision: 1, PayloadHash: "h"},
+		"x"); err == nil {
+		t.Fatal("foreign audience was issued")
+	}
+}
+
+func TestHumanDecisionCardChangeExpiryAndRevoke(t *testing.T) {
+	st := openDecisionStore(t)
+	now := time.Date(2026, 10, 15, 1, 0, 0, 0, time.UTC)
+	host := decisionHost(st, "rdm", "alice", "api", now, nil)
+	first, err := host.IssueHumanDecision(binding("", "hash-1", 1), "旧卡")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := host.IssueHumanDecision(binding("", "hash-2", 2), "新卡"); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.RespondHumanDecision("alice", first.CardID, "accept", now); err == nil {
+		t.Fatal("changed card still accepted the old confirmation")
+	}
+	current, err := host.IssueHumanDecision(binding("", "hash-3", 3), "待撤销")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := host.RevokeHumanDecision(current.CardID); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.RespondHumanDecision("alice", current.CardID, "accept", now); err == nil {
+		t.Fatal("revoked card was answered")
+	}
+	live, err := host.IssueHumanDecision(binding("", "hash-4", 4), "会过期")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.RespondHumanDecision("alice", live.CardID, "accept", now.Add(16*time.Minute)); err == nil {
+		t.Fatal("expired card was answered")
+	}
+}
+
+func TestMissingHumanDecisionStoreFailsClosed(t *testing.T) {
+	host := decisionHost(nil, "rdm", "alice", "button", time.Now(), nil)
+	if _, err := host.IssueHumanDecision(binding("", "hash-1", 1), "x"); err == nil {
+		t.Fatal("missing store issued a card")
+	}
+	if _, err := host.VerifyHumanDecision(binding("accept", "hash-1", 1)); err == nil {
+		t.Fatal("missing store verified a decision")
+	}
+}

internal/app/inproc_host_test.go

@@ -78,6 +78,9 @@ func TestInprocHostOwnerScope(t *testing.T) {
 	bus, st := newInprocTestApp(t, nil) // embedder nil：embed=true 仍只落全文（IndexChunks 降级路径）
 
 	for _, owner := range []string{"alice", "bob"} {
+		if err := st.EnsureUser(owner, ""); err != nil {
+			t.Fatal(err)
+		}
 		resp := bus.Dispatch(context.Background(), cmdbus.Request{
 			ID: "tst.record", Params: map[string]any{"ref": owner + "-ref"}, Owner: owner, Actor: "ui", Entrance: "chat",
 		})
@@ -157,6 +160,9 @@ func TestInprocHostKnowledgeWriteEmbedHash(t *testing.T) {
 		},
 	})
 	bus, st := newInprocTestApp(t, func() string { return "hash" })
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
 
 	resp := bus.Dispatch(context.Background(), cmdbus.Request{
 		ID: "tst.embed", Params: map[string]any{"text": "Hash 向量内容"}, Owner: "alice", Entrance: "api",

internal/app/knowledge_authorization_test.go

@@ -16,6 +16,11 @@ func TestHostKnowledgeV2AndProjectReplacement(t *testing.T) {
 		t.Fatal(err)
 	}
 	defer st.Close()
+	for _, owner := range []string{"alice", "bob"} {
+		if err := st.EnsureUser(owner, ""); err != nil {
+			t.Fatal(err)
+		}
+	}
 	pipe := rag.NewPipeline(st, settings.NewService(st), nil, nil)
 	auth := &projectAuthz{}
 	alice := inprocHost{owner: "alice", pluginID: "rdm", caps: hostcaps{st: st, pipe: pipe, authz: auth}}
@@ -76,6 +81,9 @@ func TestRegisteredProjectHostRejectsForeignKnowledgeSource(t *testing.T) {
 		t.Fatal(err)
 	}
 	defer st.Close()
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
 	slot := &projectLifecycleSlot{}
 	caps := hostcaps{st: st, projects: slot}
 	if err := (pluginRegistry{pluginID: "rdm", caps: caps}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
@@ -110,6 +118,9 @@ func TestProjectPublishPreservesForeignPluginAndScope(t *testing.T) {
 		t.Fatal(err)
 	}
 	defer st.Close()
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
 	slot := &projectLifecycleSlot{}
 	caps := hostcaps{st: st, projects: slot}
 	if err := (pluginRegistry{pluginID: "rdm", caps: caps}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
@@ -150,6 +161,9 @@ func TestUnregisteredPublishRetainsLegacyRefScope(t *testing.T) {
 		t.Fatal(err)
 	}
 	defer st.Close()
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
 	if err := st.AddKnowledge(core.KnowledgeDoc{ID: "legacy", Owner: "alice", ProjectID: "old-project", Source: "manual", Ref: "same", Chunk: "legacyneedle"}); err != nil {
 		t.Fatal(err)
 	}

internal/app/local_account_test.go

@@ -0,0 +1,98 @@
+package app
+
+import (
+	"errors"
+	"path/filepath"
+	"testing"
+
+	"agent-system-backend/internal/store"
+)
+
+func TestLocalOwnerAccountCreationAndReissuePreserveIdentity(t *testing.T) {
+	dir := t.TempDir()
+	seed, err := store.OpenSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := seed.EnsureSystemIdentity("test-local-owner", "sqlite"); err != nil {
+		t.Fatal(err)
+	}
+	seed.Close()
+	bootstrap, err := BootstrapAdmin("", dir, "root", false)
+	if err != nil || bootstrap == "" {
+		t.Fatalf("bootstrap: %v", err)
+	}
+	first, _, err := CreateUserAccount("", dir, "alice", "", "", false, true, false)
+	if err != nil || first == "" {
+		t.Fatalf("local pending create: %v", err)
+	}
+	st, err := store.OpenExistingSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	account, err := st.GetAccountByOwner("alice")
+	if err != nil {
+		t.Fatal(err)
+	}
+	st.Close()
+	second, owner, err := InitializeAccount("", dir, account.ID, account.StateVersion, account.InitializationGeneration)
+	if err != nil || owner != "alice" || second == first {
+		t.Fatalf("owner reissue: owner=%s err=%v", owner, err)
+	}
+	st, err = store.OpenExistingSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	current, err := st.GetAccount(account.ID)
+	if err != nil || current.Owner != account.Owner || current.ID != account.ID || current.InitializationGeneration != account.InitializationGeneration+1 {
+		t.Fatalf("reissue changed account identity: %+v %v", current, err)
+	}
+	if _, _, err := st.RedeemLoginKey(first); err == nil {
+		t.Fatal("old activation grant survived reissue")
+	}
+	if _, _, err := st.RedeemLoginKey(second); err != nil {
+		t.Fatalf("new activation grant failed: %v", err)
+	}
+}
+
+func TestAPIKeyCLIRequiresExistingInitializedAccount(t *testing.T) {
+	dir := t.TempDir()
+	st, err := store.OpenSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := st.EnsureSystemIdentity("test-api-key-admission", "sqlite"); err != nil {
+		t.Fatal(err)
+	}
+	st.Close()
+	if _, err := CreateAPIKey("", dir, "alice", "integration"); !errors.Is(err, store.ErrNotFound) {
+		t.Fatalf("missing account was implicitly created: %v", err)
+	}
+	grant, err := BootstrapAdmin("", dir, "alice", true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := CreateAPIKey("", dir, "alice", "integration"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("pending account received a full API key: %v", err)
+	}
+	st, err = store.OpenExistingSQLite(filepath.Join(dir, "agent-system.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	token, _, err := st.RedeemLoginKey(grant)
+	if err != nil {
+		t.Fatal(err)
+	}
+	hash, err := store.HashPassword("trusted-owner-password")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.CompleteSetPasswordChecked(token, hash); err != nil {
+		t.Fatal(err)
+	}
+	if key, err := CreateAPIKey("", dir, "alice", "integration"); err != nil || key == "" {
+		t.Fatalf("initialized account could not receive its API key: %v", err)
+	}
+}

internal/app/project_audit.go

@@ -0,0 +1,336 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"sync"
+
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+// projectAuditSlot binds the audit.read policy to its registering domain plugin.
+// A different plugin cannot borrow that policy through its own Host handle.
+type projectAuditSlot struct {
+	mu             sync.RWMutex
+	holder         string
+	check          extension.ProjectAuditAuthorizer
+	verifier       extension.ProjectAuditLinkVerifier
+	disclose       extension.ProjectAuditDisclosureAuthorizer
+	publisherToken *auditPublisherToken
+}
+
+// This identity is available only to the publisher factory returned at
+// registration. A caller-provided pluginID cannot manufacture the pointer.
+type auditPublisherToken struct{ marker byte }
+
+type projectAuditPublisherFactory struct {
+	caps     hostcaps
+	pluginID string
+	token    *auditPublisherToken
+}
+
+func (f projectAuditPublisherFactory) ForOwner(owner string) (extension.ProjectAuditPublisher, error) {
+	if owner == "" || f.token == nil {
+		return nil, extension.ErrProjectAuditDenied
+	}
+	return projectAuditPublisher{caps: f.caps, owner: owner, pluginID: f.pluginID, token: f.token}, nil
+}
+
+type projectAuditPublisher struct {
+	caps     hostcaps
+	owner    string
+	pluginID string
+	token    *auditPublisherToken
+}
+
+func (p projectAuditPublisher) PublishProjectAuditLink(ctx context.Context, req extension.ProjectAuditLinkRequest) (extension.ProjectAuditLinkReceipt, error) {
+	h := inprocHost{caps: p.caps, owner: p.owner, pluginID: p.pluginID}
+	return h.publishProjectAuditLink(ctx, req, p.token)
+}
+
+func (s *projectAuditSlot) register(pluginID string, check extension.ProjectAuditAuthorizer) error {
+	if pluginID == "" || check == nil {
+		return extension.ErrProjectAuditUnsupported
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.check != nil || (s.holder != "" && s.holder != pluginID) {
+		return errors.New("extension: project audit authorizer already registered")
+	}
+	s.holder, s.check = pluginID, check
+	return nil
+}
+
+func (s *projectAuditSlot) registerVerifier(pluginID string, verify extension.ProjectAuditLinkVerifier) (*auditPublisherToken, error) {
+	if pluginID == "" || verify == nil {
+		return nil, extension.ErrProjectAuditUnsupported
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.verifier != nil || (s.holder != "" && s.holder != pluginID) {
+		return nil, errors.New("extension: project audit verifier already registered")
+	}
+	s.holder, s.verifier = pluginID, verify
+	s.publisherToken = &auditPublisherToken{marker: 1}
+	return s.publisherToken, nil
+}
+
+func (s *projectAuditSlot) registerDisclosure(pluginID string, disclose extension.ProjectAuditDisclosureAuthorizer) error {
+	if pluginID == "" || disclose == nil {
+		return extension.ErrProjectAuditUnsupported
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.disclose != nil || (s.holder != "" && s.holder != pluginID) {
+		return errors.New("extension: project audit disclosure authorizer already registered")
+	}
+	s.holder, s.disclose = pluginID, disclose
+	return nil
+}
+
+func (r compiledRegistry) RegisterProjectAuditAuthorizer(extension.ProjectAuditAuthorizer) error {
+	return errors.New("extension: declarative plugins cannot register project audit authorizers")
+}
+
+func (r pluginRegistry) RegisterProjectAuditAuthorizer(check extension.ProjectAuditAuthorizer) error {
+	if r.caps.projectAudit == nil {
+		return extension.ErrProjectAuditUnsupported
+	}
+	return r.caps.projectAudit.register(r.pluginID, check)
+}
+
+func (r recordRegistry) RegisterProjectAuditAuthorizer(check extension.ProjectAuditAuthorizer) error {
+	reg, ok := r.Registry.(extension.ProjectAuditRegistry)
+	if !ok {
+		return extension.ErrProjectAuditUnsupported
+	}
+	return reg.RegisterProjectAuditAuthorizer(check)
+}
+
+func (r compiledRegistry) RegisterProjectAuditLinkVerifier(extension.ProjectAuditLinkVerifier) (extension.ProjectAuditPublisherFactory, error) {
+	return nil, errors.New("extension: declarative plugins cannot register project audit link verifiers")
+}
+func (r compiledRegistry) RegisterProjectAuditDisclosureAuthorizer(extension.ProjectAuditDisclosureAuthorizer) error {
+	return errors.New("extension: declarative plugins cannot register project audit disclosure authorizers")
+}
+func (r pluginRegistry) RegisterProjectAuditLinkVerifier(verify extension.ProjectAuditLinkVerifier) (extension.ProjectAuditPublisherFactory, error) {
+	if r.caps.projectAudit == nil {
+		return nil, extension.ErrProjectAuditUnsupported
+	}
+	token, err := r.caps.projectAudit.registerVerifier(r.pluginID, verify)
+	if err != nil {
+		return nil, err
+	}
+	return projectAuditPublisherFactory{caps: r.caps, pluginID: r.pluginID, token: token}, nil
+}
+func (r pluginRegistry) RegisterProjectAuditDisclosureAuthorizer(disclose extension.ProjectAuditDisclosureAuthorizer) error {
+	if r.caps.projectAudit == nil {
+		return extension.ErrProjectAuditUnsupported
+	}
+	return r.caps.projectAudit.registerDisclosure(r.pluginID, disclose)
+}
+func (r recordRegistry) RegisterProjectAuditLinkVerifier(verify extension.ProjectAuditLinkVerifier) (extension.ProjectAuditPublisherFactory, error) {
+	reg, ok := r.Registry.(extension.ProjectAuditLinkRegistry)
+	if !ok {
+		return nil, extension.ErrProjectAuditUnsupported
+	}
+	return reg.RegisterProjectAuditLinkVerifier(verify)
+}
+func (r recordRegistry) RegisterProjectAuditDisclosureAuthorizer(disclose extension.ProjectAuditDisclosureAuthorizer) error {
+	reg, ok := r.Registry.(extension.ProjectAuditLinkRegistry)
+	if !ok {
+		return extension.ErrProjectAuditUnsupported
+	}
+	return reg.RegisterProjectAuditDisclosureAuthorizer(disclose)
+}
+
+var _ extension.ProjectAuditHost = inprocHost{}
+var _ extension.ProjectAuditPublisher = projectAuditPublisher{}
+var _ extension.ProjectAuditPublisherFactory = projectAuditPublisherFactory{}
+
+func (h inprocHost) publishProjectAuditLink(ctx context.Context, req extension.ProjectAuditLinkRequest, capability *auditPublisherToken) (extension.ProjectAuditLinkReceipt, error) {
+	if err := ctx.Err(); err != nil {
+		return extension.ProjectAuditLinkReceipt{}, err
+	}
+	if h.caps.projectAudit == nil || h.caps.st == nil {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditUnsupported
+	}
+	slot := h.caps.projectAudit
+	slot.mu.RLock()
+	holder, verify, registeredToken := slot.holder, slot.verifier, slot.publisherToken
+	slot.mu.RUnlock()
+	if holder != h.pluginID || verify == nil || registeredToken == nil || capability != registeredToken {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditUnsupported
+	}
+	if h.owner == "" || (h.actor != "" && h.actor != h.owner) || req.HostAuditOffset < 0 || req.ProjectID == "" || req.SourceKind != "domain-commit" || req.SourceID == "" || req.OperationID == "" || req.ResourceKind == "" || req.ResourceID == "" || req.DisclosureClass != "metadata" || req.IdempotencyKey == "" {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditDenied
+	}
+	// An explicit offset is only a locator. A historical collision or a forged
+	// offset must not turn a private command with the same operation ID into a
+	// published project receipt.
+	resolved, err := h.caps.st.CommittedAuditOffset(h.owner, string(req.ProjectID), req.OperationID)
+	if errors.Is(err, store.ErrNotFound) {
+		if req.HostAuditOffset == 0 {
+			return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditPending
+		}
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditDenied
+	}
+	if errors.Is(err, store.ErrConflict) {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditLinkConflict
+	}
+	if err != nil {
+		return extension.ProjectAuditLinkReceipt{}, err
+	}
+	if req.HostAuditOffset != 0 && req.HostAuditOffset != resolved {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditLinkConflict
+	}
+	req.HostAuditOffset = resolved
+	row, projectID, err := h.caps.st.CommandAuditForLink(h.owner, req.HostAuditOffset)
+	if errors.Is(err, store.ErrNotFound) {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditDenied
+	}
+	if err != nil {
+		return extension.ProjectAuditLinkReceipt{}, err
+	}
+	if projectID != string(req.ProjectID) || row.Envelope.Actor != h.owner || row.Envelope.OperationID != req.OperationID || string(row.Envelope.State) != "committed" || row.Envelope.RunID != req.RunID {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditDenied
+	}
+	if req.RunID != "" {
+		bound, err := h.caps.st.RunBoundToAudit(h.owner, projectID, row.Envelope.ConversationID, req.RunID)
+		if err != nil {
+			return extension.ProjectAuditLinkReceipt{}, err
+		}
+		if !bound {
+			return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditDenied
+		}
+	}
+	previous, lookupErr := h.caps.st.ProjectAuditLinkByKey(h.owner, req.IdempotencyKey)
+	if lookupErr == nil {
+		if previous.HostAuditOffset != req.HostAuditOffset || previous.ProjectID != string(req.ProjectID) || previous.SourceKind != req.SourceKind || previous.SourceID != req.SourceID || previous.OperationID != req.OperationID || previous.ResourceKind != req.ResourceKind || previous.ResourceID != req.ResourceID || previous.RunID != req.RunID || previous.DisclosureClass != req.DisclosureClass {
+			return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditLinkConflict
+		}
+		return extension.ProjectAuditLinkReceipt{LinkID: previous.ID, HostAuditOffset: previous.HostAuditOffset}, nil
+	}
+	if !errors.Is(lookupErr, store.ErrNotFound) {
+		return extension.ProjectAuditLinkReceipt{}, lookupErr
+	}
+	proof := extension.ProjectAuditLinkProof{ProjectAuditLinkRequest: req, Owner: h.owner}
+	ok, err := verify(ctx, proof)
+	if err != nil {
+		return extension.ProjectAuditLinkReceipt{}, err
+	}
+	if !ok {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditDenied
+	}
+	if err := ctx.Err(); err != nil {
+		return extension.ProjectAuditLinkReceipt{}, err
+	}
+	link := store.ProjectAuditLink{HostAuditOffset: req.HostAuditOffset, ProjectID: projectID, Owner: h.owner,
+		SourceKind: req.SourceKind, SourceID: req.SourceID, OperationID: req.OperationID, ResourceKind: req.ResourceKind,
+		ResourceID: req.ResourceID, RunID: req.RunID, DisclosureClass: req.DisclosureClass, IdempotencyKey: req.IdempotencyKey}
+	saved, err := h.caps.st.SaveProjectAuditLink(link)
+	if errors.Is(err, store.ErrConflict) {
+		return extension.ProjectAuditLinkReceipt{}, extension.ErrProjectAuditLinkConflict
+	}
+	if err != nil {
+		return extension.ProjectAuditLinkReceipt{}, err
+	}
+	return extension.ProjectAuditLinkReceipt{LinkID: saved.ID, HostAuditOffset: saved.HostAuditOffset}, nil
+}
+
+func (h inprocHost) QueryProjectAudit(ctx context.Context, q extension.ProjectAuditQuery) (extension.ProjectAuditPage, error) {
+	if err := ctx.Err(); err != nil {
+		return extension.ProjectAuditPage{}, err
+	}
+	if h.actor == "" || h.actor != h.owner || q.ProjectID == "" {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditDenied
+	}
+	if h.caps.projectAudit == nil || h.caps.st == nil {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditUnsupported
+	}
+	slot := h.caps.projectAudit
+	slot.mu.RLock()
+	holder, check := slot.holder, slot.check
+	slot.mu.RUnlock()
+	if holder != h.pluginID || check == nil {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditUnsupported
+	}
+	ok, err := check(h.actor, core.ID(q.ProjectID))
+	if err != nil {
+		return extension.ProjectAuditPage{}, err
+	}
+	if !ok {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditDenied
+	}
+	if err := ctx.Err(); err != nil {
+		return extension.ProjectAuditPage{}, err
+	}
+	if q.LinkedSourceKind != "" || q.LinkedSourceID != "" || q.LinkedHostOffset != 0 {
+		return h.queryLinkedProjectAudit(ctx, q, slot)
+	}
+	rows, cutoff, next, err := h.caps.st.ListProjectCommandAudits(h.owner, string(q.ProjectID), q.BeforeOffset, q.CutoffOffset, q.Limit)
+	if err != nil {
+		return extension.ProjectAuditPage{}, err
+	}
+	page := extension.ProjectAuditPage{
+		Receipts:   make([]extension.HostAuditReceipt, 0, len(rows)),
+		NextOffset: next, CutoffOffset: cutoff,
+		Coverage: extension.ProjectAuditCoverage{
+			CommandAudit: "actor-owned-project-bound-only", CutoffConsistency: "committed-prefix", CrossMember: "unsupported", LegacyProjectBinding: "not-recorded", RunRelations: "unsupported", ModelReceipts: "unsupported",
+			BackgroundReceipts: "unsupported", ResourceBodies: "unsupported",
+		},
+	}
+	for _, row := range rows {
+		nameStatus := "not-recorded"
+		if row.ActorName != "" {
+			nameStatus = "recorded"
+		}
+		page.Receipts = append(page.Receipts, extension.HostAuditReceipt{
+			SourceOffset: row.Offset, Time: row.Envelope.Time, ActorID: row.Envelope.Actor,
+			ActorName: row.ActorName, ActorNameStatus: nameStatus,
+			CommandID: row.Envelope.CommandID, State: string(row.Envelope.State),
+			OperationID: row.Envelope.OperationID, ConversationID: row.Envelope.ConversationID,
+		})
+	}
+	return page, nil
+}
+
+func (h inprocHost) queryLinkedProjectAudit(ctx context.Context, q extension.ProjectAuditQuery, slot *projectAuditSlot) (extension.ProjectAuditPage, error) {
+	if q.LinkedSourceKind != "domain-commit" || q.LinkedSourceID == "" || q.LinkedHostOffset <= 0 || q.BeforeOffset != 0 || q.CutoffOffset != 0 {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditUnsupported
+	}
+	slot.mu.RLock()
+	disclose := slot.disclose
+	slot.mu.RUnlock()
+	if disclose == nil {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditUnsupported
+	}
+	link, row, err := h.caps.st.ProjectAuditLinkedReceipt(string(q.ProjectID), q.LinkedSourceKind, q.LinkedSourceID, q.LinkedHostOffset)
+	if errors.Is(err, store.ErrNotFound) {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditDenied
+	}
+	if err != nil {
+		return extension.ProjectAuditPage{}, err
+	}
+	resource := extension.ProjectAuditLinkedResource{ProjectID: q.ProjectID, Owner: link.Owner, SourceKind: link.SourceKind, SourceID: link.SourceID,
+		OperationID: link.OperationID, ResourceKind: link.ResourceKind, ResourceID: link.ResourceID, RunID: link.RunID, DisclosureClass: link.DisclosureClass}
+	allowed, err := disclose(ctx, h.actor, resource)
+	if err != nil {
+		return extension.ProjectAuditPage{}, err
+	}
+	if !allowed.Metadata {
+		return extension.ProjectAuditPage{}, extension.ErrProjectAuditDenied
+	}
+	nameStatus := "not-recorded"
+	if row.ActorName != "" {
+		nameStatus = "recorded"
+	}
+	return extension.ProjectAuditPage{Receipts: []extension.HostAuditReceipt{{SourceOffset: row.Offset, Time: row.Envelope.Time,
+		ActorID: row.Envelope.Actor, ActorName: row.ActorName, ActorNameStatus: nameStatus, CommandID: row.Envelope.CommandID,
+		State: string(row.Envelope.State), OperationID: row.Envelope.OperationID}},
+		Coverage: extension.ProjectAuditCoverage{CommandAudit: "verified-exact-link-only", CrossMember: "verified-exact-link-only",
+			CutoffConsistency: "exact-link", LegacyProjectBinding: "not-recorded", RunRelations: "unsupported",
+			ModelReceipts: "unsupported", BackgroundReceipts: "unsupported", ResourceBodies: "unsupported"}}, nil
+}

internal/app/project_audit_link_test.go

@@ -0,0 +1,184 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	agentcommand "agent-command"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+func TestProjectAuditLinkSharesOnlyVerifiedCommittedMetadata(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "audit.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice at action"); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.EnsureUser("bob", "Bob"); err != nil {
+		t.Fatal(err)
+	}
+	p, err := st.CreateProject("alice", "A")
+	if err != nil {
+		t.Fatal(err)
+	}
+	otherProject, err := st.CreateProject("alice", "B")
+	if err != nil {
+		t.Fatal(err)
+	}
+	c, err := st.CreateConversation("alice", string(p.ID), "private", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := st.AppendAudit("alice", agentcommand.AuditEnvelope{Time: time.Now(), Actor: "alice", CommandID: "rdm.confirm", OperationID: "op-1", ConversationID: string(c.ID), State: agentcommand.StateCommitted, ParamsDigest: "secret-digest"}); err != nil {
+		t.Fatal(err)
+	}
+	private, _, _, err := st.ListProjectCommandAudits("alice", string(p.ID), 0, 0, 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	offset := private[0].Offset
+	slot := &projectAuditSlot{}
+	caps := hostcaps{st: st, projectAudit: slot}
+	reg := pluginRegistry{pluginID: "rdm", caps: caps}
+	auditAllowed := true
+	if err := reg.RegisterProjectAuditAuthorizer(func(actor string, projectID core.ID) (bool, error) {
+		return auditAllowed && actor == "bob" && projectID == p.ID, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	publisherFactory, err := (recordRegistry{Registry: reg}).RegisterProjectAuditLinkVerifier(func(_ context.Context, proof extension.ProjectAuditLinkProof) (bool, error) {
+		return proof.Owner == "alice" && proof.ProjectID == p.ID && proof.SourceKind == "domain-commit" && proof.SourceID == "commit-1" && proof.OperationID == "op-1" && proof.ResourceKind == "document" && proof.ResourceID == "doc-1", nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	metadataAllowed := true
+	if err := reg.RegisterProjectAuditDisclosureAuthorizer(func(_ context.Context, actor string, resource extension.ProjectAuditLinkedResource) (extension.ProjectAuditDisclosure, error) {
+		return extension.ProjectAuditDisclosure{Metadata: metadataAllowed && actor == "bob" && resource.ResourceID == "doc-1"}, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	bob := inprocHost{caps: caps, pluginID: "rdm", owner: "bob", actor: "bob"}
+	q := extension.ProjectAuditQuery{ProjectID: p.ID, LinkedSourceKind: "domain-commit", LinkedSourceID: "commit-1", LinkedHostOffset: offset}
+	if _, err := bob.QueryProjectAudit(context.Background(), q); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("unlinked private audit: %v", err)
+	}
+	alicePublisher, err := publisherFactory.ForOwner("alice") // capability retained by trusted RDM outbox
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, ok := alicePublisher.(extension.Host); ok {
+		t.Fatal("publisher factory exposed a full owner-scoped Host")
+	}
+	linkReq := extension.ProjectAuditLinkRequest{ProjectID: p.ID, SourceKind: "domain-commit", SourceID: "commit-1", OperationID: "op-1", ResourceKind: "document", ResourceID: "doc-1", DisclosureClass: "metadata", IdempotencyKey: "outbox-1"}
+	// A different compiled plugin can call the public scoped-host factory with
+	// "rdm" as text. That must not mint RDM's audit publication authority.
+	wireScopedHostFactory(caps)
+	t.Cleanup(func() { extension.SetScopedHostFactory(nil) })
+	forged, err := extension.NewScopedHost("alice", "rdm")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if publisher, ok := forged.(extension.ProjectAuditPublisher); ok {
+		if _, err := publisher.PublishProjectAuditLink(context.Background(), linkReq); !errors.Is(err, extension.ErrProjectAuditUnsupported) {
+			t.Fatalf("self-reported plugin ID minted audit publisher: %v", err)
+		}
+	}
+	if rows, err := bob.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: p.ID}); err != nil || len(rows.Receipts) != 0 {
+		t.Fatalf("private owner row visible without exact link: %+v %v", rows, err)
+	}
+	wrongProject := linkReq
+	wrongProject.ProjectID = otherProject.ID
+	wrongProject.HostAuditOffset = offset
+	if _, err := alicePublisher.PublishProjectAuditLink(context.Background(), wrongProject); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("wrong host project: %v", err)
+	}
+	uncommitted := linkReq
+	uncommitted.SourceID, uncommitted.IdempotencyKey = "uncommitted", "outbox-uncommitted"
+	if _, err := alicePublisher.PublishProjectAuditLink(context.Background(), uncommitted); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("uncommitted source: %v", err)
+	}
+	if _, err := (pluginRegistry{pluginID: "other", caps: caps}).RegisterProjectAuditLinkVerifier(func(context.Context, extension.ProjectAuditLinkProof) (bool, error) { return true, nil }); err == nil {
+		t.Fatal("other plugin replaced the registered verifier")
+	}
+	pending := linkReq
+	pending.OperationID, pending.IdempotencyKey = "op-not-yet-recorded", "outbox-pending"
+	if _, err := alicePublisher.PublishProjectAuditLink(context.Background(), pending); !errors.Is(err, extension.ErrProjectAuditPending) {
+		t.Fatalf("host receipt race must be retryable: %v", err)
+	}
+	first, err := alicePublisher.PublishProjectAuditLink(context.Background(), linkReq)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if first.HostAuditOffset != offset {
+		t.Fatalf("trusted resolved offset: got %d want %d", first.HostAuditOffset, offset)
+	}
+	retry, err := alicePublisher.PublishProjectAuditLink(context.Background(), linkReq)
+	if err != nil || retry.LinkID != first.LinkID {
+		t.Fatalf("idempotent retry: first=%+v retry=%+v err=%v", first, retry, err)
+	}
+	page, err := bob.QueryProjectAudit(context.Background(), q)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(page.Receipts) != 1 || page.Receipts[0].CommandID != "rdm.confirm" || page.Receipts[0].ActorName != "Alice at action" || page.Receipts[0].ConversationID != "" || page.Coverage.CrossMember != "verified-exact-link-only" {
+		t.Fatalf("linked page: %+v", page)
+	}
+	raw, err := json.Marshal(page)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if strings.Contains(string(raw), "secret-digest") || strings.Contains(string(raw), string(c.ID)) {
+		t.Fatalf("private receipt fields leaked: %s", raw)
+	}
+	if err := st.AppendAudit("alice", agentcommand.AuditEnvelope{Time: time.Now(), Actor: "alice", CommandID: "private.note", OperationID: "op-1", ConversationID: string(c.ID), State: agentcommand.StateCommitted}); err != nil {
+		t.Fatal(err)
+	}
+	duplicates, _, _, err := st.ListProjectCommandAudits("alice", string(p.ID), 0, 0, 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	privateOffset := duplicates[0].Offset
+	mislink := linkReq
+	mislink.HostAuditOffset, mislink.IdempotencyKey = privateOffset, "outbox-private"
+	if _, err := alicePublisher.PublishProjectAuditLink(context.Background(), mislink); !errors.Is(err, extension.ErrProjectAuditLinkConflict) {
+		t.Fatalf("ambiguous operation linked a private command: %v", err)
+	}
+	privateQuery := q
+	privateQuery.LinkedHostOffset = privateOffset
+	if _, err := bob.QueryProjectAudit(context.Background(), privateQuery); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("private command disclosed through ambiguous operation: %v", err)
+	}
+	metadataAllowed = false
+	if _, err := bob.QueryProjectAudit(context.Background(), q); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("revoked object metadata: %v", err)
+	}
+	metadataAllowed, auditAllowed = true, false
+	if _, err := bob.QueryProjectAudit(context.Background(), q); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("revoked audit.read: %v", err)
+	}
+	linkReq.ResourceID = "doc-2"
+	if _, err := alicePublisher.PublishProjectAuditLink(context.Background(), linkReq); !errors.Is(err, extension.ErrProjectAuditLinkConflict) {
+		t.Fatalf("same key different link: %v", err)
+	}
+	metadataAllowed, auditAllowed = true, true
+	if err := st.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := alicePublisher.PublishProjectAuditLink(context.Background(), linkReq); err == nil || errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("storage outage during publish must remain retryable: %v", err)
+	}
+	if _, err := bob.QueryProjectAudit(context.Background(), q); err == nil || errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("storage outage during linked read must be explicit: %v", err)
+	}
+}

internal/app/project_audit_test.go

@@ -0,0 +1,238 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	agentcommand "agent-command"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+func TestProjectAuditHostChecksDomainReadAndProjectsStoredReceipts(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "audit.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	for _, owner := range []string{"alice", "bob"} {
+		if err := st.EnsureUser(owner, strings.ToUpper(owner)); err != nil {
+			t.Fatal(err)
+		}
+	}
+	a, err := st.CreateProject("alice", "A")
+	if err != nil {
+		t.Fatal(err)
+	}
+	b, err := st.CreateProject("alice", "B")
+	if err != nil {
+		t.Fatal(err)
+	}
+	ac, err := st.CreateConversation("alice", string(a.ID), "A", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	bc, err := st.CreateConversation("alice", string(b.ID), "B", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	shared, err := st.CreateConversationInProject("bob", string(a.ID), "A shared", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, item := range []struct{ owner, conversation, command string }{
+		{"alice", string(ac.ID), "a.command"},
+		{"alice", string(bc.ID), "b.command"},
+		{"bob", string(shared.ID), "shared.command"},
+	} {
+		if err := st.AppendAudit(item.owner, agentcommand.AuditEnvelope{Time: time.Now(), Actor: item.owner, CommandID: item.command, ConversationID: item.conversation, State: agentcommand.StateCommitted, ParamsDigest: "sensitive-digest"}); err != nil {
+			t.Fatal(err)
+		}
+	}
+	slot := &projectAuditSlot{}
+	caps := hostcaps{st: st, projectAudit: slot}
+	reg := pluginRegistry{pluginID: "rdm", caps: caps}
+	allowed := true
+	if err := reg.RegisterProjectAuditAuthorizer(func(actor string, projectID core.ID) (bool, error) {
+		return allowed && actor == "bob" && projectID == a.ID, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: caps, owner: "bob", actor: "bob", pluginID: "rdm"}
+	page, err := h.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: a.ID, Limit: 10})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(page.Receipts) != 1 || page.Receipts[0].CommandID != "shared.command" {
+		t.Fatalf("A page: %+v", page)
+	}
+	if page.Coverage.CommandAudit != "actor-owned-project-bound-only" || page.Coverage.CrossMember != "unsupported" || page.Coverage.LegacyProjectBinding != "not-recorded" || page.Coverage.RunRelations != "unsupported" || page.Coverage.ModelReceipts != "unsupported" || page.Coverage.CutoffConsistency != "committed-prefix" {
+		t.Fatalf("coverage: %+v", page.Coverage)
+	}
+	if page.Receipts[0].ActorName != "BOB" {
+		t.Fatalf("actor names: %+v", page.Receipts)
+	}
+	raw, err := json.Marshal(page)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if strings.Contains(string(raw), "sensitive-digest") || strings.Contains(string(raw), "paramsDigest") || strings.Contains(string(raw), "payload") {
+		t.Fatalf("raw audit payload leaked: %s", raw)
+	}
+	if _, err := h.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: b.ID}); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("project B: %v", err)
+	}
+	if _, err := (inprocHost{caps: caps, owner: "bob", actor: "bob", pluginID: "other"}).QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: a.ID}); !errors.Is(err, extension.ErrProjectAuditUnsupported) {
+		t.Fatalf("other plugin: %v", err)
+	}
+	if _, err := (inprocHost{caps: caps, owner: "bob", pluginID: "rdm"}).QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: a.ID}); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("unbound actor: %v", err)
+	}
+	allowed = false
+	if _, err := h.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: a.ID, BeforeOffset: page.NextOffset, CutoffOffset: page.CutoffOffset}); !errors.Is(err, extension.ErrProjectAuditDenied) {
+		t.Fatalf("revoked audit.read: %v", err)
+	}
+}
+
+// A direct explicit ID bypasses the v39 default allocator. This must never
+// yield a committed-prefix page that permanently skips the late lower row.
+func TestProjectAuditPostgresExplicitLowIDCannotHideAcrossPages(t *testing.T) {
+	dsn := os.Getenv("AGENT_PG_TEST_DSN")
+	if dsn == "" {
+		t.Skip("AGENT_PG_TEST_DSN unset: isolated PostgreSQL check NOT_RUN")
+	}
+	admin, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { admin.Close() })
+	if _, err := admin.Exec(`CREATE EXTENSION IF NOT EXISTS pg_trgm`); err != nil {
+		t.Fatal(err)
+	}
+	schema := "w9_" + strings.ToLower(string(store.NewID("audit")))
+	if _, err := admin.Exec(`CREATE SCHEMA ` + schema); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { admin.Exec(`DROP SCHEMA IF EXISTS ` + schema + ` CASCADE`) })
+	st, err := store.OpenPostgres(store.AppendPGRuntimeParam(dsn, "search_path", schema+",public"), filepath.Join(t.TempDir(), "artifacts"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "A")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conversation, err := st.CreateConversation("alice", string(project.ID), "work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, command := range []string{"first", "second"} {
+		if err := st.AppendAudit("alice", agentcommand.AuditEnvelope{Time: time.Now(), Actor: "alice", CommandID: command, ConversationID: string(conversation.ID), State: agentcommand.StateCommitted}); err != nil {
+			t.Fatal(err)
+		}
+	}
+	insert := `INSERT INTO command_audit(time,command_id,source,entrance,state,operation_id,conversation_id,owner,payload,actor_name,project_id)
+		VALUES ($1,$2,'','','committed','',$3,'alice',$4,'Alice',$5) RETURNING id`
+	gap, err := st.DB().Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer gap.Rollback()
+	var gapID int64
+	if err := gap.QueryRow(insert, time.Now().UTC().Format(time.RFC3339Nano), "rolled-back-gap", string(conversation.ID), `{}`, string(project.ID)).Scan(&gapID); err != nil {
+		t.Fatal(err)
+	}
+	if gapID != 3 {
+		t.Fatalf("rollback gap ID=%d want=3", gapID)
+	}
+	if err := gap.Rollback(); err != nil {
+		t.Fatal(err)
+	}
+	a, err := st.DB().Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer a.Rollback()
+	env := agentcommand.AuditEnvelope{Time: time.Now(), Actor: "alice", CommandID: "explicit-late", ConversationID: string(conversation.ID), State: agentcommand.StateCommitted}
+	raw, err := json.Marshal(env)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = a.Exec(`INSERT INTO command_audit(id,time,command_id,source,entrance,state,operation_id,conversation_id,owner,payload,actor_name,project_id)
+		VALUES (3,$1,$2,'','','committed','',$3,'alice',$4,'Alice',$5)`, env.Time.UTC().Format(time.RFC3339Nano), env.CommandID, string(conversation.ID), string(raw), string(project.ID))
+	if err != nil {
+		// Rejecting the online explicit ID is also a safe outcome.
+		t.Logf("online explicit low ID rejected: %v", err)
+		return
+	}
+	slot := &projectAuditSlot{}
+	caps := hostcaps{st: st, projectAudit: slot}
+	reg := pluginRegistry{pluginID: "rdm", caps: caps}
+	if err := reg.RegisterProjectAuditAuthorizer(func(actor string, projectID core.ID) (bool, error) {
+		return actor == "alice" && projectID == project.ID, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: caps, owner: "alice", actor: "alice", pluginID: "rdm"}
+	committed := make(chan error, 1)
+	started := make(chan struct{})
+	go func() {
+		close(started)
+		committed <- st.AppendAudit("alice", agentcommand.AuditEnvelope{Time: time.Now(), Actor: "alice", CommandID: "implicit-high", ConversationID: string(conversation.ID), State: agentcommand.StateCommitted})
+	}()
+	<-started
+	var first extension.ProjectAuditPage
+	highCommittedEarly := false
+	select {
+	case err := <-committed:
+		if err != nil {
+			t.Fatal(err)
+		}
+		highCommittedEarly = true
+	case <-time.After(500 * time.Millisecond):
+	}
+	if highCommittedEarly {
+		first, err = h.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: project.ID, Limit: 2})
+		if err != nil {
+			t.Fatal(err)
+		}
+		if len(first.Receipts) != 2 || first.Receipts[0].SourceOffset != 4 || first.Receipts[1].SourceOffset != 2 || first.CutoffOffset != 4 || first.NextOffset != 2 || first.Coverage.CutoffConsistency != "committed-prefix" {
+			t.Fatalf("counterexample first page changed: %+v", first)
+		}
+	}
+	if err := a.Commit(); err != nil {
+		t.Fatal(err)
+	}
+	if !highCommittedEarly {
+		if err := <-committed; err != nil {
+			t.Fatal(err)
+		}
+		first, err = h.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: project.ID, Limit: 2})
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+	second, err := h.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: project.ID, BeforeOffset: first.NextOffset, CutoffOffset: first.CutoffOffset, Limit: 2})
+	if err != nil {
+		t.Fatal(err)
+	}
+	seen := map[int64]bool{}
+	for _, receipt := range append(first.Receipts, second.Receipts...) {
+		seen[receipt.SourceOffset] = true
+	}
+	if !seen[3] || len(seen) != 4 {
+		t.Fatalf("committed-prefix omitted explicit low ID 3: early=%v first=%+v second=%+v", highCommittedEarly, first, second)
+	}
+}

internal/app/project_context.go

@@ -0,0 +1,355 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"errors"
+	"fmt"
+	"strings"
+	"sync"
+	"time"
+
+	"agent-system-backend/internal/projectcontext"
+	"agent-system-backend/internal/runtime"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+type projectContextSlot struct {
+	mu       sync.RWMutex
+	holder   string
+	provider extension.ProjectContextProvider
+}
+
+func (s *projectContextSlot) active() bool {
+	if s == nil {
+		return false
+	}
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.provider != nil
+}
+
+func requireProjectContextProvider(required bool, slot *projectContextSlot) error {
+	if required && !slot.active() {
+		return errors.New("extension: required project context provider not assembled")
+	}
+	return nil
+}
+
+func (r compiledRegistry) RegisterProjectContextProvider(extension.ProjectContextProvider) error {
+	return errors.New("extension: declarative plugins cannot register project context providers")
+}
+
+func (r pluginRegistry) RegisterProjectContextProvider(p extension.ProjectContextProvider) error {
+	if r.caps.contexts == nil || r.pluginID == "" || p == nil {
+		return errors.New("extension: project context provider unavailable")
+	}
+	slot := r.caps.contexts
+	slot.mu.Lock()
+	defer slot.mu.Unlock()
+	if slot.provider != nil {
+		return errors.New("extension: project context provider already registered")
+	}
+	slot.holder, slot.provider = r.pluginID, p
+	return nil
+}
+
+func (r recordRegistry) RegisterProjectContextProvider(p extension.ProjectContextProvider) error {
+	reg, ok := r.Registry.(extension.ProjectContextRegistry)
+	if !ok {
+		return errors.New("extension: project context registration unavailable")
+	}
+	return reg.RegisterProjectContextProvider(p)
+}
+
+func (s *projectContextSlot) resolve(ctx context.Context, req extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+	if s == nil {
+		return extension.ProjectContextBundle{}, errors.New("extension: project context provider missing")
+	}
+	s.mu.RLock()
+	p, holder := s.provider, s.holder
+	s.mu.RUnlock()
+	if p == nil {
+		return extension.ProjectContextBundle{}, errors.New("extension: project context provider missing")
+	}
+	if req.Actor == "" || req.ProjectID == "" {
+		return extension.ProjectContextBundle{}, errors.New("extension: trusted project scope missing")
+	}
+	req.PluginID = holder
+	bounded, cancel := context.WithTimeout(ctx, 3*time.Second)
+	defer cancel()
+	b, err := p.Resolve(bounded, req)
+	if err != nil {
+		return extension.ProjectContextBundle{}, err
+	}
+	if err := bounded.Err(); err != nil {
+		return extension.ProjectContextBundle{}, err
+	}
+	if b.ProjectID != req.ProjectID || b.Status != extension.ProjectContextReady {
+		return extension.ProjectContextBundle{}, fmt.Errorf("extension: project context unavailable: %s", b.Status)
+	}
+	return b, nil
+}
+
+func (s *projectContextSlot) readEvidence(ctx context.Context, req extension.ProjectEvidenceRequest) (extension.ProjectEvidence, error) {
+	if s == nil || req.Scope.Actor == "" || req.Scope.ProjectID == "" || req.Reference.ID == "" {
+		return extension.ProjectEvidence{}, errors.New("extension: trusted evidence scope missing")
+	}
+	s.mu.RLock()
+	p, holder := s.provider, s.holder
+	s.mu.RUnlock()
+	if p == nil {
+		return extension.ProjectEvidence{}, errors.New("extension: project context provider missing")
+	}
+	req.Scope.PluginID = holder
+	bounded, cancel := context.WithTimeout(ctx, 3*time.Second)
+	defer cancel()
+	evidence, err := p.ReadEvidence(bounded, req)
+	if err != nil {
+		return extension.ProjectEvidence{}, err
+	}
+	if err := bounded.Err(); err != nil {
+		return extension.ProjectEvidence{}, err
+	}
+	if evidence.Reference != req.Reference || len([]rune(evidence.Text)) > req.Scope.BudgetChars {
+		return extension.ProjectEvidence{}, errors.New("extension: project evidence response mismatches reference or budget")
+	}
+	return evidence, nil
+}
+
+func (s *projectContextSlot) recheck(ctx context.Context, req extension.ProjectContextSourceRecheckRequest) (extension.ProjectContextSourceRecheckResult, error) {
+	if s == nil || req.Scope.Actor == "" || req.Scope.ProjectID == "" || req.Scope.Goal != "" {
+		return extension.ProjectContextSourceRecheckResult{}, errors.New("extension: trusted source recheck scope missing")
+	}
+	s.mu.RLock()
+	p, holder := s.provider, s.holder
+	s.mu.RUnlock()
+	rechecker, ok := p.(extension.ProjectContextSourceRechecker)
+	if !ok {
+		return extension.ProjectContextSourceRecheckResult{}, errors.New("extension: project source rechecker unavailable")
+	}
+	req.Scope.PluginID = holder
+	bounded, cancel := context.WithTimeout(ctx, 3*time.Second)
+	defer cancel()
+	result, err := rechecker.Recheck(bounded, req)
+	if err != nil {
+		return extension.ProjectContextSourceRecheckResult{}, err
+	}
+	if err := bounded.Err(); err != nil {
+		return extension.ProjectContextSourceRecheckResult{}, err
+	}
+	if result.Bundle.ProjectID != req.Scope.ProjectID || result.Bundle.Status != extension.ProjectContextReady {
+		return extension.ProjectContextSourceRecheckResult{}, errors.New("extension: project sources no longer authorized")
+	}
+	return result, nil
+}
+
+const workContextBudgetChars = 12000
+
+// TaskCreateForWork fixes the project binding while the authenticated command
+// dispatch still owns its conversation. Legacy TaskCreate has no such binding.
+func (h inprocHost) TaskCreateForWork(kind, title string) (string, error) {
+	if h.actor == "" || h.actor != h.owner || h.pluginID == "" || h.conversationID == "" || h.caps.st == nil || !h.caps.contexts.active() {
+		return "", errors.New("extension: trusted project work dispatch required")
+	}
+	conv, err := h.caps.st.GetConversation(h.owner, string(h.conversationID))
+	if err != nil {
+		return "", err
+	}
+	if conv.ProjectID == "" || (h.hostProjectID != "" && h.hostProjectID != conv.ProjectID) || h.caps.projects == nil || h.caps.projects.work() == nil {
+		return "", errors.New("extension: trusted project work scope missing")
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	allowed, err := h.caps.projects.work()(ctx, h.actor, conv.ProjectID)
+	if err != nil || !allowed {
+		return "", errors.New("extension: project work denied")
+	}
+	task, err := h.caps.st.CreateWorkTask(h.owner, h.pluginID, string(conv.ProjectID), string(conv.ID), kind, title)
+	return task.ID, err
+}
+
+// completeForWork is the dispatch-scoped completion path. The conversation is
+// reloaded so a plugin's goal/target and a stale dispatch project cannot select
+// another project's context. Work authorization is checked on every call.
+func (h inprocHost) CompleteForWork(ctx context.Context, req extension.WorkCompletionRequest) (extension.WorkCompletionResult, error) {
+	if strings.TrimSpace(req.Goal) == "" {
+		return extension.WorkCompletionResult{}, errors.New("extension: work goal required")
+	}
+	if h.caps.st == nil {
+		return extension.WorkCompletionResult{}, errors.New("extension: trusted work store missing")
+	}
+	actor, convID, targetID := h.actor, h.conversationID, string(h.conversationID)
+	var boundProjectID core.ID
+	if actor == "" {
+		if req.TaskID == "" || convID != "" {
+			return extension.WorkCompletionResult{}, errors.New("extension: persisted work task required for scoped host")
+		}
+		binding, err := h.caps.st.WorkTaskScope(h.owner, h.pluginID, req.TaskID)
+		if err != nil {
+			return extension.WorkCompletionResult{}, err
+		}
+		if binding.Status == "done" || binding.Status == "completed" || binding.Status == "failed" || binding.Status == "cancelled" {
+			return extension.WorkCompletionResult{}, errors.New("extension: work task already terminal")
+		}
+		actor, convID, boundProjectID, targetID = binding.Owner, core.ID(binding.ConversationID), core.ID(binding.ProjectID), binding.TaskID
+	} else if actor != h.owner || convID == "" || req.TaskID != "" {
+		return extension.WorkCompletionResult{}, errors.New("extension: trusted work dispatch required")
+	}
+	conv, err := h.caps.st.GetConversation(h.owner, string(convID))
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	if conv.ProjectID == "" || (h.hostProjectID != "" && h.hostProjectID != conv.ProjectID) || (boundProjectID != "" && boundProjectID != conv.ProjectID) {
+		return extension.WorkCompletionResult{}, errors.New("extension: trusted project scope mismatch")
+	}
+	if h.caps.projects == nil || h.caps.projects.work() == nil {
+		return extension.WorkCompletionResult{}, errors.New("extension: project work authorization missing")
+	}
+	allowed, err := h.caps.projects.work()(ctx, actor, conv.ProjectID)
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	if !allowed {
+		return extension.WorkCompletionResult{}, errors.New("extension: project work denied")
+	}
+	requested := extension.ProjectContextRequest{
+		Actor: actor, ProjectID: conv.ProjectID, ConversationID: conv.ID, TaskID: core.ID(req.TaskID),
+		Goal: req.Goal, TargetID: req.TargetID, BudgetChars: workContextBudgetChars,
+	}
+	bundle, err := h.caps.contexts.resolve(ctx, requested)
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	evidenceText, usedEvidence, err := h.readWorkEvidence(ctx, requested, bundle, req.EvidenceRefs)
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	prompt, manifest, err := assembleWorkCompletionWithEvidence(req.Goal, bundle, workContextBudgetChars, evidenceText, usedEvidence)
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	manifest.ProjectID = conv.ProjectID
+	manifest.TaskID = req.TaskID
+	route := runtime.ResolveChatModel(core.AgentProfile{}, h.caps.set.Effective(h.owner, ""))
+	manifest.Model = route.Model
+	if route.Model == "" || route.Base == "" {
+		return extension.WorkCompletionResult{}, errors.New("llm route not configured")
+	}
+	// Resolve can be slow. A member may be revoked while the provider is
+	// assembling summaries, so check the live work policy again at send time.
+	allowed, err = h.caps.projects.work()(ctx, actor, conv.ProjectID)
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	if !allowed {
+		return extension.WorkCompletionResult{}, errors.New("extension: project work denied")
+	}
+	current, err := h.caps.contexts.resolve(ctx, requested)
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	if err := projectcontext.ValidateCurrent(manifest, current); err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	for _, used := range manifest.ReadEvidence {
+		found := false
+		for _, ref := range current.Evidence {
+			if ref.ID != used.ReferenceID || ref.SourceID != used.SourceID || ref.Revision != used.Revision || ref.Hash != used.SourceHash {
+				continue
+			}
+			scope := requested
+			scope.BudgetChars = 8000
+			now, err := h.caps.contexts.readEvidence(ctx, extension.ProjectEvidenceRequest{Scope: scope, Reference: ref})
+			if err != nil {
+				return extension.WorkCompletionResult{}, err
+			}
+			if fmt.Sprintf("%x", sha256.Sum256([]byte(now.Text))) == used.InputSHA256 {
+				found = true
+			}
+			break
+		}
+		if !found {
+			return extension.WorkCompletionResult{}, errors.New("extension: requested work evidence changed before model send")
+		}
+	}
+	attemptID, err := projectcontext.NewAttemptID()
+	if err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	manifest.AttemptID, manifest.Delivery = attemptID, "attempted"
+	if err := h.caps.st.AppendContextManifest(h.owner, targetID, manifest); err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	text, err := completeChat(ctx, route.Base, route.Key, route.Model, prompt)
+	if err != nil {
+		manifest.Delivery = "unknown"
+		_ = h.caps.st.AppendContextManifest(h.owner, targetID, manifest)
+		return extension.WorkCompletionResult{}, err
+	}
+	manifest.Delivery = "responded"
+	if err := h.caps.st.AppendContextManifest(h.owner, targetID, manifest); err != nil {
+		return extension.WorkCompletionResult{}, err
+	}
+	return extension.WorkCompletionResult{Text: text, Manifest: manifest}, nil
+}
+
+func assembleWorkCompletion(goal string, bundle extension.ProjectContextBundle, budget int) (string, extension.ProjectContextManifest, error) {
+	return assembleWorkCompletionWithEvidence(goal, bundle, budget, "", nil)
+}
+
+func assembleWorkCompletionWithEvidence(goal string, bundle extension.ProjectContextBundle, budget int, evidenceText string, used []extension.ProjectContextManifestEntry) (string, extension.ProjectContextManifest, error) {
+	prefix := "Work goal:\n" + goal + "\n\n"
+	ref, m, err := projectcontext.Assemble(bundle, budget-len([]rune(prefix))-len([]rune(evidenceText)))
+	if err != nil {
+		return "", m, err
+	}
+	prompt := prefix + ref + evidenceText
+	m.BudgetChars = budget
+	m.ReadEvidence = used
+	m.InputSHA256 = fmt.Sprintf("%x", sha256.Sum256([]byte(prompt)))
+	return prompt, m, nil
+}
+
+func (h inprocHost) readWorkEvidence(ctx context.Context, scope extension.ProjectContextRequest, bundle extension.ProjectContextBundle, ids []string) (string, []extension.ProjectContextManifestEntry, error) {
+	if len(ids) > 4 {
+		return "", nil, errors.New("extension: too many work evidence references")
+	}
+	var b strings.Builder
+	var used []extension.ProjectContextManifestEntry
+	seen := make(map[string]bool, len(ids))
+	for _, id := range ids {
+		if id == "" || seen[id] {
+			return "", nil, errors.New("extension: invalid or duplicate work evidence reference")
+		}
+		seen[id] = true
+		var selected extension.ProjectEvidenceRef
+		for _, ref := range bundle.Evidence {
+			if ref.ID == id {
+				selected = ref
+				break
+			}
+		}
+		if selected.ID == "" {
+			return "", nil, errors.New("extension: work evidence reference not in current bundle")
+		}
+		readScope := scope
+		readScope.BudgetChars = 8000
+		evidence, err := h.caps.contexts.readEvidence(ctx, extension.ProjectEvidenceRequest{Scope: readScope, Reference: selected})
+		if err != nil {
+			return "", nil, err
+		}
+		b.WriteString("\n[Evidence ")
+		b.WriteString(selected.ID)
+		b.WriteString(" source ")
+		b.WriteString(selected.SourceID)
+		b.WriteString(" revision ")
+		b.WriteString(selected.Revision)
+		b.WriteString("]\n")
+		b.WriteString(evidence.Text)
+		used = append(used, extension.ProjectContextManifestEntry{ReferenceID: selected.ID, SourceID: selected.SourceID, Revision: selected.Revision, SourceHash: selected.Hash,
+			InputSHA256: fmt.Sprintf("%x", sha256.Sum256([]byte(evidence.Text)))})
+	}
+	return b.String(), used, nil
+}

internal/app/project_context_test.go

@@ -0,0 +1,420 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"agent-system-backend/internal/settings"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+type testProjectContextProvider struct {
+	resolve func(extension.ProjectContextRequest) (extension.ProjectContextBundle, error)
+	read    func(extension.ProjectEvidenceRequest) (extension.ProjectEvidence, error)
+}
+
+type testSourceRecheckProvider struct {
+	testProjectContextProvider
+	called *bool
+}
+
+func (p testSourceRecheckProvider) Recheck(ctx context.Context, req extension.ProjectContextSourceRecheckRequest) (extension.ProjectContextSourceRecheckResult, error) {
+	if _, ok := ctx.Deadline(); !ok || req.Scope.PluginID != "rdm" || req.Scope.Actor != "alice" || req.Scope.ProjectID != "p1" || req.Scope.Goal != "" {
+		return extension.ProjectContextSourceRecheckResult{}, fmt.Errorf("untrusted or unbounded recheck scope")
+	}
+	*p.called = true
+	return extension.ProjectContextSourceRecheckResult{Bundle: extension.ProjectContextBundle{Status: extension.ProjectContextReady, ProjectID: req.Scope.ProjectID}}, nil
+}
+
+func TestProjectSourceRecheckUsesSameRegisteredProviderAndDeadline(t *testing.T) {
+	called := false
+	slot := &projectContextSlot{}
+	provider := testSourceRecheckProvider{called: &called}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: slot}}).RegisterProjectContextProvider(provider); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := slot.recheck(context.Background(), extension.ProjectContextSourceRecheckRequest{Scope: extension.ProjectContextRequest{Actor: "alice", ProjectID: "p1"}}); err != nil || !called {
+		t.Fatalf("registered source rechecker unavailable: called=%v err=%v", called, err)
+	}
+	if _, err := slot.recheck(context.Background(), extension.ProjectContextSourceRecheckRequest{Scope: extension.ProjectContextRequest{Actor: "alice", ProjectID: "p1", Goal: "OLD_RESTRICTED_BODY"}}); err == nil {
+		t.Fatal("raw Goal entered source recheck provider")
+	}
+	cancelled, cancel := context.WithCancel(context.Background())
+	cancel()
+	if _, err := slot.recheck(cancelled, extension.ProjectContextSourceRecheckRequest{Scope: extension.ProjectContextRequest{Actor: "alice", ProjectID: "p1"}}); err == nil {
+		t.Fatal("cancelled source recheck returned authorized context")
+	}
+	legacy := &projectContextSlot{}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: legacy}}).RegisterProjectContextProvider(testProjectContextProvider{}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := legacy.recheck(context.Background(), extension.ProjectContextSourceRecheckRequest{Scope: extension.ProjectContextRequest{Actor: "alice", ProjectID: "p1"}}); err == nil {
+		t.Fatal("provider without optional rechecker silently accepted old sources")
+	}
+}
+
+type deadlineContextProvider struct{ sawDeadline *bool }
+
+func (p deadlineContextProvider) Resolve(ctx context.Context, req extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+	_, *p.sawDeadline = ctx.Deadline()
+	return extension.ProjectContextBundle{Status: extension.ProjectContextReady, ProjectID: req.ProjectID}, nil
+}
+func (p deadlineContextProvider) ReadEvidence(ctx context.Context, req extension.ProjectEvidenceRequest) (extension.ProjectEvidence, error) {
+	_, *p.sawDeadline = ctx.Deadline()
+	return extension.ProjectEvidence{Reference: req.Reference, Text: "detail"}, nil
+}
+
+func TestProjectContextProviderCallsHaveBoundedDeadline(t *testing.T) {
+	seen := false
+	slot := &projectContextSlot{}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: slot}}).RegisterProjectContextProvider(deadlineContextProvider{sawDeadline: &seen}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := slot.resolve(context.Background(), extension.ProjectContextRequest{Actor: "alice", ProjectID: "p1"}); err != nil || !seen {
+		t.Fatalf("Resolve missing bounded context: seen=%v err=%v", seen, err)
+	}
+	seen = false
+	if _, err := slot.readEvidence(context.Background(), extension.ProjectEvidenceRequest{Scope: extension.ProjectContextRequest{Actor: "alice", ProjectID: "p1", BudgetChars: 100}, Reference: extension.ProjectEvidenceRef{ID: "r1"}}); err != nil || !seen {
+		t.Fatalf("ReadEvidence missing bounded context: seen=%v err=%v", seen, err)
+	}
+}
+
+func (p testProjectContextProvider) Resolve(_ context.Context, req extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+	return p.resolve(req)
+}
+
+func (p testProjectContextProvider) ReadEvidence(_ context.Context, req extension.ProjectEvidenceRequest) (extension.ProjectEvidence, error) {
+	if p.read != nil {
+		return p.read(req)
+	}
+	return extension.ProjectEvidence{}, nil
+}
+
+func TestProjectContextRegistryOptionalAndSingleOwner(t *testing.T) {
+	slot := &projectContextSlot{}
+	reg := recordRegistry{Registry: pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: slot}}}
+	optional, ok := any(reg).(extension.ProjectContextRegistry)
+	if !ok {
+		t.Fatal("record registry hides optional project context registration")
+	}
+	provider := testProjectContextProvider{resolve: func(extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+		return extension.ProjectContextBundle{Status: extension.ProjectContextReady}, nil
+	}}
+	if err := optional.RegisterProjectContextProvider(provider); err != nil {
+		t.Fatal(err)
+	}
+	if err := optional.RegisterProjectContextProvider(provider); err == nil {
+		t.Fatal("duplicate provider replaced the first provider")
+	}
+	if err := (compiledRegistry{}).RegisterProjectContextProvider(provider); err == nil {
+		t.Fatal("declarative provider accepted")
+	}
+}
+
+func TestRequiredProjectContextFailsWhenProviderNotAssembled(t *testing.T) {
+	slot := &projectContextSlot{}
+	if err := requireProjectContextProvider(true, slot); err == nil {
+		t.Fatal("required project context silently degraded")
+	}
+	if err := requireProjectContextProvider(false, slot); err != nil {
+		t.Fatalf("optional legacy path blocked: %v", err)
+	}
+	provider := testProjectContextProvider{resolve: func(extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+		return extension.ProjectContextBundle{}, nil
+	}}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: slot}}).RegisterProjectContextProvider(provider); err != nil {
+		t.Fatal(err)
+	}
+	if err := requireProjectContextProvider(true, slot); err != nil {
+		t.Fatalf("registered provider rejected: %v", err)
+	}
+}
+
+func TestCompleteForWorkUsesStoredScopeAndActualInputManifest(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "test.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	p, err := st.CreateProject("alice", "Project")
+	if err != nil {
+		t.Fatal(err)
+	}
+	other, err := st.CreateProject("alice", "Other")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", p.ID, "Work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var sent string
+	modelCalls := 0
+	model := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		modelCalls++
+		var payload struct {
+			Messages []struct {
+				Content string `json:"content"`
+			} `json:"messages"`
+		}
+		if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
+			t.Error(err)
+		}
+		for _, m := range payload.Messages {
+			sent += m.Content
+		}
+		_, _ = w.Write([]byte(`{"choices":[{"message":{"content":"done"}}]}`))
+	}))
+	defer model.Close()
+	set := settings.NewService(st)
+	set.SetSystemOverride(map[string]any{"models": map[string]any{"chat": map[string]any{"baseUrl": model.URL, "model": "test-model"}}})
+	projects := &projectLifecycleSlot{}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{projects: projects}}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
+		t.Fatal(err)
+	}
+	contexts := &projectContextSlot{}
+	called := 0
+	oversized := false
+	revokeDuringResolve := false
+	revokeDocDuringResolve := false
+	authEpoch := "duty-1"
+	provider := testProjectContextProvider{resolve: func(req extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+		called++
+		if req.Actor != "alice" || req.ProjectID != core.ID(p.ID) || req.ConversationID != core.ID(conv.ID) || req.PluginID != "rdm" {
+			t.Errorf("untrusted scope: %+v", req)
+		}
+		item := extension.ProjectContextItem{SourceID: "decision-1", Revision: "r3", Hash: "source-hash", Text: "Authorized summary", Required: true}
+		if oversized {
+			item.Text = strings.Repeat("x", workContextBudgetChars+1)
+		}
+		if revokeDuringResolve {
+			projects.mu.Lock()
+			projects.provider.Work = func(context.Context, string, core.ID) (bool, error) { return false, nil }
+			projects.mu.Unlock()
+		}
+		epoch := authEpoch
+		if revokeDocDuringResolve {
+			authEpoch = "duty-2"
+			revokeDocDuringResolve = false
+		}
+		return extension.ProjectContextBundle{Status: extension.ProjectContextReady, ProjectID: core.ID(p.ID), Version: "v7", AuthorizationEpoch: epoch, Items: []extension.ProjectContextItem{item}}, nil
+	}}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: contexts}}).RegisterProjectContextProvider(provider); err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: hostcaps{st: st, set: set, projects: projects, contexts: contexts}, pluginID: "rdm", owner: "alice", actor: "alice", conversationID: conv.ID, hostProjectID: p.ID}
+	work := any(h).(extension.WorkCompletionHost)
+	result, err := work.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result.Text != "done" || !strings.Contains(sent, "Authorized summary") || !strings.Contains(sent, "Draft report") || result.Manifest.InputSHA256 == "" || len(result.Manifest.Included) != 1 {
+		t.Fatalf("input or manifest mismatch: result=%+v sent=%q", result, sent)
+	}
+	if want := fmt.Sprintf("%x", sha256.Sum256([]byte(sent))); result.Manifest.InputSHA256 != want {
+		t.Fatalf("manifest input hash %q differs from actual request content hash %q", result.Manifest.InputSHA256, want)
+	}
+	if got, want := result.Manifest.Included[0].InputSHA256, fmt.Sprintf("%x", sha256.Sum256([]byte("Authorized summary"))); got != want || result.Manifest.Included[0].SourceHash != "source-hash" {
+		t.Fatalf("manifest does not distinguish source hash and actual text hash: %+v", result.Manifest.Included[0])
+	}
+	if called != 2 {
+		t.Fatalf("provider called %d times, want initial and pre-send reads", called)
+	}
+	stored, err := st.ListContextManifests("alice", string(conv.ID))
+	if err != nil || len(stored) != 2 || stored[0].Delivery != "attempted" || stored[1].Delivery != "responded" || stored[0].AttemptID != stored[1].AttemptID || stored[1].InputSHA256 != result.Manifest.InputSHA256 {
+		t.Fatalf("work completion manifest not persisted: got=%+v err=%v", stored, err)
+	}
+	h.hostProjectID = other.ID
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"}); err == nil || called != 2 {
+		t.Fatal("forged project scope reached provider")
+	}
+	h.hostProjectID = p.ID
+	h.conversationID = ""
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"}); err == nil || called != 2 {
+		t.Fatal("scoped host without dispatch scope reached provider")
+	}
+	h.conversationID = conv.ID
+	projects.mu.Lock()
+	projects.provider.Work = func(context.Context, string, core.ID) (bool, error) { return false, nil }
+	projects.mu.Unlock()
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"}); err == nil || called != 2 {
+		t.Fatal("revoked project work reached provider")
+	}
+	projects.mu.Lock()
+	projects.provider.Work = func(context.Context, string, core.ID) (bool, error) { return true, nil }
+	projects.mu.Unlock()
+	oversized = true
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"}); err == nil || modelCalls != 1 {
+		t.Fatal("required context was dropped and model still called")
+	}
+	oversized = false
+	revokeDuringResolve = true
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"}); err == nil || modelCalls != 1 {
+		t.Fatal("revocation during context resolution reached model")
+	}
+	projects.mu.Lock()
+	projects.provider.Work = func(context.Context, string, core.ID) (bool, error) { return true, nil }
+	projects.mu.Unlock()
+	revokeDuringResolve = false
+	revokeDocDuringResolve = true
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Draft report"}); err == nil || modelCalls != 1 {
+		t.Fatal("document duty revoked while project membership remains reached model")
+	}
+	taskHost := any(h).(extension.WorkTaskHost)
+	taskID, err := taskHost.TaskCreateForWork("compose", "Draft report")
+	if err != nil {
+		t.Fatal(err)
+	}
+	scoped := inprocHost{caps: h.caps, pluginID: "rdm", owner: "alice"}
+	if _, err := scoped.TaskCreateForWork("compose", "Forged"); err == nil {
+		t.Fatal("scoped host created a work task without dispatch scope")
+	}
+	if _, err := scoped.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Resume report", TaskID: taskID}); err != nil || modelCalls != 2 {
+		t.Fatalf("persisted plugin task did not restore trusted work scope: err=%v calls=%d", err, modelCalls)
+	}
+	otherPlugin := inprocHost{caps: h.caps, pluginID: "other", owner: "alice"}
+	if _, err := otherPlugin.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Steal task", TaskID: taskID}); err == nil || modelCalls != 2 {
+		t.Fatal("other plugin reused task binding")
+	}
+	otherOwner := inprocHost{caps: h.caps, pluginID: "rdm", owner: "bob"}
+	if _, err := otherOwner.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Steal task", TaskID: taskID}); err == nil || modelCalls != 2 {
+		t.Fatal("other owner reused task binding")
+	}
+	legacyTaskID, err := h.TaskCreate("legacy", "Unbound", string(conv.ID))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := scoped.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Old task", TaskID: legacyTaskID}); err == nil || modelCalls != 2 {
+		t.Fatal("old unbound task was treated as trusted work scope")
+	}
+	if _, err := st.DB().Exec(`UPDATE conversations SET project_id=? WHERE id=?`, other.ID, conv.ID); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := scoped.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Moved project", TaskID: taskID}); err == nil || modelCalls != 2 {
+		t.Fatal("task silently followed a conversation to another project")
+	}
+}
+
+func TestWorkContextBudgetKeepsRequiredEvidenceFirst(t *testing.T) {
+	bundle := extension.ProjectContextBundle{Status: extension.ProjectContextReady, ProjectID: "project-1", Items: []extension.ProjectContextItem{
+		{SourceID: "optional", Revision: "r1", Hash: "h1", Text: "12345678"},
+		{SourceID: "required", Revision: "r1", Hash: "h2", Text: "must keep", Required: true},
+	}}
+	prompt, manifest, err := assembleWorkCompletion("goal", bundle, 140)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(prompt, "must keep") || strings.Contains(prompt, "12345678") {
+		t.Fatalf("required evidence lost to optional evidence: %q", prompt)
+	}
+	if len([]rune(prompt)) > 140 {
+		t.Fatalf("final prompt exceeded the budget: %d", len([]rune(prompt)))
+	}
+	if len(manifest.Included) != 1 || manifest.Included[0].SourceID != "required" || len(manifest.Dropped) != 1 || manifest.Dropped[0].SourceID != "optional" {
+		t.Fatalf("manifest does not match selected input: %+v", manifest)
+	}
+}
+
+func TestCompleteForWorkReadsOnlyCurrentBundleEvidence(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "evidence.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	p, err := st.CreateProject("alice", "P")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", p.ID, "C", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var sent []string
+	model := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var body struct {
+			Messages []struct {
+				Content string `json:"content"`
+			} `json:"messages"`
+		}
+		_ = json.NewDecoder(r.Body).Decode(&body)
+		var input string
+		for _, m := range body.Messages {
+			input += m.Content
+		}
+		sent = append(sent, input)
+		_, _ = w.Write([]byte(`{"choices":[{"message":{"content":"done"}}]}`))
+	}))
+	defer model.Close()
+	set := settings.NewService(st)
+	set.SetSystemOverride(map[string]any{"models": map[string]any{"chat": map[string]any{"baseUrl": model.URL, "model": "test-model"}}})
+	projects := &projectLifecycleSlot{}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{projects: projects}}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
+		t.Fatal(err)
+	}
+	contexts := &projectContextSlot{}
+	ref := extension.ProjectEvidenceRef{ID: "ref-1", SourceID: "doc-1", Revision: "r2", Hash: "source-hash"}
+	readCalls := 0
+	readText, authEpoch := "current restricted detail", "duty-1"
+	provider := testProjectContextProvider{
+		resolve: func(req extension.ProjectContextRequest) (extension.ProjectContextBundle, error) {
+			return extension.ProjectContextBundle{Status: extension.ProjectContextReady, ProjectID: req.ProjectID, AuthorizationEpoch: authEpoch, PublicationEpoch: "pub-1", Evidence: []extension.ProjectEvidenceRef{ref}}, nil
+		},
+		read: func(req extension.ProjectEvidenceRequest) (extension.ProjectEvidence, error) {
+			readCalls++
+			if req.Reference != ref || req.Scope.ProjectID != core.ID(p.ID) {
+				t.Errorf("untrusted evidence scope: %+v", req)
+			}
+			return extension.ProjectEvidence{Reference: req.Reference, Text: readText}, nil
+		},
+	}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{contexts: contexts}}).RegisterProjectContextProvider(provider); err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: hostcaps{st: st, set: set, projects: projects, contexts: contexts}, pluginID: "rdm", owner: "alice", actor: "alice", conversationID: conv.ID, hostProjectID: p.ID}
+	result, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Write", EvidenceRefs: []string{"ref-1"}})
+	if err != nil || len(sent) != 1 || !strings.Contains(sent[0], "current restricted detail") || len(result.Manifest.ReadEvidence) != 1 || readCalls != 2 {
+		t.Fatalf("requested evidence did not reach model under reauthorization: err=%v sent=%q manifest=%+v reads=%d", err, sent, result.Manifest, readCalls)
+	}
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Write", EvidenceRefs: []string{"arbitrary-path"}}); err == nil || readCalls != 2 {
+		t.Fatal("arbitrary evidence reference reached provider")
+	}
+	readText, authEpoch = "new public detail", "duty-2"
+	if _, err := h.CompleteForWork(context.Background(), extension.WorkCompletionRequest{Goal: "Write", EvidenceRefs: []string{"ref-1"}}); err != nil || len(sent) != 2 || strings.Contains(sent[1], "current restricted detail") || !strings.Contains(sent[1], "new public detail") {
+		t.Fatalf("same Host reused old evidence after duty change: err=%v sent=%q", err, sent)
+	}
+}
+
+func TestPluginAuditCannotForgeOrCorruptContextManifest(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "manifest.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	good := extension.ProjectContextManifest{ProjectID: "p1", AttemptID: "attempt-1", Delivery: "attempted", InputSHA256: "sha-good"}
+	if err := st.AppendContextManifest("alice", "run-1", good); err != nil {
+		t.Fatal(err)
+	}
+	h := inprocHost{caps: hostcaps{st: st}, pluginID: "malicious", owner: "alice"}
+	if err := h.Audit("model.context_manifest", "run-1", `{"Delivery":"responded","InputSHA256":"forged"}`); err == nil {
+		t.Fatal("plugin forged a trusted model manifest action")
+	}
+	if err := st.AppendAuditEvent(store.AuditEvent{Owner: "alice", Action: "model.context_manifest", Target: "run-1", Evidence: "not-json"}); err != nil {
+		t.Fatal(err)
+	}
+	got, err := st.ListContextManifests("alice", "run-1")
+	if err != nil || len(got) != 1 || got[0].InputSHA256 != "sha-good" {
+		t.Fatalf("untrusted audit row corrupted manifest reader: got=%+v err=%v", got, err)
+	}
+}

internal/app/project_lifecycle.go

@@ -51,7 +51,7 @@ func (slot *projectLifecycleSlot) wire(srv *server.Server, caps hostcaps) {
 	}
 	holder := slot.holder
 	srv.SetProjectLifecycle(*slot.provider, func(owner string) extension.Host {
-		return inprocHost{caps: caps, owner: owner, actor: owner, pluginID: holder}
+		return requestBoundHost{inprocHost{caps: caps, owner: owner, actor: owner, pluginID: holder}}
 	})
 }
 
@@ -84,6 +84,9 @@ func (slot *projectLifecycleSlot) resolve(ctx context.Context, caps hostcaps, ow
 var _ extension.ProjectHost = inprocHost{}
 
 func (h inprocHost) OwnedProjects() ([]core.Project, error) {
+	if err := h.requireEffective(); err != nil {
+		return nil, err
+	}
 	ps, err := h.caps.st.ListProjects(h.owner)
 	for i := range ps {
 		ps[i].Owner = h.owner
@@ -91,9 +94,15 @@ func (h inprocHost) OwnedProjects() ([]core.Project, error) {
 	return ps, err
 }
 func (h inprocHost) OwnedProject(id string) (core.Project, error) {
+	if err := h.requireEffective(); err != nil {
+		return core.Project{}, err
+	}
 	return h.caps.st.GetProject(h.owner, id)
 }
 func (h inprocHost) ProjectMetadata(id string) (core.Project, error) {
+	if err := h.requireEffective(); err != nil {
+		return core.Project{}, err
+	}
 	p, err := h.caps.st.ProjectMetadata(id)
 	if err != nil {
 		return core.Project{}, err
@@ -114,11 +123,29 @@ func (h inprocHost) ProjectMetadata(id string) (core.Project, error) {
 	return p, nil
 }
 func (h inprocHost) EnsureProject(id, name string) (core.Project, error) {
-	return h.caps.st.EnsureProject(h.owner, id, name)
+	if err := h.requireEffective(); err != nil {
+		return core.Project{}, err
+	}
+	if h.actor != "" && h.actor != h.owner {
+		return core.Project{}, store.ErrAccountForbidden
+	}
+	// A creator-scoped Host is the approved I1 projection capability. RDM
+	// authorizes a delegated operator before invoking it; cross-database
+	// commit fencing remains outside U3's guarantee.
+	return h.caps.st.EnsureProjectAccountChecked(h.owner, h.owner, id, name, h.caps.allowImplicitLocal)
 }
 func (h inprocHost) RenameOwnedProject(id, name string) (core.Project, error) {
-	return h.caps.st.RenameOwnedProject(h.owner, id, name)
+	if err := h.requireEffective(); err != nil {
+		return core.Project{}, err
+	}
+	if h.actor != "" && h.actor != h.owner {
+		return core.Project{}, store.ErrAccountForbidden
+	}
+	return h.caps.st.RenameOwnedProjectAccountChecked(h.owner, h.owner, id, name, h.caps.allowImplicitLocal)
 }
 func (h inprocHost) ProjectNameAvailable(name, exceptID string) (bool, error) {
+	if err := h.requireEffective(); err != nil {
+		return false, err
+	}
 	return h.caps.st.ProjectNameAvailable(name, exceptID)
 }

internal/app/project_lifecycle_test.go

@@ -11,7 +11,12 @@ import (
 	"encoding/json"
 	"errors"
 	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync/atomic"
 	"testing"
+	"time"
 )
 
 func completeLifecycle() extension.ProjectLifecycle {
@@ -55,6 +60,11 @@ func TestProjectHostMetadataDoesNotGrantMutation(t *testing.T) {
 		t.Fatal(err)
 	}
 	defer st.Close()
+	for _, owner := range []string{"alice", "bob"} {
+		if err := st.EnsureUser(owner, ""); err != nil {
+			t.Fatal(err)
+		}
+	}
 	alice := inprocHost{owner: "alice", caps: hostcaps{st: st}}
 	p, err := alice.EnsureProject("stable", "Shared")
 	if err != nil {
@@ -131,6 +141,9 @@ func TestProjectHostMetadataMasksSharedSecretsWithoutMutation(t *testing.T) {
 	srv := server.New(st, nil, nil, nil, svc, nil)
 	srv.Auth = server.NewAuthenticator(st, true)
 	slot.wire(srv, caps)
+	if err := st.EnsureUser("bob", ""); err != nil {
+		t.Fatal(err)
+	}
 	key, err := st.CreateAPIKey("bob", "test")
 	if err != nil {
 		t.Fatal(err)
@@ -161,3 +174,180 @@ func TestProjectHostMetadataMasksSharedSecretsWithoutMutation(t *testing.T) {
 		t.Fatal("metadata read mutated persisted owner settings")
 	}
 }
+
+func TestRequestBoundDelegatedProjectionFencesRealOperator(t *testing.T) {
+	st, err := store.OpenSQLite(t.TempDir() + "/delegated-project.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	for _, account := range []struct {
+		owner string
+		admin bool
+	}{{"admin", true}, {"alice", false}, {"bob", false}} {
+		if err := st.CreateAccount(account.owner, "", "", account.admin); err != nil {
+			t.Fatal(err)
+		}
+	}
+	project, err := st.CreateProject("alice", "original")
+	if err != nil {
+		t.Fatal(err)
+	}
+	guard := accountEffectiveAuthorization(st, true)
+	check := func(owner string) error {
+		valid, err := guard(context.Background(), owner)
+		if err != nil {
+			return err
+		}
+		if !valid {
+			return store.ErrAccountForbidden
+		}
+		return nil
+	}
+	slot := &projectLifecycleSlot{}
+	caps := hostcaps{st: st, projects: slot, accountGuard: check}
+	if err := (pluginRegistry{pluginID: "rdm", caps: caps}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
+		t.Fatal(err)
+	}
+	request := requestBoundHost{inprocHost{caps: caps, pluginID: "rdm", owner: "bob", actor: "bob"}}
+	delegator, ok := any(request).(interface {
+		ProjectProjectionForCreator(creator, projectID string) (extension.ProjectHost, error)
+	})
+	if !ok {
+		t.Fatal("request-bound delegated projection capability missing")
+	}
+	projection, err := delegator.ProjectProjectionForCreator("alice", string(project.ID))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if projection.Owner() != "alice" {
+		t.Fatalf("trusted projection owner=%s", projection.Owner())
+	}
+	if _, ok := projection.(extension.Host); ok {
+		t.Fatal("single-project projection exposed broad creator Host capabilities")
+	}
+	if _, err := projection.RenameOwnedProject(string(project.ID), "delegated"); err != nil {
+		t.Fatalf("active delegated rename: %v", err)
+	}
+	if _, err := projection.RenameOwnedProject("another-project", "hijack"); !errors.Is(err, store.ErrNotFound) {
+		t.Fatalf("projection escaped bound project: %v", err)
+	}
+	if _, err := projection.EnsureProject("another-project", "hijack"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("projection created another project: %v", err)
+	}
+	bob, err := st.GetAccountByOwner("bob")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.SetAccountEnabled("admin", bob.ID, bob.StateVersion, false); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := projection.RenameOwnedProject(string(project.ID), "late"); !errors.Is(err, store.ErrAccountForbidden) {
+		t.Fatalf("disabled real operator renamed creator project: %v", err)
+	}
+	got, err := st.ProjectMetadata(string(project.ID))
+	if err != nil || got.Name != "delegated" {
+		t.Fatalf("late rename changed project: %+v %v", got, err)
+	}
+}
+
+func TestDelegatedProjectionRejectsDisableBetweenEarlyCheckAndWrite(t *testing.T) {
+	var st, other *store.Store
+	var err error
+	if baseDSN := os.Getenv("AGENT_PG_TEST_DSN"); baseDSN != "" {
+		st = openDirectoryTestStore(t)
+		if err := st.EnsureSystemIdentity("u3-delegated-projection", "pg"); err != nil {
+			t.Fatal(err)
+		}
+		var schema string
+		if err := st.DB().QueryRow(`SELECT current_schema()`).Scan(&schema); err != nil {
+			t.Fatal(err)
+		}
+		separator := "?"
+		if strings.Contains(baseDSN, "?") {
+			separator = "&"
+		}
+		other, err = store.OpenExistingPostgres(baseDSN+separator+"search_path="+schema+",public", filepath.Join(t.TempDir(), "other-artifacts"))
+	} else {
+		db := filepath.Join(t.TempDir(), "shared.db")
+		st, err = store.OpenSQLite(db)
+		if err == nil {
+			other, err = store.OpenExistingSQLite(db)
+		}
+		if st != nil {
+			defer st.Close()
+		}
+	}
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer other.Close()
+	for _, account := range []struct {
+		owner string
+		admin bool
+	}{{"admin", true}, {"alice", false}, {"bob", false}} {
+		if err := st.CreateAccount(account.owner, "", "", account.admin); err != nil {
+			t.Fatal(err)
+		}
+	}
+	project, err := st.CreateProject("alice", "before")
+	if err != nil {
+		t.Fatal(err)
+	}
+	entered, release := make(chan struct{}), make(chan struct{})
+	var bobChecks atomic.Int32
+	check := func(owner string) error {
+		state, err := st.GetUserAuthState(owner)
+		if err != nil {
+			return err
+		}
+		if !state.Enabled {
+			return store.ErrAccountForbidden
+		}
+		if owner == "bob" && bobChecks.Add(1) == 2 {
+			close(entered)
+			<-release
+		}
+		return nil
+	}
+	slot := &projectLifecycleSlot{}
+	caps := hostcaps{st: st, projects: slot, accountGuard: check}
+	if err := (pluginRegistry{pluginID: "rdm", caps: caps}).RegisterProjectLifecycle(completeLifecycle()); err != nil {
+		t.Fatal(err)
+	}
+	host := requestBoundHost{inprocHost{caps: caps, pluginID: "rdm", owner: "bob", actor: "bob"}}
+	projection, err := host.ProjectProjectionForCreator("alice", string(project.ID))
+	if err != nil {
+		t.Fatal(err)
+	}
+	written := make(chan error, 1)
+	go func() {
+		_, err := projection.RenameOwnedProject(string(project.ID), "late")
+		written <- err
+	}()
+	select {
+	case <-entered:
+	case <-time.After(3 * time.Second):
+		t.Fatal("rename did not reach paused early account check")
+	}
+	bob, err := st.GetAccountByOwner("bob")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := other.SetAccountEnabled("admin", bob.ID, bob.StateVersion, false); err != nil {
+		t.Fatal(err)
+	}
+	close(release)
+	select {
+	case err := <-written:
+		if !errors.Is(err, store.ErrAccountForbidden) {
+			t.Fatalf("late delegated rename committed: %v", err)
+		}
+	case <-time.After(3 * time.Second):
+		t.Fatal("late rename did not return")
+	}
+	got, err := st.ProjectMetadata(string(project.ID))
+	if err != nil || got.Name != "before" {
+		t.Fatalf("project changed after disable: %+v %v", got, err)
+	}
+}

internal/app/project_work_observation.go

@@ -0,0 +1,381 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"sync"
+
+	"agent-system-backend/internal/runmgr"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+type projectWorkObserverSlot struct {
+	mu       sync.RWMutex
+	provider *extension.ProjectWorkObserver
+}
+
+func (s *projectWorkObserverSlot) get() *extension.ProjectWorkObserver {
+	if s == nil {
+		return nil
+	}
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	if s.provider == nil {
+		return nil
+	}
+	copy := *s.provider
+	return &copy
+}
+
+func (s *projectWorkObserverSlot) active() bool { return s.get() != nil }
+
+func wireProjectWorkGate(mgr *runmgr.Manager, st *store.Store, caps hostcaps, slot *projectWorkObserverSlot,
+	work func(context.Context, string, core.ID) (bool, error),
+) {
+	provider := slot.get()
+	if provider == nil || work == nil {
+		return
+	}
+	verify := func(ctx context.Context, row store.ProjectWorkObservationRow) error {
+		switch row.SourceKind {
+		case "retrieval-hit":
+			return verifyProjectKnowledgeObservation(ctx, caps, row)
+		case "tool-result", "visible-analysis":
+			return verifyProjectTransientObservation(ctx, st, row)
+		default:
+			return fmt.Errorf("project work source %s: unsupported run source kind %q", row.EventID, row.SourceKind)
+		}
+	}
+	mgr.SetProjectWorkGate(
+		func(ctx context.Context, runID, action string) (extension.ProjectWorkDecision, error) {
+			return preflightProjectRun(ctx, st, slot, work, verify, runID, action)
+		},
+		provider.Respond,
+	)
+}
+
+func (r compiledRegistry) RegisterProjectWorkObserver(extension.ProjectWorkObserver) error {
+	return errors.New("extension: declarative plugins cannot register project work observers")
+}
+
+func (r pluginRegistry) RegisterProjectWorkObserver(p extension.ProjectWorkObserver) error {
+	if r.pluginID != "rdm" || r.caps.workObserver == nil {
+		return errors.New("extension: project work observer requires trusted RDM registration")
+	}
+	if p.Observe == nil || p.Preflight == nil || p.Respond == nil {
+		return errors.New("extension: project work observer requires all callbacks")
+	}
+	s := r.caps.workObserver
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.provider != nil {
+		return errors.New("extension: project work observer already registered")
+	}
+	copy := p
+	s.provider = &copy
+	return nil
+}
+
+func (r recordRegistry) RegisterProjectWorkObserver(p extension.ProjectWorkObserver) error {
+	reg, ok := r.Registry.(extension.ProjectWorkObservationRegistry)
+	if !ok {
+		return errors.New("extension: project work observation registration unavailable")
+	}
+	return reg.RegisterProjectWorkObserver(p)
+}
+
+// deliverProjectWorkObservations replays only committed source parts, rechecking
+// their owner and current project work authority before disclosing text to RDM.
+// An Observe ACK is an intake receipt, not a preflight or publication decision.
+// Failures leave the row pending for a later idempotent retry.
+func deliverProjectWorkObservations(ctx context.Context, st *store.Store, slot *projectWorkObserverSlot,
+	work func(context.Context, string, core.ID) (bool, error), limit int, verify ...func(context.Context, store.ProjectWorkObservationRow) error,
+) (int, error) {
+	provider := slot.get()
+	if provider == nil || work == nil {
+		return 0, errors.New("extension: trusted project work observer unavailable")
+	}
+	rows, err := st.PendingProjectWorkObservations(limit)
+	if err != nil {
+		return 0, err
+	}
+	return deliverProjectWorkRows(ctx, st, provider, work, rows, verify...)
+}
+
+func deliverProjectWorkRows(ctx context.Context, st *store.Store, provider *extension.ProjectWorkObserver,
+	work func(context.Context, string, core.ID) (bool, error), rows []store.ProjectWorkObservationRow,
+	verify ...func(context.Context, store.ProjectWorkObservationRow) error,
+) (int, error) {
+	completed := 0
+	for _, row := range rows {
+		if row.State != "pending" {
+			continue
+		}
+		if row.SourceKind != "user-message" && row.SourceKind != "assistant-message" {
+			if len(verify) != 1 || verify[0] == nil {
+				return completed, fmt.Errorf("project work source %s: current resource status verifier unavailable", row.EventID)
+			}
+			if err := verify[0](ctx, row); err != nil {
+				return completed, err
+			}
+		}
+		if err := ctx.Err(); err != nil {
+			return completed, err
+		}
+		conv, err := st.GetConversation(row.Owner, row.ConversationID)
+		if err != nil || string(conv.ProjectID) != row.ProjectID {
+			return completed, fmt.Errorf("project work source %s: current conversation binding unavailable", row.EventID)
+		}
+		allowed, err := work(ctx, row.Owner, core.ID(row.ProjectID))
+		if err != nil || !allowed {
+			return completed, fmt.Errorf("project work source %s: current project authorization denied", row.EventID)
+		}
+		account, err := st.GetAccountByOwner(row.Owner)
+		authorizationEpoch := ""
+		if err == nil && account.Enabled {
+			authorizationEpoch = fmt.Sprintf("account:%d:project:%s", account.AuthVersion, row.ProjectID)
+		} else if row.Owner == store.OwnerDefault {
+			// Auth-off local mode has no enabled account model. The project-work
+			// callback above is still authoritative for this process.
+			authorizationEpoch = "auth-off-local:project:" + row.ProjectID
+		} else {
+			return completed, fmt.Errorf("project work source %s: current account authorization unavailable", row.EventID)
+		}
+		observation := extension.WorkObservation{
+			EventID: row.EventID, Phase: "source-committed", Actor: row.Owner, Owner: row.Owner,
+			ProjectID: core.ID(row.ProjectID), ConversationID: core.ID(row.ConversationID), RunID: core.ID(row.RunID),
+			SourceKind: row.SourceKind, SourceID: row.SourceID, SourceVersion: row.SourceVersion,
+			SourceSHA256: row.SourceSHA256, PartIndex: row.PartIndex, SpanStart: row.SpanStart, SpanEnd: row.SpanEnd,
+			Text: row.Text, Scope: row.Scope, Delivery: row.Delivery, DeliveryReason: row.Reason, Metadata: row.Metadata,
+			AuthorizationEpoch: authorizationEpoch, ObservedAt: row.ObservedAt,
+		}
+		result, err := provider.Observe(ctx, observation)
+		if err != nil {
+			return completed, err
+		}
+		switch result.State {
+		case extension.WorkObservationPending:
+			continue
+		case extension.WorkObservationAccepted, extension.WorkObservationPartial, extension.WorkObservationDenied:
+			if err := st.FinishProjectWorkObservation(row.EventID, result.ReceiptID, string(result.State)); err != nil {
+				return completed, err
+			}
+			completed++
+		default:
+			return completed, fmt.Errorf("project work source %s: invalid observer result %q", row.EventID, result.State)
+		}
+	}
+	return completed, nil
+}
+
+func verifyProjectKnowledgeObservation(_ context.Context, caps hostcaps, row store.ProjectWorkObservationRow) error {
+	if row.SourceKind != "retrieval-hit" || caps.st == nil {
+		return errors.New("project work source: unsupported resource verification")
+	}
+	doc, err := caps.st.ProjectWorkKnowledgeSource(row.SourceID)
+	if err != nil {
+		return errors.New("project work source: current knowledge source unavailable")
+	}
+	hash := sha256.Sum256([]byte(doc.Chunk))
+	actualHash := fmt.Sprintf("%x", hash)
+	if actualHash != row.SourceVersion || actualHash != row.SourceSHA256 || doc.Chunk != row.Text ||
+		(row.Metadata["ref"] != "" && row.Metadata["ref"] != doc.Ref) ||
+		(row.Metadata["source"] != "" && row.Metadata["source"] != doc.Source) ||
+		(doc.ProjectID != "" && string(doc.ProjectID) != row.ProjectID) {
+		return errors.New("project work source: knowledge version or scope changed")
+	}
+	if caps.authz != nil && caps.authz.hasV2() {
+		allowed, err := caps.authz.AuthorizeResource(extension.ResourceAuthzQuery{
+			Actor: row.Owner, Action: "model-context", ResourceType: "knowledge", ResourceID: doc.ID,
+			Owner: string(doc.Owner), ProjectID: doc.ProjectID, Source: doc.Source,
+		})
+		if err != nil || !allowed {
+			return errors.New("project work source: current knowledge authorization denied")
+		}
+	} else if string(doc.Owner) != row.Owner {
+		return errors.New("project work source: shared knowledge authorization unavailable")
+	}
+	return nil
+}
+
+// A transient tool result has no external source authority to recheck. Its
+// committed private outbox bytes and stored run are the only reliable source;
+// RDM must keep it a candidate until a separately verifiable evidence source
+// or human confirmation supports a formal project claim.
+func verifyProjectTransientObservation(_ context.Context, st *store.Store, row store.ProjectWorkObservationRow) error {
+	toolSource := row.SourceKind == "tool-result" && row.Metadata["sourceStatus"] == "transient" && row.Metadata["toolName"] != ""
+	visibleAnalysis := row.SourceKind == "visible-analysis" && row.Metadata["stage"] == "assistant-final" && row.Metadata["partType"] != ""
+	if (!toolSource && !visibleAnalysis) || row.RunID == "" {
+		return errors.New("project work source: transient result lacks trusted provenance")
+	}
+	run, err := st.GetRunByID(core.ID(row.RunID))
+	if err != nil || string(run.Owner) != row.Owner || string(run.ProjectID) != row.ProjectID || string(run.ConversationID) != row.ConversationID {
+		return errors.New("project work source: transient run binding unavailable")
+	}
+	return nil
+}
+
+// preflightProjectMessage delivers this committed message's pending parts
+// inline, then asks RDM to prove that every exact source part was analyzed for
+// the pending action. A durable intake ACK alone never permits the action.
+func preflightProjectMessage(ctx context.Context, st *store.Store, slot *projectWorkObserverSlot,
+	work func(context.Context, string, core.ID) (bool, error), messageID, action, expectedOwner, expectedConversation, expectedProject, targetID, targetVersion string,
+) (extension.ProjectWorkDecision, error) {
+	pending := extension.ProjectWorkDecision{State: extension.ProjectWorkPending, Reason: "project source awaiting analysis"}
+	provider := slot.get()
+	if provider == nil || work == nil {
+		return pending, errors.New("extension: trusted project work observer unavailable")
+	}
+	rows, err := st.ProjectMessageObservations(messageID)
+	if err != nil {
+		return pending, err
+	}
+	if len(rows) == 0 {
+		return pending, errors.New("extension: committed project message has no source manifest")
+	}
+	if _, err := deliverProjectWorkRows(ctx, st, provider, work, rows); err != nil {
+		return pending, err
+	}
+	rows, err = st.ProjectMessageObservations(messageID)
+	if err != nil {
+		return pending, err
+	}
+	manifest := make([]extension.ProjectWorkSource, 0, len(rows))
+	for _, row := range rows {
+		if row.State != "accepted" || row.Delivery != "complete" {
+			return pending, nil
+		}
+		manifest = append(manifest, extension.ProjectWorkSource{
+			EventID: row.EventID, SourceKind: row.SourceKind, SourceID: row.SourceID,
+			SourceVersion: row.SourceVersion, SourceSHA256: row.SourceSHA256, PartIndex: row.PartIndex,
+		})
+	}
+	first := rows[0]
+	if first.Owner != expectedOwner || first.ConversationID != expectedConversation || first.ProjectID != expectedProject {
+		return pending, errors.New("extension: source message is not bound to this actor, conversation, and project")
+	}
+	for _, row := range rows[1:] {
+		if row.Owner != first.Owner || row.ProjectID != first.ProjectID || row.ConversationID != first.ConversationID {
+			return pending, errors.New("extension: mixed project source manifest")
+		}
+	}
+	conv, err := st.GetConversation(first.Owner, first.ConversationID)
+	if err != nil || string(conv.ProjectID) != first.ProjectID {
+		return pending, errors.New("extension: project binding changed before preflight")
+	}
+	allowed, err := work(ctx, first.Owner, conv.ProjectID)
+	if err != nil || !allowed {
+		return pending, errors.New("extension: current project work denied before preflight")
+	}
+	raw, err := json.Marshal(manifest)
+	if err != nil {
+		return pending, err
+	}
+	watermark := fmt.Sprintf("%x", sha256.Sum256(raw))
+	decision, err := provider.Preflight(ctx, extension.ProjectWorkAction{
+		Actor: first.Owner, Owner: first.Owner, ProjectID: conv.ProjectID,
+		ConversationID: conv.ID, RunID: core.ID(first.RunID), Action: action, TargetID: targetID, TargetVersion: targetVersion,
+		Manifest: manifest, SourceWatermark: watermark,
+	})
+	if err != nil {
+		return pending, err
+	}
+	switch decision.State {
+	case extension.ProjectWorkProceed:
+		if decision.DecisionID == "" || decision.SourceWatermark != watermark {
+			return pending, errors.New("extension: project preflight decision did not bind current sources")
+		}
+	case extension.ProjectWorkClarify, extension.ProjectWorkPending, extension.ProjectWorkDenied:
+		// A non-proceed decision is a real result, never an implied approval.
+	default:
+		return pending, errors.New("extension: invalid project preflight decision")
+	}
+	return decision, nil
+}
+
+// preflightProjectRun binds all committed user, retrieval, tool, and visible
+// analysis parts of one run before a later model or business action consumes
+// them. Missing/partial parts keep the action pending. The domain provider
+// decides whether the complete source set contains a blocking risk.
+func preflightProjectRun(ctx context.Context, st *store.Store, slot *projectWorkObserverSlot,
+	work func(context.Context, string, core.ID) (bool, error), verify func(context.Context, store.ProjectWorkObservationRow) error,
+	runID, action string,
+) (extension.ProjectWorkDecision, error) {
+	pending := extension.ProjectWorkDecision{State: extension.ProjectWorkPending, Reason: "run sources awaiting analysis"}
+	provider := slot.get()
+	if provider == nil || work == nil || verify == nil {
+		return pending, errors.New("extension: trusted project run observer unavailable")
+	}
+	run, err := st.GetRunByID(core.ID(runID))
+	if err != nil || run.ProjectID == "" {
+		return pending, errors.New("extension: trusted project run unavailable")
+	}
+	rows, err := st.ProjectRunObservations(runID)
+	if err != nil {
+		return pending, err
+	}
+	if len(rows) == 0 {
+		return pending, errors.New("extension: project run has no trusted source manifest")
+	}
+	if _, err := deliverProjectWorkRows(ctx, st, provider, work, rows, verify); err != nil {
+		return pending, err
+	}
+	rows, err = st.ProjectRunObservations(runID)
+	if err != nil {
+		return pending, err
+	}
+	manifest := make([]extension.ProjectWorkSource, 0, len(rows))
+	for _, row := range rows {
+		if row.State != "accepted" || row.Delivery != "complete" {
+			return pending, nil
+		}
+		if row.RunID != runID || row.Owner != string(run.Owner) || row.ProjectID != string(run.ProjectID) || row.ConversationID != string(run.ConversationID) {
+			return pending, errors.New("extension: mixed run source manifest")
+		}
+		if row.SourceKind != "user-message" && row.SourceKind != "assistant-message" {
+			if err := verify(ctx, row); err != nil {
+				return pending, err
+			}
+		}
+		manifest = append(manifest, extension.ProjectWorkSource{
+			EventID: row.EventID, SourceKind: row.SourceKind, SourceID: row.SourceID,
+			SourceVersion: row.SourceVersion, SourceSHA256: row.SourceSHA256, PartIndex: row.PartIndex,
+		})
+	}
+	conv, err := st.GetConversation(string(run.Owner), string(run.ConversationID))
+	if err != nil || conv.ProjectID != run.ProjectID {
+		return pending, errors.New("extension: run project binding changed before preflight")
+	}
+	allowed, err := work(ctx, string(run.Owner), run.ProjectID)
+	if err != nil || !allowed {
+		return pending, errors.New("extension: current run project work denied")
+	}
+	raw, err := json.Marshal(manifest)
+	if err != nil {
+		return pending, err
+	}
+	watermark := fmt.Sprintf("%x", sha256.Sum256(raw))
+	decision, err := provider.Preflight(ctx, extension.ProjectWorkAction{
+		Actor: string(run.Owner), Owner: string(run.Owner), ProjectID: run.ProjectID,
+		ConversationID: run.ConversationID, RunID: run.ID, Action: action,
+		Manifest: manifest, SourceWatermark: watermark,
+	})
+	if err != nil {
+		return pending, err
+	}
+	switch decision.State {
+	case extension.ProjectWorkProceed:
+		if decision.DecisionID == "" || decision.SourceWatermark != watermark {
+			return pending, errors.New("extension: run preflight decision did not bind current sources")
+		}
+	case extension.ProjectWorkClarify, extension.ProjectWorkPending, extension.ProjectWorkDenied:
+	default:
+		return pending, errors.New("extension: invalid project run preflight decision")
+	}
+	return decision, nil
+}

internal/app/project_work_observation_test.go

@@ -0,0 +1,332 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"fmt"
+	"path/filepath"
+	"testing"
+
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+func workObserverForTest() extension.ProjectWorkObserver {
+	return extension.ProjectWorkObserver{
+		Observe: func(context.Context, extension.WorkObservation) (extension.WorkObservationResult, error) {
+			return extension.WorkObservationResult{State: extension.WorkObservationPending}, nil
+		},
+		Preflight: func(context.Context, extension.ProjectWorkAction) (extension.ProjectWorkDecision, error) {
+			return extension.ProjectWorkDecision{State: extension.ProjectWorkPending}, nil
+		},
+		Respond: func(context.Context, extension.ProjectRiskAnswer) (extension.ProjectWorkDecision, error) {
+			return extension.ProjectWorkDecision{State: extension.ProjectWorkPending}, nil
+		},
+	}
+}
+
+func TestProjectWorkDeliveryRechecksCurrentAuthorityAndACKsOnce(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "work.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "P")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", string(project.ID), "Work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	msg := core.Message{ConversationID: conv.ID, Role: core.RoleUser, Parts: []core.Part{{Type: core.PartText, Text: "要求效率和成本都低于人工"}}}
+	if err := st.AppendMessageWithRequestAccountChecked("alice", false, &msg, "req-1"); err != nil {
+		t.Fatal(err)
+	}
+	called := 0
+	slot := &projectWorkObserverSlot{}
+	observer := workObserverForTest()
+	observer.Observe = func(_ context.Context, source extension.WorkObservation) (extension.WorkObservationResult, error) {
+		called++
+		if source.Owner != "alice" || source.Actor != "alice" || source.ProjectID != project.ID || source.SourceID != string(msg.ID) || source.Text != msg.Parts[0].Text || source.Scope != "private" {
+			t.Fatalf("provider received forged or wrong source: %+v", source)
+		}
+		return extension.WorkObservationResult{State: extension.WorkObservationAccepted, ReceiptID: "rdm-receipt-1"}, nil
+	}
+	if err := (pluginRegistry{pluginID: "rdm", caps: hostcaps{workObserver: slot}}).RegisterProjectWorkObserver(observer); err != nil {
+		t.Fatal(err)
+	}
+	denied := func(context.Context, string, core.ID) (bool, error) { return false, nil }
+	if _, err := deliverProjectWorkObservations(context.Background(), st, slot, denied, 10); err == nil || called != 0 {
+		t.Fatalf("revoked source was disclosed: calls=%d err=%v", called, err)
+	}
+	allowed := func(_ context.Context, actor string, id core.ID) (bool, error) {
+		return actor == "alice" && id == project.ID, nil
+	}
+	if delivered, err := deliverProjectWorkObservations(context.Background(), st, slot, allowed, 10); err != nil || delivered != 1 || called != 1 {
+		t.Fatalf("authorized source delivery failed: delivered=%d calls=%d err=%v", delivered, called, err)
+	}
+	if delivered, err := deliverProjectWorkObservations(context.Background(), st, slot, allowed, 10); err != nil || delivered != 0 || called != 1 {
+		t.Fatalf("delivered source was replayed without need: delivered=%d calls=%d err=%v", delivered, called, err)
+	}
+}
+
+func TestProjectMessagePreflightRequiresAnalysisAndExactManifest(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "preflight.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "P")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", string(project.ID), "Work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	msg := core.Message{ConversationID: conv.ID, Role: core.RoleUser, Parts: []core.Part{{Type: core.PartText, Text: "要求效率和成本都低于人工"}}}
+	if err := st.AppendMessageWithRequestAccountChecked("alice", false, &msg, "req-1"); err != nil {
+		t.Fatal(err)
+	}
+	ready, observations, decisions := false, 0, 0
+	observer := workObserverForTest()
+	observer.Observe = func(context.Context, extension.WorkObservation) (extension.WorkObservationResult, error) {
+		observations++
+		return extension.WorkObservationResult{State: extension.WorkObservationAccepted, ReceiptID: "intake-1"}, nil
+	}
+	observer.Preflight = func(_ context.Context, action extension.ProjectWorkAction) (extension.ProjectWorkDecision, error) {
+		decisions++
+		if action.Actor != "alice" || action.ProjectID != project.ID || action.ConversationID != conv.ID || action.RunID != "" || action.Action != "conversation.run" || len(action.Manifest) != 1 {
+			t.Fatalf("preflight did not receive exact trusted source manifest: %+v", action)
+		}
+		if !ready {
+			return extension.ProjectWorkDecision{State: extension.ProjectWorkPending}, nil
+		}
+		return extension.ProjectWorkDecision{State: extension.ProjectWorkProceed, DecisionID: "decision-1", SourceWatermark: action.SourceWatermark}, nil
+	}
+	slot := &projectWorkObserverSlot{provider: &observer}
+	work := func(_ context.Context, actor string, id core.ID) (bool, error) {
+		return actor == "alice" && id == project.ID, nil
+	}
+	decision, err := preflightProjectMessage(context.Background(), st, slot, work, string(msg.ID), "conversation.run", "alice", string(conv.ID), string(project.ID), "conversation.run", "v1")
+	if err != nil || decision.State != extension.ProjectWorkPending || observations != 1 || decisions != 1 {
+		t.Fatalf("durable intake was confused with completed analysis: %+v observations=%d decisions=%d err=%v", decision, observations, decisions, err)
+	}
+	ready = true
+	decision, err = preflightProjectMessage(context.Background(), st, slot, work, string(msg.ID), "conversation.run", "alice", string(conv.ID), string(project.ID), "conversation.run", "v1")
+	if err != nil || decision.State != extension.ProjectWorkProceed || observations != 1 || decisions != 2 {
+		t.Fatalf("same source did not proceed after domain analysis: %+v observations=%d decisions=%d err=%v", decision, observations, decisions, err)
+	}
+	if _, err := st.DB().Exec(`UPDATE messages SET parts=? WHERE id=?`, `[{"type":"text","text":"changed"}]`, msg.ID); err != nil {
+		t.Fatal(err)
+	}
+	decision, err = preflightProjectMessage(context.Background(), st, slot, work, string(msg.ID), "conversation.run", "alice", string(conv.ID), string(project.ID), "conversation.run", "v1")
+	if err != nil || decision.State != extension.ProjectWorkPending || decisions != 2 {
+		t.Fatalf("source changed after ACK but stale decision still passed: %+v decisions=%d err=%v", decision, decisions, err)
+	}
+	partial := core.Message{ConversationID: conv.ID, Role: core.RoleUser, Parts: []core.Part{{Type: core.PartArtifactRef, Artifact: &core.ArtifactRef{ArtifactID: "file-1"}}}}
+	if err := st.AppendMessageWithRequestAccountChecked("alice", false, &partial, "req-2"); err != nil {
+		t.Fatal(err)
+	}
+	decision, err = preflightProjectMessage(context.Background(), st, slot, work, string(partial.ID), "conversation.run", "alice", string(conv.ID), string(project.ID), "conversation.run", "v1")
+	if err != nil || decision.State != extension.ProjectWorkPending || decisions != 2 {
+		t.Fatalf("partial attachment reached project action preflight: %+v decisions=%d err=%v", decision, decisions, err)
+	}
+}
+
+func TestRetrievalObservationRechecksCurrentSourceBeforeDisclosure(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "source.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "P")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", string(project.ID), "Work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	run := core.Run{ConversationID: conv.ID, ProjectID: project.ID, Owner: "alice", Kind: core.RunConversation, Status: core.RunRunning, Phase: core.PhaseThinking}
+	if err := st.CreateRun(&run); err != nil {
+		t.Fatal(err)
+	}
+	doc := core.KnowledgeDoc{ID: "knowledge-1", Owner: "alice", ProjectID: project.ID, Source: "upload", Ref: "https://example.test/a", Chunk: "actual source"}
+	if err := st.AddKnowledge(doc); err != nil {
+		t.Fatal(err)
+	}
+	observation := store.RunWorkObservationInput{RunID: string(run.ID), SourceKind: "retrieval-hit", SourceID: string(doc.ID),
+		SourceVersion: fmt.Sprintf("%x", sha256.Sum256([]byte(doc.Chunk))), Text: doc.Chunk, Delivery: "complete",
+		Metadata: map[string]string{"ref": doc.Ref, "source": doc.Source}}
+	if _, err := st.AppendRunWorkObservation(observation); err != nil {
+		t.Fatal(err)
+	}
+	called := 0
+	provider := workObserverForTest()
+	provider.Observe = func(context.Context, extension.WorkObservation) (extension.WorkObservationResult, error) {
+		called++
+		return extension.WorkObservationResult{State: extension.WorkObservationAccepted, ReceiptID: "rdm-1"}, nil
+	}
+	slot := &projectWorkObserverSlot{provider: &provider}
+	work := func(context.Context, string, core.ID) (bool, error) { return true, nil }
+	verify := func(ctx context.Context, row store.ProjectWorkObservationRow) error {
+		return verifyProjectKnowledgeObservation(ctx, hostcaps{st: st}, row)
+	}
+	if n, err := deliverProjectWorkObservations(context.Background(), st, slot, work, 10, verify); err != nil || n != 1 || called != 1 {
+		t.Fatalf("current owned source was not delivered: n=%d calls=%d err=%v", n, called, err)
+	}
+	if _, err := st.AppendRunWorkObservation(observation); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.DB().Exec(`DELETE FROM knowledge WHERE id=?`, doc.ID); err != nil {
+		t.Fatal(err)
+	}
+	if n, err := deliverProjectWorkObservations(context.Background(), st, slot, work, 10, verify); err == nil || n != 0 || called != 1 {
+		t.Fatalf("deleted source text crossed into observer: n=%d calls=%d err=%v", n, called, err)
+	}
+}
+
+func TestTransientToolSourceKeepsCurrentRunAndCandidateStatus(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "tool.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "P")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", string(project.ID), "Work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	run := core.Run{ConversationID: conv.ID, ProjectID: project.ID, Owner: "alice", Kind: core.RunConversation, Status: core.RunRunning, Phase: core.PhaseThinking}
+	if err := st.CreateRun(&run); err != nil {
+		t.Fatal(err)
+	}
+	_, err = st.AppendRunWorkObservation(store.RunWorkObservationInput{RunID: string(run.ID), SourceKind: "tool-result", SourceID: "call-1", SourceVersion: "v1",
+		Text: "实际工具返回", Delivery: "complete", Metadata: map[string]string{"sourceStatus": "transient", "toolName": "lookup"}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	rows, err := st.PendingProjectWorkObservations(10)
+	if err != nil || len(rows) != 1 {
+		t.Fatalf("tool source missing: %+v %v", rows, err)
+	}
+	if err := verifyProjectTransientObservation(context.Background(), st, rows[0]); err != nil {
+		t.Fatalf("committed private tool source rejected: %v", err)
+	}
+	if _, err := st.DB().Exec(`DELETE FROM runs WHERE id=?`, run.ID); err != nil {
+		t.Fatal(err)
+	}
+	if err := verifyProjectTransientObservation(context.Background(), st, rows[0]); err == nil {
+		t.Fatal("deleted run still authorized its transient source")
+	}
+}
+
+func TestRunPreflightWaitsForAllCommittedSourceParts(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "run-preflight.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice"); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "P")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", string(project.ID), "Work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	run := core.Run{ConversationID: conv.ID, ProjectID: project.ID, Owner: "alice", Kind: core.RunConversation, Status: core.RunRunning, Phase: core.PhaseThinking}
+	if err := st.CreateRun(&run); err != nil {
+		t.Fatal(err)
+	}
+	msg := core.Message{ConversationID: conv.ID, Role: core.RoleUser, Parts: []core.Part{{Type: core.PartText, Text: "检查成本和效率"}}}
+	if err := st.AppendMessageWithRequestAccountChecked("alice", false, &msg, "req"); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.SetMessageRunIDAccountChecked("alice", string(msg.ID), string(run.ID), false); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.AppendRunWorkObservation(store.RunWorkObservationInput{RunID: string(run.ID), SourceKind: "tool-result", SourceID: "call-1",
+		SourceVersion: "v1", Text: "工具中的测量结果", Delivery: "complete", Metadata: map[string]string{"sourceStatus": "transient", "toolName": "measure"}}); err != nil {
+		t.Fatal(err)
+	}
+	ready, preflights, observed, verified := false, 0, 0, 0
+	provider := workObserverForTest()
+	provider.Observe = func(_ context.Context, observation extension.WorkObservation) (extension.WorkObservationResult, error) {
+		observed++
+		if observation.AuthorizationEpoch == "" {
+			t.Fatal("observation omitted the current authorization epoch")
+		}
+		return extension.WorkObservationResult{State: extension.WorkObservationAccepted, ReceiptID: fmt.Sprintf("receipt-%d", observed)}, nil
+	}
+	provider.Preflight = func(_ context.Context, action extension.ProjectWorkAction) (extension.ProjectWorkDecision, error) {
+		preflights++
+		if action.RunID != run.ID || action.ProjectID != project.ID || len(action.Manifest) != 2 {
+			t.Fatalf("run manifest omitted a committed source: %+v", action)
+		}
+		if !ready {
+			return extension.ProjectWorkDecision{State: extension.ProjectWorkPending}, nil
+		}
+		return extension.ProjectWorkDecision{State: extension.ProjectWorkProceed, DecisionID: "approved-risk-check", SourceWatermark: action.SourceWatermark}, nil
+	}
+	slot := &projectWorkObserverSlot{provider: &provider}
+	work := func(context.Context, string, core.ID) (bool, error) { return true, nil }
+	verify := func(ctx context.Context, row store.ProjectWorkObservationRow) error {
+		verified++
+		return verifyProjectTransientObservation(ctx, st, row)
+	}
+	decision, err := preflightProjectRun(context.Background(), st, slot, work, verify, string(run.ID), "model.consume.tool")
+	if err != nil || decision.State != extension.ProjectWorkPending || observed != 2 || preflights != 1 || verified != 2 {
+		t.Fatalf("intake ACK was mistaken for finished risk analysis: %+v observed=%d preflights=%d err=%v", decision, observed, preflights, err)
+	}
+	ready = true
+	decision, err = preflightProjectRun(context.Background(), st, slot, work, verify, string(run.ID), "model.consume.tool")
+	if err != nil || decision.State != extension.ProjectWorkProceed || observed != 2 || preflights != 2 || verified != 3 {
+		t.Fatalf("fully analyzed run was not released once: %+v observed=%d verified=%d preflights=%d err=%v", decision, observed, verified, preflights, err)
+	}
+}
+
+func TestProjectWorkObservationRegistrationIsTrustedAndUnique(t *testing.T) {
+	slot := &projectWorkObserverSlot{}
+	trusted := pluginRegistry{pluginID: "rdm", caps: hostcaps{workObserver: slot}}
+	other := pluginRegistry{pluginID: "other", caps: hostcaps{workObserver: slot}}
+	if err := other.RegisterProjectWorkObserver(workObserverForTest()); err == nil {
+		t.Fatal("untrusted plugin registered project observer")
+	}
+	if err := (compiledRegistry{}).RegisterProjectWorkObserver(workObserverForTest()); err == nil {
+		t.Fatal("declarative plugin registered live observer callback")
+	}
+	if err := trusted.RegisterProjectWorkObserver(extension.ProjectWorkObserver{}); err == nil {
+		t.Fatal("partial observer registered")
+	}
+	if err := trusted.RegisterProjectWorkObserver(workObserverForTest()); err != nil {
+		t.Fatal(err)
+	}
+	if err := trusted.RegisterProjectWorkObserver(workObserverForTest()); err == nil {
+		t.Fatal("second observer replaced the trusted provider")
+	}
+	if got := slot.get(); got == nil || got.Observe == nil || got.Preflight == nil || got.Respond == nil {
+		t.Fatal("registered observer not available to host")
+	}
+}

internal/app/regulations.go

@@ -0,0 +1,220 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"strings"
+	"sync"
+	"unicode/utf8"
+
+	"agent-system-backend/pkg/extension"
+)
+
+// EXT-20：共享法规检索与网络证据。提供方由受信插件 kbreg 进程内注册；基座只
+// 填写调用方身份、做查询最小化校验并审计，不改写提供方返回的状态。
+
+const (
+	regulationsPluginID = "kbreg"
+	maxWebQueryRunes    = 256
+
+	auditRegulationsSearch   = "regulations.search"
+	auditRegulationsEvidence = "regulations.evidence"
+	auditWebSearch           = "web.search"
+	auditWebCapture          = "web.capture"
+
+	regulationsAuditInvalid = "invalid"
+	regulationsAuditError   = "error"
+	regulationsAuditOK      = "ok"
+)
+
+var (
+	errRegulationsSchema = errors.New("extension: unsupported regulations schema version")
+	errWebQueryInvalid   = errors.New("extension: web search query must be 1-256 characters")
+)
+
+type regulationsSlot struct {
+	mu       sync.RWMutex
+	provider extension.RegulationsProvider
+}
+
+func (s *regulationsSlot) register(pluginID string, p extension.RegulationsProvider) error {
+	if p == nil || pluginID != regulationsPluginID {
+		return errors.New("extension: regulations provider requires trusted kbreg registration")
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.provider != nil {
+		return errors.New("extension: regulations provider already registered")
+	}
+	s.provider = p
+	return nil
+}
+
+func (s *regulationsSlot) get() extension.RegulationsProvider {
+	if s == nil {
+		return nil
+	}
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.provider
+}
+
+// regulationsAudit is the only content written to the audit trail: never the
+// query text, excerpts or captured page text.
+type regulationsAudit struct {
+	Revision    string `json:"revision,omitempty"`
+	Count       int    `json:"count"`
+	State       string `json:"state"`
+	QuerySHA256 string `json:"querySha256,omitempty"`
+}
+
+func regulationsQueryDigest(query string) string {
+	if query == "" {
+		return ""
+	}
+	sum := sha256.Sum256([]byte(query))
+	return hex.EncodeToString(sum[:])
+}
+
+// regulations resolves the provider and the trusted caller. Without an audit
+// store the capability is unavailable: calls must never run unaudited.
+func (h inprocHost) regulations() (extension.RegulationsProvider, extension.RegulationsCaller, error) {
+	if err := h.requireEffective(); err != nil {
+		return nil, extension.RegulationsCaller{}, err
+	}
+	p := h.caps.regulations.get()
+	if p == nil || h.caps.st == nil {
+		return nil, extension.RegulationsCaller{}, extension.ErrRegulationsUnavailable
+	}
+	return p, extension.RegulationsCaller{PluginID: h.pluginID, Actor: h.actor, Owner: h.owner}, nil
+}
+
+// auditRegulations appends one event per call. A call error takes precedence;
+// otherwise an audit failure withholds the result.
+func (h inprocHost) auditRegulations(action string, rec regulationsAudit, callErr error) error {
+	if callErr != nil && rec.State == "" {
+		rec.State = regulationsAuditError
+	}
+	evidence, err := json.Marshal(rec)
+	if err == nil {
+		err = h.Audit(action, regulationsPluginID, string(evidence))
+	}
+	if callErr != nil {
+		return callErr
+	}
+	return err
+}
+
+func (h inprocHost) SearchRegulations(ctx context.Context, req extension.RegulationsSearchRequest) (extension.RegulationsSearchResult, error) {
+	p, caller, err := h.regulations()
+	if err != nil {
+		return extension.RegulationsSearchResult{}, err
+	}
+	rec := regulationsAudit{Revision: req.CorpusRevision, QuerySHA256: regulationsQueryDigest(req.Query)}
+	if req.SchemaVersion != extension.RegulationsSchemaVersion {
+		rec.State = regulationsAuditInvalid
+		return extension.RegulationsSearchResult{}, h.auditRegulations(auditRegulationsSearch, rec, errRegulationsSchema)
+	}
+	res, err := p.SearchRegulations(ctx, caller, req)
+	if err == nil {
+		rec.Revision, rec.Count, rec.State = res.CorpusRevision, len(res.Hits), res.State
+	}
+	if err := h.auditRegulations(auditRegulationsSearch, rec, err); err != nil {
+		return extension.RegulationsSearchResult{}, err
+	}
+	return res, nil
+}
+
+func (h inprocHost) ResolveRegulationEvidence(ctx context.Context, req extension.RegulationEvidenceRequest) (extension.RegulationEvidence, error) {
+	p, caller, err := h.regulations()
+	if err != nil {
+		return extension.RegulationEvidence{}, err
+	}
+	rec := regulationsAudit{Revision: req.CorpusRevision}
+	if req.SchemaVersion != extension.RegulationsSchemaVersion {
+		rec.State = regulationsAuditInvalid
+		return extension.RegulationEvidence{}, h.auditRegulations(auditRegulationsEvidence, rec, errRegulationsSchema)
+	}
+	ev, err := p.ResolveRegulationEvidence(ctx, caller, req)
+	if err == nil {
+		rec.Count, rec.State = 1, regulationsAuditOK
+		if ev.CorpusRevision != "" {
+			rec.Revision = ev.CorpusRevision
+		}
+	}
+	if err := h.auditRegulations(auditRegulationsEvidence, rec, err); err != nil {
+		return extension.RegulationEvidence{}, err
+	}
+	return ev, nil
+}
+
+// webQueryExcluded reports whether query contains any non-empty exclusion
+// term, case-insensitively.
+func webQueryExcluded(query string, exclusions []string) bool {
+	lower := strings.ToLower(query)
+	for _, term := range exclusions {
+		term = strings.ToLower(strings.TrimSpace(term))
+		if term != "" && strings.Contains(lower, term) {
+			return true
+		}
+	}
+	return false
+}
+
+func (h inprocHost) SearchWeb(ctx context.Context, req extension.WebSearchRequest) (extension.WebSearchResult, error) {
+	p, caller, err := h.regulations()
+	if err != nil {
+		return extension.WebSearchResult{}, err
+	}
+	req.Query = strings.TrimSpace(req.Query)
+	rec := regulationsAudit{QuerySHA256: regulationsQueryDigest(req.Query)}
+	if req.SchemaVersion != extension.RegulationsSchemaVersion {
+		rec.State = regulationsAuditInvalid
+		return extension.WebSearchResult{}, h.auditRegulations(auditWebSearch, rec, errRegulationsSchema)
+	}
+	if req.Query == "" || !utf8.ValidString(req.Query) || utf8.RuneCountInString(req.Query) > maxWebQueryRunes {
+		rec.State = regulationsAuditInvalid
+		return extension.WebSearchResult{}, h.auditRegulations(auditWebSearch, rec, errWebQueryInvalid)
+	}
+	if webQueryExcluded(req.Query, req.Exclusions) {
+		res := extension.WebSearchResult{State: extension.WebSearchStateRejected, Reason: "query contains an excluded term"}
+		rec.State = res.State
+		if err := h.auditRegulations(auditWebSearch, rec, nil); err != nil {
+			return extension.WebSearchResult{}, err
+		}
+		return res, nil
+	}
+	res, err := p.SearchWeb(ctx, caller, req)
+	if err == nil {
+		rec.Count, rec.State = len(res.Results), res.State
+	}
+	if err := h.auditRegulations(auditWebSearch, rec, err); err != nil {
+		return extension.WebSearchResult{}, err
+	}
+	return res, nil
+}
+
+func (h inprocHost) CaptureWeb(ctx context.Context, req extension.WebCaptureRequest) (extension.WebCapture, error) {
+	p, caller, err := h.regulations()
+	if err != nil {
+		return extension.WebCapture{}, err
+	}
+	rec := regulationsAudit{QuerySHA256: regulationsQueryDigest(strings.TrimSpace(req.SearchQuery))}
+	if req.SchemaVersion != extension.RegulationsSchemaVersion {
+		rec.State = regulationsAuditInvalid
+		return extension.WebCapture{}, h.auditRegulations(auditWebCapture, rec, errRegulationsSchema)
+	}
+	capture, err := p.CaptureWeb(ctx, caller, req)
+	if err == nil {
+		rec.Count, rec.State = len(capture.Candidates), capture.State
+	}
+	if err := h.auditRegulations(auditWebCapture, rec, err); err != nil {
+		return extension.WebCapture{}, err
+	}
+	return capture, nil
+}
+
+var _ extension.RegulationsHost = inprocHost{}

internal/app/regulations_compat_test.go

@@ -0,0 +1,134 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"path/filepath"
+	"testing"
+	"time"
+
+	agentcommand "agent-command"
+	"agent-system-backend/internal/cmdbus"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+)
+
+// compatRegulationsPlugin stands in for the external kbreg repository: it uses
+// only pkg/extension types and registers through the optional Registrar.
+type compatRegulationsPlugin struct{ seen []extension.RegulationsCaller }
+
+func (p *compatRegulationsPlugin) Register(reg extension.Registry) error {
+	registrar, ok := reg.(extension.RegulationsRegistrar)
+	if !ok {
+		return errors.New("regulations registrar unavailable")
+	}
+	return registrar.RegisterRegulationsProvider(p)
+}
+
+func (p *compatRegulationsPlugin) SearchRegulations(_ context.Context, c extension.RegulationsCaller, req extension.RegulationsSearchRequest) (extension.RegulationsSearchResult, error) {
+	p.seen = append(p.seen, c)
+	return extension.RegulationsSearchResult{CorpusRevision: "rev-compat", State: extension.RegulationsStateOK,
+		Hits: []extension.RegulationHit{{RegulationID: "r", EditionID: "e", NodeID: "n", Disclosure: extension.RegulationDisclosureExcerpt}}}, nil
+}
+
+func (p *compatRegulationsPlugin) ResolveRegulationEvidence(_ context.Context, c extension.RegulationsCaller, req extension.RegulationEvidenceRequest) (extension.RegulationEvidence, error) {
+	p.seen = append(p.seen, c)
+	return extension.RegulationEvidence{CorpusRevision: req.CorpusRevision, NodeID: req.NodeID, Disclosure: extension.RegulationDisclosureFull, HashVerified: true}, nil
+}
+
+func (p *compatRegulationsPlugin) SearchWeb(_ context.Context, c extension.RegulationsCaller, req extension.WebSearchRequest) (extension.WebSearchResult, error) {
+	p.seen = append(p.seen, c)
+	return extension.WebSearchResult{Provider: "compat", SentQuery: req.Query, State: extension.WebSearchStateEmpty}, nil
+}
+
+func (p *compatRegulationsPlugin) CaptureWeb(_ context.Context, c extension.RegulationsCaller, req extension.WebCaptureRequest) (extension.WebCapture, error) {
+	p.seen = append(p.seen, c)
+	return extension.WebCapture{FinalURL: req.URL, State: extension.WebCaptureStateFailed, Reason: "offline"}, nil
+}
+
+// compatRegulationsConsumer is a second compiled plugin that reaches the
+// provider only through the dispatch Host type assertion.
+func compatRegulationsConsumer(reg extension.Registry) error {
+	return reg.AddCommandHandler(json.RawMessage(`{"id":"consumer.regs","title":"regs"}`),
+		func(ctx context.Context, h extension.Host, req extension.Request) (any, error) {
+			regs, ok := h.(extension.RegulationsHost)
+			if !ok {
+				return nil, errors.New("regulations host capability missing")
+			}
+			search, err := regs.SearchRegulations(ctx, extension.RegulationsSearchRequest{SchemaVersion: extension.RegulationsSchemaVersion, Query: "注册检验"})
+			if err != nil {
+				return nil, err
+			}
+			web, err := regs.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: extension.RegulationsSchemaVersion, Query: "注册检验 指导原则"})
+			if err != nil {
+				return nil, err
+			}
+			return map[string]any{"revision": search.CorpusRevision, "webState": web.State}, nil
+		})
+}
+
+func newRegulationsCompatApp(t *testing.T, plugins ...extension.InProc) (*cmdbus.Bus, *store.Store, hostcaps) {
+	t.Helper()
+	extension.ResetCompiled()
+	t.Cleanup(extension.ResetCompiled)
+	for _, p := range plugins {
+		extension.RegisterCompiled(p)
+	}
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "compat.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { st.Close() })
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
+	bus := cmdbus.New(st, nil, func() time.Time { return time.Unix(1700000000, 0).UTC() })
+	caps := hostcaps{st: st, regulations: &regulationsSlot{}}
+	applyCompiled("", bus, caps)
+	return bus, st, caps
+}
+
+func TestRegulationsCompiledPluginCompatibility(t *testing.T) {
+	provider := &compatRegulationsPlugin{}
+	impostor := &compatRegulationsPlugin{}
+	bus, st, caps := newRegulationsCompatApp(t,
+		extension.InProc{ID: "impostor", Register: impostor.Register},
+		extension.InProc{ID: "kbreg", Register: provider.Register},
+		extension.InProc{ID: "consumer", Register: compatRegulationsConsumer},
+	)
+	if caps.regulations.get() != extension.RegulationsProvider(provider) {
+		t.Fatal("compiled kbreg provider was not the registered provider")
+	}
+	resp := bus.Dispatch(context.Background(), cmdbus.Request{ID: "consumer.regs", Owner: "alice", Actor: "alice", Entrance: "button"})
+	if resp.Receipt.State != agentcommand.StateCommitted {
+		t.Fatalf("dispatch = %+v", resp.Receipt)
+	}
+	payload, _ := resp.Payload.(map[string]any)
+	if payload["revision"] != "rev-compat" || payload["webState"] != extension.WebSearchStateEmpty {
+		t.Fatalf("payload = %+v", resp.Payload)
+	}
+	want := extension.RegulationsCaller{PluginID: "consumer", Actor: "alice", Owner: "alice"}
+	if len(provider.seen) != 2 || provider.seen[0] != want || provider.seen[1] != want || len(impostor.seen) != 0 {
+		t.Fatalf("provider callers = %+v impostor = %+v", provider.seen, impostor.seen)
+	}
+	evs, err := st.ListAuditEvents("alice", 20)
+	if err != nil {
+		t.Fatal(err)
+	}
+	actions := map[string]bool{}
+	for _, ev := range evs {
+		actions[ev.Action] = true
+	}
+	if !actions[auditRegulationsSearch] || !actions[auditWebSearch] {
+		t.Fatalf("host audit missing: %+v", evs)
+	}
+}
+
+func TestRegulationsCompiledConsumerWithoutProvider(t *testing.T) {
+	bus, _, _ := newRegulationsCompatApp(t, extension.InProc{ID: "consumer", Register: compatRegulationsConsumer})
+	resp := bus.Dispatch(context.Background(), cmdbus.Request{ID: "consumer.regs", Owner: "alice", Actor: "alice", Entrance: "button"})
+	if resp.Receipt.State == agentcommand.StateCommitted {
+		t.Fatalf("consumer succeeded without a regulations provider: %+v", resp.Payload)
+	}
+}

internal/app/regulations_test.go

@@ -0,0 +1,347 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	"agent-system-backend/internal/store"
+	"agent-system-backend/pkg/extension"
+)
+
+type fakeRegulationsProvider struct {
+	callers    []extension.RegulationsCaller
+	webQueries []string
+	search     extension.RegulationsSearchResult
+	evidence   extension.RegulationEvidence
+	web        extension.WebSearchResult
+	capture    extension.WebCapture
+	err        error
+}
+
+func (f *fakeRegulationsProvider) SearchRegulations(_ context.Context, c extension.RegulationsCaller, _ extension.RegulationsSearchRequest) (extension.RegulationsSearchResult, error) {
+	f.callers = append(f.callers, c)
+	return f.search, f.err
+}
+
+func (f *fakeRegulationsProvider) ResolveRegulationEvidence(_ context.Context, c extension.RegulationsCaller, _ extension.RegulationEvidenceRequest) (extension.RegulationEvidence, error) {
+	f.callers = append(f.callers, c)
+	return f.evidence, f.err
+}
+
+func (f *fakeRegulationsProvider) SearchWeb(_ context.Context, c extension.RegulationsCaller, req extension.WebSearchRequest) (extension.WebSearchResult, error) {
+	f.callers = append(f.callers, c)
+	f.webQueries = append(f.webQueries, req.Query)
+	return f.web, f.err
+}
+
+func (f *fakeRegulationsProvider) CaptureWeb(_ context.Context, c extension.RegulationsCaller, _ extension.WebCaptureRequest) (extension.WebCapture, error) {
+	f.callers = append(f.callers, c)
+	return f.capture, f.err
+}
+
+func newRegulationsTestHost(t *testing.T) (inprocHost, *store.Store) {
+	t.Helper()
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "regulations.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { st.Close() })
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
+	caps := hostcaps{st: st, regulations: &regulationsSlot{}}
+	return inprocHost{caps: caps, pluginID: "rdm", owner: "alice", actor: "alice"}, st
+}
+
+func registerFakeRegulations(t *testing.T, h inprocHost) *fakeRegulationsProvider {
+	t.Helper()
+	p := &fakeRegulationsProvider{}
+	if err := (pluginRegistry{pluginID: "kbreg", caps: h.caps}).RegisterRegulationsProvider(p); err != nil {
+		t.Fatal(err)
+	}
+	return p
+}
+
+const regV = extension.RegulationsSchemaVersion
+
+func callAllRegulations(h inprocHost, version int) []error {
+	ctx := context.Background()
+	_, e1 := h.SearchRegulations(ctx, extension.RegulationsSearchRequest{SchemaVersion: version, Query: "医疗器械 临床评价"})
+	_, e2 := h.ResolveRegulationEvidence(ctx, extension.RegulationEvidenceRequest{SchemaVersion: version, CorpusRevision: "rev-1", NodeID: "n1"})
+	_, e3 := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: version, Query: "临床评价 指导原则"})
+	_, e4 := h.CaptureWeb(ctx, extension.WebCaptureRequest{SchemaVersion: version, URL: "https://www.nmpa.gov.cn/x", SearchQuery: "临床评价 指导原则"})
+	return []error{e1, e2, e3, e4}
+}
+
+func TestRegulationsUnavailableWithoutProvider(t *testing.T) {
+	h, st := newRegulationsTestHost(t)
+	for i, err := range callAllRegulations(h, regV) {
+		if !errors.Is(err, extension.ErrRegulationsUnavailable) {
+			t.Fatalf("method %d without provider: %v", i, err)
+		}
+	}
+	h.caps.regulations = nil
+	for i, err := range callAllRegulations(h, regV) {
+		if !errors.Is(err, extension.ErrRegulationsUnavailable) {
+			t.Fatalf("method %d without slot: %v", i, err)
+		}
+	}
+	if evs, err := st.ListAuditEvents("alice", 10); err != nil || len(evs) != 0 {
+		t.Fatalf("unavailable calls audited: %+v %v", evs, err)
+	}
+}
+
+func TestRegulationsRegistrationOnlyTrustedKbregOnce(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	first, second := &fakeRegulationsProvider{}, &fakeRegulationsProvider{}
+	if err := (pluginRegistry{pluginID: "rdm", caps: h.caps}).RegisterRegulationsProvider(first); err == nil {
+		t.Fatal("non-kbreg plugin registered a regulations provider")
+	}
+	kbreg := pluginRegistry{pluginID: "kbreg", caps: h.caps}
+	if err := kbreg.RegisterRegulationsProvider(nil); err == nil {
+		t.Fatal("nil provider registered")
+	}
+	if err := kbreg.RegisterRegulationsProvider(first); err != nil {
+		t.Fatal(err)
+	}
+	if err := kbreg.RegisterRegulationsProvider(second); err == nil {
+		t.Fatal("duplicate registration accepted")
+	}
+	if h.caps.regulations.get() != first {
+		t.Fatal("duplicate registration replaced the first provider")
+	}
+	if err := (pluginRegistry{pluginID: "kbreg"}).RegisterRegulationsProvider(first); err == nil {
+		t.Fatal("registration without a host slot accepted")
+	}
+}
+
+func TestRegulationsDeclarativeRegistrationRejected(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	p := &fakeRegulationsProvider{}
+	if err := (compiledRegistry{}).RegisterRegulationsProvider(p); err == nil {
+		t.Fatal("declarative registry accepted a regulations provider")
+	}
+	if err := (recordRegistry{Registry: pluginRegistry{pluginID: "kbreg", caps: h.caps}}).RegisterRegulationsProvider(p); err != nil {
+		t.Fatalf("record registry did not forward kbreg registration: %v", err)
+	}
+	if h.caps.regulations.get() != p {
+		t.Fatal("forwarded registration did not fill the slot")
+	}
+}
+
+func TestRegulationsCallerFilledFromDispatchContext(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	h.actor = "alice-session"
+	p := registerFakeRegulations(t, h)
+	p.web.State = extension.WebSearchStateOK
+	for i, err := range callAllRegulations(h, regV) {
+		if err != nil {
+			t.Fatalf("method %d: %v", i, err)
+		}
+	}
+	want := extension.RegulationsCaller{PluginID: "rdm", Actor: "alice-session", Owner: "alice"}
+	if len(p.callers) != 4 {
+		t.Fatalf("provider calls = %d", len(p.callers))
+	}
+	for i, got := range p.callers {
+		if got != want {
+			t.Fatalf("call %d caller = %+v, want %+v", i, got, want)
+		}
+	}
+}
+
+func TestRegulationsRejectsOtherSchemaVersions(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	p := registerFakeRegulations(t, h)
+	for _, version := range []int{0, regV + 1} {
+		for i, err := range callAllRegulations(h, version) {
+			if !errors.Is(err, errRegulationsSchema) {
+				t.Fatalf("schema %d method %d: %v", version, i, err)
+			}
+		}
+	}
+	if len(p.callers) != 0 {
+		t.Fatalf("provider reached with unsupported schema: %d calls", len(p.callers))
+	}
+}
+
+func TestRegulationsWebQueryBounds(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	p := registerFakeRegulations(t, h)
+	ctx := context.Background()
+	for _, q := range []string{"", "   \t\n", strings.Repeat("法", maxWebQueryRunes+1)} {
+		if _, err := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: q}); !errors.Is(err, errWebQueryInvalid) {
+			t.Fatalf("query of %d runes accepted: %v", len([]rune(q)), err)
+		}
+	}
+	if len(p.callers) != 0 {
+		t.Fatal("provider reached with an invalid query")
+	}
+	maxQuery := strings.Repeat("法", maxWebQueryRunes)
+	if _, err := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: "  " + maxQuery + " "}); err != nil {
+		t.Fatalf("256-rune query rejected: %v", err)
+	}
+	if len(p.webQueries) != 1 || p.webQueries[0] != maxQuery {
+		t.Fatalf("provider query was not trimmed: %q", p.webQueries)
+	}
+}
+
+func TestRegulationsExclusionRejectedBeforeProvider(t *testing.T) {
+	h, st := newRegulationsTestHost(t)
+	p := registerFakeRegulations(t, h)
+	ctx := context.Background()
+	query := "Project-Falcon 临床评价 指导原则"
+	res, err := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: query,
+		Exclusions: []string{"", "  ", "project-falcon"}})
+	if err != nil || res.State != extension.WebSearchStateRejected || res.SentQuery != "" || len(res.Results) != 0 {
+		t.Fatalf("excluded query result = %+v %v", res, err)
+	}
+	if len(p.callers) != 0 {
+		t.Fatal("provider received a query containing an excluded term")
+	}
+	evs, err := st.ListAuditEvents("alice", 10)
+	if err != nil || len(evs) != 1 || evs[0].Action != auditWebSearch {
+		t.Fatalf("rejection audit: %+v %v", evs, err)
+	}
+	if strings.Contains(strings.ToLower(evs[0].Evidence), "falcon") || !strings.Contains(evs[0].Evidence, `"state":"rejected"`) {
+		t.Fatalf("rejection audit evidence = %s", evs[0].Evidence)
+	}
+	if _, err := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: query, Exclusions: []string{"", " "}}); err != nil {
+		t.Fatal(err)
+	}
+	if len(p.callers) != 1 {
+		t.Fatal("blank exclusions blocked an allowed query")
+	}
+}
+
+func TestRegulationsProviderStatesPassThroughUnchanged(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	p := registerFakeRegulations(t, h)
+	at := time.Date(2026, 10, 18, 9, 0, 0, 0, time.UTC)
+	p.search = extension.RegulationsSearchResult{CorpusRevision: "rev-7", State: extension.RegulationsStateDegraded,
+		DegradedReasons: []string{"vector_index_unavailable"},
+		Hits: []extension.RegulationHit{{RegulationID: "r1", EditionID: "e1", NodeID: "n1",
+			Disclosure: extension.RegulationDisclosureWithheld, WithheldReason: "rights"},
+			{RegulationID: "r2", EditionID: "e2", NodeID: "n2", Disclosure: extension.RegulationDisclosureMetadataOnly}}}
+	p.evidence = extension.RegulationEvidence{CorpusRevision: "rev-7", NodeID: "n1",
+		Disclosure: extension.RegulationDisclosureWithheld, WithheldReason: "rights", HashVerified: false}
+	p.web = extension.WebSearchResult{Provider: "fake", SentQuery: "q", SearchedAt: at,
+		State: extension.WebSearchStateRateLimited, Reason: "quota"}
+	p.capture = extension.WebCapture{CaptureID: "c1", FetchedAt: at, Retention: extension.WebRetentionMetadataOnly,
+		State: extension.WebCaptureStateRejected, Reason: "robots"}
+	ctx := context.Background()
+	search, err := h.SearchRegulations(ctx, extension.RegulationsSearchRequest{SchemaVersion: regV, Query: "q"})
+	if err != nil || !reflect.DeepEqual(search, p.search) {
+		t.Fatalf("search = %+v %v", search, err)
+	}
+	evidence, err := h.ResolveRegulationEvidence(ctx, extension.RegulationEvidenceRequest{SchemaVersion: regV, CorpusRevision: "rev-7", NodeID: "n1"})
+	if err != nil || !reflect.DeepEqual(evidence, p.evidence) {
+		t.Fatalf("evidence = %+v %v", evidence, err)
+	}
+	web, err := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: "q"})
+	if err != nil || !reflect.DeepEqual(web, p.web) {
+		t.Fatalf("web = %+v %v", web, err)
+	}
+	p.web.State = extension.WebSearchStateRejected
+	web, err = h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: "q"})
+	if err != nil || web.State != extension.WebSearchStateRejected {
+		t.Fatalf("provider rejection rewritten: %+v %v", web, err)
+	}
+	capture, err := h.CaptureWeb(ctx, extension.WebCaptureRequest{SchemaVersion: regV, URL: "https://example.org"})
+	if err != nil || !reflect.DeepEqual(capture, p.capture) {
+		t.Fatalf("capture = %+v %v", capture, err)
+	}
+	p.err = errors.New("provider failure")
+	if _, err := h.SearchRegulations(ctx, extension.RegulationsSearchRequest{SchemaVersion: regV, Query: "q"}); !errors.Is(err, p.err) {
+		t.Fatalf("provider failure wrapped as success: %v", err)
+	}
+}
+
+func TestRegulationsAuditEvidenceOmitsQueryAndText(t *testing.T) {
+	h, st := newRegulationsTestHost(t)
+	p := registerFakeRegulations(t, h)
+	const (
+		secretQuery   = "第十七条 secret-query-text"
+		secretExcerpt = "SECRET-EXCERPT 原文片段"
+		secretPage    = "SECRET-PAGE 网页全文"
+	)
+	p.search = extension.RegulationsSearchResult{CorpusRevision: "rev-9", State: extension.RegulationsStateOK,
+		Hits: []extension.RegulationHit{{NodeID: "n1", Excerpt: secretExcerpt, Disclosure: extension.RegulationDisclosureExcerpt}}}
+	p.evidence = extension.RegulationEvidence{CorpusRevision: "rev-9", NodeID: "n1", Excerpt: secretExcerpt,
+		Disclosure: extension.RegulationDisclosureFull, HashVerified: true}
+	p.web = extension.WebSearchResult{SentQuery: secretQuery, State: extension.WebSearchStateOK,
+		Results: []extension.WebSearchHit{{Rank: 1, URL: "https://example.org", Snippet: secretExcerpt}}}
+	p.capture = extension.WebCapture{State: extension.WebCaptureStateCaptured, Retention: extension.WebRetentionFull,
+		Text: secretPage, Candidates: []extension.WebClauseCandidate{{Excerpt: secretExcerpt}}}
+	ctx := context.Background()
+	if _, err := h.SearchRegulations(ctx, extension.RegulationsSearchRequest{SchemaVersion: regV, Query: secretQuery}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := h.ResolveRegulationEvidence(ctx, extension.RegulationEvidenceRequest{SchemaVersion: regV, CorpusRevision: "rev-9", NodeID: "n1"}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := h.SearchWeb(ctx, extension.WebSearchRequest{SchemaVersion: regV, Query: " " + secretQuery + " "}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := h.CaptureWeb(ctx, extension.WebCaptureRequest{SchemaVersion: regV, URL: "https://example.org", SearchQuery: secretQuery}); err != nil {
+		t.Fatal(err)
+	}
+	evs, err := st.ListAuditEvents("alice", 10)
+	if err != nil || len(evs) != 4 {
+		t.Fatalf("audit events = %+v %v", evs, err)
+	}
+	sum := sha256.Sum256([]byte(secretQuery))
+	digest := hex.EncodeToString(sum[:])
+	want := map[string]regulationsAudit{
+		auditRegulationsSearch:   {Revision: "rev-9", Count: 1, State: "ok", QuerySHA256: digest},
+		auditRegulationsEvidence: {Revision: "rev-9", Count: 1, State: "ok"},
+		auditWebSearch:           {Count: 1, State: "ok", QuerySHA256: digest},
+		auditWebCapture:          {Count: 1, State: "captured", QuerySHA256: digest},
+	}
+	for _, ev := range evs {
+		for _, secret := range []string{"secret-query-text", "第十七条", "SECRET-EXCERPT", "原文片段", "SECRET-PAGE", "网页全文"} {
+			if strings.Contains(ev.Evidence, secret) || strings.Contains(ev.Target, secret) {
+				t.Fatalf("%s audit leaks %q: %s", ev.Action, secret, ev.Evidence)
+			}
+		}
+		var fields map[string]any
+		if err := json.Unmarshal([]byte(ev.Evidence), &fields); err != nil {
+			t.Fatal(err)
+		}
+		for k := range fields {
+			if k != "revision" && k != "count" && k != "state" && k != "querySha256" {
+				t.Fatalf("%s audit has unexpected field %q", ev.Action, k)
+			}
+		}
+		var got regulationsAudit
+		if err := json.Unmarshal([]byte(ev.Evidence), &got); err != nil {
+			t.Fatal(err)
+		}
+		if w, ok := want[ev.Action]; !ok || got != w || ev.Owner != "alice" {
+			t.Fatalf("%s audit = %+v owner=%s, want %+v", ev.Action, got, ev.Owner, w)
+		}
+		delete(want, ev.Action)
+	}
+}
+
+func TestRegulationsRequireEffectiveAccount(t *testing.T) {
+	h, _ := newRegulationsTestHost(t)
+	p := registerFakeRegulations(t, h)
+	h.caps.accountGuard = func(string) error { return store.ErrAccountForbidden }
+	for i, err := range callAllRegulations(h, regV) {
+		if !errors.Is(err, store.ErrAccountForbidden) {
+			t.Fatalf("method %d ignored the account guard: %v", i, err)
+		}
+	}
+	if len(p.callers) != 0 {
+		t.Fatal("provider reached for an ineffective account")
+	}
+}

internal/app/scoped_host_test.go

@@ -24,6 +24,9 @@ func TestScopedHostFactory(t *testing.T) {
 		t.Fatal(err)
 	}
 	t.Cleanup(func() { st.Close() })
+	if err := st.EnsureUser("alice", ""); err != nil {
+		t.Fatal(err)
+	}
 	set := settings.NewService(st)
 	pipe := rag.NewPipeline(st, set, nil, nil)
 	caps := hostcaps{st: st, pipe: pipe, set: set}
@@ -39,6 +42,9 @@ func TestScopedHostFactory(t *testing.T) {
 	if h.Owner() != "alice" || h.PluginID() != "rdm" {
 		t.Fatalf("Owner/PluginID = %s/%s, want alice/rdm", h.Owner(), h.PluginID())
 	}
+	if _, ok := h.(extension.DelegatedProjectProjectionHost); ok {
+		t.Fatal("globally reconstructed Host exposed request-bound projection authority")
+	}
 	// KV 往返落 owner 作用域。
 	if err := h.KVPut("k1", "v1"); err != nil {
 		t.Fatal(err)

internal/app/service_store.go

@@ -0,0 +1,111 @@
+package app
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"agent-system-backend/internal/blobstore"
+	"agent-system-backend/internal/instanceguard"
+	"agent-system-backend/internal/store"
+)
+
+// openServiceStore 打开活动服务使用的存储。
+// SQLite 档先取活动服务锁，再打开（打开即迁移），然后核对守卫标记。
+// 返回的函数先关存储再放锁。
+func openServiceStore(opt Options) (*store.Store, func(), error) {
+	nop := func() {}
+	if opt.StorageDSN != "" {
+		artifacts := opt.ArtifactsDir
+		if artifacts == "" {
+			artifacts = filepath.Join(opt.DataDir, "artifacts")
+		}
+		// 共享工件（U5/KTD9）：配置了 S3 兼容对象存储时注入（多实例共享）；
+		// 未配置回落本地目录（单实例/共享卷）。凭据只经环境（不入库不入报告）。
+		blobs, berr := blobstore.NewS3FromEnv()
+		if berr != nil {
+			return nil, nop, fmt.Errorf("blobstore s3: %w", berr)
+		}
+		if blobs != nil {
+			log.Printf("artifacts: shared via S3-compatible object storage (prefix %q)", blobs.Prefix)
+		}
+		st, err := store.OpenPostgresWithOptions(opt.StorageDSN, artifacts, opt.PGPool, blobs)
+		if err != nil && opt.Tier == "team" {
+			// team 档拒绝就绪（R2）：PG 故障不回落 SQLite，错误必须明说。
+			return nil, nop, fmt.Errorf("team 档打开 PostgreSQL 失败，拒绝就绪（不回落 SQLite）: %w", err)
+		}
+		if err != nil {
+			return nil, nop, fmt.Errorf("open store: %w", err)
+		}
+		if err := verifyConfiguredIdentity(st, "pg"); err != nil {
+			_ = st.Close()
+			return nil, nop, err
+		}
+		return st, func() { _ = st.Close() }, nil
+	}
+
+	lease, err := instanceguard.Acquire(opt.DataDir)
+	if err != nil {
+		return nil, nop, fmt.Errorf("instance guard: %w", err)
+	}
+	releaseLease := func() { lease.Release() }
+	if err := lease.AutomaticRefusal(); err != nil {
+		adoptable := opt.AdoptInstanceGuard && (errors.Is(err, instanceguard.ErrDBReplaced) || errors.Is(err, instanceguard.ErrLockCorrupt))
+		if !adoptable {
+			releaseLease()
+			return nil, nop, fmt.Errorf("instance guard: %w", err)
+		}
+	}
+	st, err := store.OpenSQLite(lease.DBPath())
+	if err != nil {
+		releaseLease()
+		return nil, nop, fmt.Errorf("open store: %w", err)
+	}
+	if err := verifyConfiguredIdentity(st, "sqlite"); err != nil {
+		_ = st.Close()
+		releaseLease()
+		return nil, nop, err
+	}
+	if err := instanceguard.Bind(st, lease, instanceguard.BindOptions{
+		Adopt:      opt.AdoptInstanceGuard,
+		InstanceID: strings.TrimSpace(os.Getenv("AGENT_SYSTEM_INSTANCE_ID")),
+	}); err != nil {
+		_ = st.Close()
+		releaseLease()
+		return nil, nop, fmt.Errorf("instance guard: %w", err)
+	}
+	return st, func() {
+		_ = st.Close()
+		lease.Release()
+	}, nil
+}
+
+// verifyConfiguredIdentity U1 I3：svc 注入的服务实例身份（manifest.instance_id）与库内 marker 对齐；
+// 未设置则跳过（兼容未接线旧调用方）。与 --instance（runs 进程标识）无关。
+func verifyConfiguredIdentity(st *store.Store, defaultRef string) error {
+	sysID := strings.TrimSpace(os.Getenv("AGENT_SYSTEM_INSTANCE_ID"))
+	if sysID == "" {
+		return nil
+	}
+	dbref := strings.TrimSpace(os.Getenv("AGENT_SYSTEM_DBREF"))
+	if dbref == "" {
+		dbref = defaultRef
+	}
+	if err := st.VerifySystemIdentity(sysID, dbref); err != nil {
+		return fmt.Errorf("system identity: %w", err)
+	}
+	return nil
+}
+
+// Migrate 执行显式迁移。SQLite 必须先取得活动服务锁，有服务占用则拒绝。
+func Migrate(opt Options) error {
+	_, release, err := openServiceStore(opt)
+	if err != nil {
+		return err
+	}
+	release()
+	return nil
+}

internal/app/surface_audit_actor_test.go

@@ -0,0 +1,115 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"path/filepath"
+	"testing"
+	"time"
+
+	agentcommand "agent-command"
+	"agent-system-backend/internal/cmdbus"
+	"agent-system-backend/internal/store"
+	"agent-system-backend/internal/surfacesvc"
+	"agent-system-backend/pkg/extension"
+	core "agent-system-core"
+)
+
+func TestSurfaceButtonDispatchUsesAuthenticatedActor(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "audit.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	if err := st.EnsureUser("alice", "Alice at action"); err != nil {
+		t.Fatal(err)
+	}
+	p, err := st.CreateProject("alice", "A")
+	if err != nil {
+		t.Fatal(err)
+	}
+	c, err := st.CreateConversation("alice", string(p.ID), "work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	bus := cmdbus.New(st, nil, func() time.Time { return time.Now().UTC() })
+	if err := bus.RegisterBuiltin(agentcommand.CommandSpec{ID: "demo.submit", Title: "Submit"}, "", func(context.Context, cmdbus.Request) (any, error) { return "ok", nil }); err != nil {
+		t.Fatal(err)
+	}
+	result, err := dispatchSurfaceAction(context.Background(), bus, surfacesvc.ActionDispatch{CommandID: "demo.submit", Owner: "alice", ConversationID: string(c.ID)})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result.State != "committed" {
+		t.Fatalf("state: %s", result.State)
+	}
+	rows, _, _, err := st.ListProjectCommandAudits("alice", string(p.ID), 0, 0, 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(rows) != 1 || rows[0].Envelope.Actor != "alice" || rows[0].ActorName != "Alice at action" {
+		t.Fatalf("button audit actor: %+v", rows)
+	}
+}
+
+func TestCompiledHandlerReceivesHostOperationID(t *testing.T) {
+	st, err := store.OpenSQLite(filepath.Join(t.TempDir(), "audit.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	p, err := st.CreateProject("alice", "A")
+	if err != nil {
+		t.Fatal(err)
+	}
+	c, err := st.CreateConversation("alice", string(p.ID), "work", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	bus := cmdbus.New(st, nil, func() time.Time { return time.Now().UTC() })
+	slot := &projectAuditSlot{}
+	caps := hostcaps{st: st, projectAudit: slot}
+	reg := pluginRegistry{compiledRegistry: compiledRegistry{bus: bus}, pluginID: "rdm", caps: caps}
+	var seen string
+	if err := reg.AddCommandHandler(json.RawMessage(`{"id":"rdm.confirm","title":"Confirm"}`), func(_ context.Context, _ extension.Host, req extension.Request) (any, error) {
+		seen = req.OperationID
+		return "domain-committed", nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	resp := bus.Dispatch(context.Background(), cmdbus.Request{ID: "rdm.confirm", Actor: "alice", Owner: "alice", ConversationID: string(c.ID)})
+	rows, _, _, err := st.ListProjectCommandAudits("alice", string(p.ID), 0, 0, 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if seen == "" || resp.Receipt.OperationID != seen || len(rows) != 1 || rows[0].Envelope.OperationID != seen {
+		t.Fatalf("handler/domain correlation: seen=%q receipt=%+v rows=%+v", seen, resp.Receipt, rows)
+	}
+	if err := reg.RegisterProjectAuditAuthorizer(func(actor string, project core.ID) (bool, error) { return actor == "bob" && project == p.ID, nil }); err != nil {
+		t.Fatal(err)
+	}
+	publisherFactory, err := (recordRegistry{Registry: reg}).RegisterProjectAuditLinkVerifier(func(_ context.Context, proof extension.ProjectAuditLinkProof) (bool, error) {
+		return proof.Owner == "alice" && proof.ProjectID == p.ID && proof.OperationID == seen && proof.SourceID == "domain-commit-1" && proof.ResourceID == "doc-1", nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := reg.RegisterProjectAuditDisclosureAuthorizer(func(_ context.Context, actor string, r extension.ProjectAuditLinkedResource) (extension.ProjectAuditDisclosure, error) {
+		return extension.ProjectAuditDisclosure{Metadata: actor == "bob" && r.ResourceID == "doc-1"}, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	publisher, err := publisherFactory.ForOwner("alice")
+	if err != nil {
+		t.Fatal(err)
+	}
+	linked, err := publisher.PublishProjectAuditLink(context.Background(), extension.ProjectAuditLinkRequest{ProjectID: p.ID, OperationID: seen, SourceKind: "domain-commit", SourceID: "domain-commit-1", ResourceKind: "document", ResourceID: "doc-1", DisclosureClass: "metadata", IdempotencyKey: "outbox-1"})
+	if err != nil || linked.HostAuditOffset != rows[0].Offset {
+		t.Fatalf("publish by trusted operation: %+v %v", linked, err)
+	}
+	bob := inprocHost{caps: caps, owner: "bob", actor: "bob", pluginID: "rdm"}
+	page, err := bob.QueryProjectAudit(context.Background(), extension.ProjectAuditQuery{ProjectID: p.ID, LinkedSourceKind: "domain-commit", LinkedSourceID: "domain-commit-1", LinkedHostOffset: linked.HostAuditOffset})
+	if err != nil || len(page.Receipts) != 1 || page.Receipts[0].OperationID != seen {
+		t.Fatalf("linked read: %+v %v", page, err)
+	}
+}

internal/app/surface_dispatch.go

@@ -0,0 +1,29 @@
+package app
+
+import (
+	"context"
+	"fmt"
+
+	"agent-system-backend/internal/cmdbus"
+	"agent-system-backend/internal/surfacesvc"
+)
+
+// dispatchSurfaceAction receives Owner from SurfaceService's authenticated
+// caller. The button is acting for that user, so both Actor and Owner must be
+// populated before the command bus writes its audit envelope.
+func dispatchSurfaceAction(ctx context.Context, bus *cmdbus.Bus, d surfacesvc.ActionDispatch) (surfacesvc.ActionOutcome, error) {
+	if cmdbus.RequiresProjectWorkDecision(d.CommandID) {
+		return surfacesvc.ActionOutcome{}, fmt.Errorf("project formal action requires a committed conversation source preflight")
+	}
+	resp := bus.Dispatch(ctx, cmdbus.Request{ID: d.CommandID, Params: d.Params,
+		Entrance: "button", Actor: d.Owner, Owner: d.Owner, ConversationID: d.ConversationID})
+	state := "committed"
+	if resp.Receipt.State != "" {
+		state = string(resp.Receipt.State)
+	}
+	cardID := ""
+	if resp.Card != nil {
+		cardID = string(resp.Card.ID)
+	}
+	return surfacesvc.ActionOutcome{State: state, CardID: cardID, Receipt: resp.Receipt, Payload: resp.Payload}, nil
+}

internal/cardsvc/account_checked.go

@@ -0,0 +1,221 @@
+package cardsvc
+
+import (
+	"agent-system-backend/internal/store"
+	core "agent-system-core"
+	"errors"
+)
+
+func (s *Service) requireAccountCheckedEmitter() error {
+	if s.emit != nil && s.accountCheckedEmit == nil {
+		return ErrGuardedEmitterRequired
+	}
+	return nil
+}
+
+func (s *Service) ResolveByRefAccountChecked(actor, ref, actionID, answer string, allowImplicitDefault bool) error {
+	if err := s.requireAccountCheckedEmitter(); err != nil {
+		return err
+	}
+	id, err := s.st.CardIDByRef(actor, ref)
+	if errors.Is(err, store.ErrNotFound) {
+		return nil
+	}
+	if err != nil {
+		return err
+	}
+	card, version, err := s.st.GetCardVersion(actor, id)
+	if err != nil {
+		return err
+	}
+	if card.Status.Terminal() {
+		return nil
+	}
+	card.Status = core.CardResolved
+	recordAnswer(&card, actionID, answer)
+	if err := s.UpdateVersionedAccountChecked(actor, card, version, allowImplicitDefault); errors.Is(err, store.ErrConflict) {
+		return nil
+	} else if err != nil {
+		return err
+	}
+	return s.emitCardAccountChecked(actor, card, core.EvCardResolved,
+		core.CardResolvedPayload{CardID: card.ID, ActionID: actionID, Answer: answer})
+}
+
+// AppendAccountChecked preserves stream-card throttling while fencing its
+// durable body update against account disable.
+func (s *Service) AppendAccountChecked(actor, id, text string, allowImplicitDefault bool) error {
+	if err := s.requireAccountCheckedEmitter(); err != nil {
+		return err
+	}
+	card, version, err := s.st.GetCardVersion(actor, id)
+	if err != nil {
+		return err
+	}
+	if text != "" {
+		if n := len(card.Body); n > 0 && card.Body[n-1].Type == core.UIMarkdown {
+			card.Body[n-1].Markdown += text
+		} else {
+			card.Body = append(card.Body, core.UINode{Type: core.UIMarkdown, Markdown: text})
+		}
+	}
+	card.UpdatedAt = s.now().UTC()
+	if err := s.st.SaveCardVersionedAccountChecked(actor, &card, "", version, allowImplicitDefault); err != nil {
+		return err
+	}
+	if card.ConversationID == "" && card.ProjectID == "" {
+		return nil
+	}
+	s.emitMu.Lock()
+	last, seen := s.lastEmit[id]
+	emit := !seen || s.now().Sub(last) >= cardAppendWindow
+	if emit {
+		s.lastEmit[id] = s.now()
+	}
+	s.emitMu.Unlock()
+	if !emit {
+		return nil
+	}
+	return s.emitCardAccountChecked(actor, card, core.EvCardUpdated, core.CardPayload{Card: card})
+}
+
+func (s *Service) emitCardAccountChecked(actor string, card core.ActivityCard, typ core.StreamEventType, payload any) error {
+	if s.accountCheckedEmit == nil || (card.ConversationID == "" && card.ProjectID == "") {
+		return nil
+	}
+	if card.ConversationID != "" {
+		if err := s.accountCheckedEmit(actor, card.ConversationID, card.SourceRunID, typ, payload); err != nil {
+			return err
+		}
+		if !s.MirrorConvCards {
+			return nil
+		}
+	}
+	if card.ProjectID != "" {
+		return s.accountCheckedEmit(actor, string(core.ProjectChannelKey(card.ProjectID)), card.SourceRunID, typ, payload)
+	}
+	return nil
+}
+
+// CreateAccountChecked creates a card under the actor's final Store fence.
+func (s *Service) CreateAccountChecked(actor string, card core.ActivityCard, ref string, allowImplicitDefault bool) (core.ActivityCard, error) {
+	if err := s.requireAccountCheckedEmitter(); err != nil {
+		return card, err
+	}
+	if card.ID == "" {
+		card.ID = store.NewID("card")
+	}
+	now := s.now().UTC()
+	card.CreatedAt, card.UpdatedAt = now, now
+	if card.Status == "" {
+		card.Status = core.CardActive
+	}
+	if err := s.st.SaveCardAccountChecked(actor, &card, ref, allowImplicitDefault); err != nil {
+		return card, err
+	}
+	return card, s.emitCardAccountChecked(actor, card, core.EvCardCreated, core.CardPayload{Card: card})
+}
+
+func (s *Service) updateVersionedAccountChecked(actor string, card core.ActivityCard, expectedVersion int, allowImplicitDefault bool) (core.ActivityCard, error) {
+	if err := s.requireAccountCheckedEmitter(); err != nil {
+		return card, err
+	}
+	card.UpdatedAt = s.now().UTC()
+	if err := s.st.SaveCardVersionedAccountChecked(actor, &card, "", expectedVersion, allowImplicitDefault); err != nil {
+		return card, err
+	}
+	return card, s.emitCardAccountChecked(actor, card, core.EvCardUpdated, core.CardPayload{Card: card})
+}
+
+func (s *Service) UpdateVersionedAccountChecked(actor string, card core.ActivityCard, expectedVersion int, allowImplicitDefault bool) error {
+	_, err := s.updateVersionedAccountChecked(actor, card, expectedVersion, allowImplicitDefault)
+	return err
+}
+
+func (s *Service) SetPinnedAccountChecked(actor, id string, pinned, allowImplicitDefault bool) (core.ActivityCard, error) {
+	card, version, err := s.st.GetCardVersion(actor, id)
+	if err != nil {
+		return card, err
+	}
+	card.Pinned = pinned
+	card, err = s.updateVersionedAccountChecked(actor, card, version, allowImplicitDefault)
+	if err != nil {
+		return card, err
+	}
+	return card, nil
+}
+
+func (s *Service) SetStatusAccountChecked(actor, id string, status core.CardStatus, tone, note string, allowImplicitDefault bool) (core.ActivityCard, error) {
+	card, version, err := s.st.GetCardVersion(actor, id)
+	if err != nil {
+		return card, err
+	}
+	card.Status = status
+	if tone != "" {
+		card.Tone = tone
+	}
+	card, err = s.updateVersionedAccountChecked(actor, card, version, allowImplicitDefault)
+	if err != nil {
+		return card, err
+	}
+	return card, s.emitCardAccountChecked(actor, card, core.EvCardStatus,
+		core.CardStatusPayload{CardID: card.ID, Status: status, Tone: card.Tone, Note: note})
+}
+
+func (s *Service) DismissAccountChecked(actor, id string, allowImplicitDefault bool) (core.ActivityCard, error) {
+	return s.SetStatusAccountChecked(actor, id, core.CardDismissed, "", "dismissed by user", allowImplicitDefault)
+}
+
+func (s *Service) ActionAccountChecked(actor, id, actionID, freeText string, allowImplicitDefault bool) (core.ActivityCard, string, error) {
+	card, version, err := s.st.GetCardVersion(actor, id)
+	if err != nil {
+		return card, "", err
+	}
+	if card.Status != core.CardActionRequired {
+		return card, "", ErrNotAwaiting
+	}
+	label, found := actionID, false
+	for _, action := range card.Actions {
+		if action.ID == actionID {
+			label, found = action.Label, true
+			break
+		}
+	}
+	if !found {
+		if actionID == "" && freeText != "" {
+			label = freeText
+		} else {
+			return card, "", ErrNoAction
+		}
+	}
+	card.Status = core.CardResolved
+	recordAnswer(&card, actionID, freeText)
+	card, err = s.updateVersionedAccountChecked(actor, card, version, allowImplicitDefault)
+	if err != nil {
+		return card, "", err
+	}
+	err = s.emitCardAccountChecked(actor, card, core.EvCardResolved,
+		core.CardResolvedPayload{CardID: card.ID, ActionID: actionID, Answer: freeText})
+	return card, label, err
+}
+
+// ToProjectAccountChecked performs the copy and dismissal in one transaction.
+// Events are published after commit through the actor-aware event sink.
+func (s *Service) ToProjectAccountChecked(actor, id string, allowImplicitDefault bool) (core.ActivityCard, error) {
+	if err := s.requireAccountCheckedEmitter(); err != nil {
+		return core.ActivityCard{}, err
+	}
+	archived, origin, created, err := s.st.ArchiveCardToProjectAccountChecked(actor, id, s.now().UTC(), allowImplicitDefault)
+	if err != nil || !created {
+		return archived, err
+	}
+	if err := s.emitCardAccountChecked(actor, archived, core.EvCardCreated, core.CardPayload{Card: archived}); err != nil {
+		return archived, err
+	}
+	if err := s.emitCardAccountChecked(actor, origin, core.EvCardUpdated, core.CardPayload{Card: origin}); err != nil {
+		return archived, err
+	}
+	err = s.emitCardAccountChecked(actor, origin, core.EvCardStatus,
+		core.CardStatusPayload{CardID: origin.ID, Status: core.CardDismissed, Tone: origin.Tone, Note: "已留档到项目"})
+	return archived, err
+}

internal/cardsvc/account_checked_test.go

@@ -0,0 +1,109 @@
+package cardsvc
+
+import (
+	"errors"
+	"testing"
+
+	"agent-system-backend/internal/store"
+	core "agent-system-core"
+)
+
+func TestAccountCheckedCardActionsUseActorEventSinkAndRespectDisable(t *testing.T) {
+	st, err := store.OpenSQLite(t.TempDir() + "/cards.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { st.Close() })
+	if err := st.CreateAccount("admin", "", "", true); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.CreateAccount("alice", "", "", false); err != nil {
+		t.Fatal(err)
+	}
+	project, err := st.CreateProject("alice", "cards")
+	if err != nil {
+		t.Fatal(err)
+	}
+	conv, err := st.CreateConversation("alice", project.ID, "cards", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	legacyCalls := 0
+	svc := New(st, func(string, string, core.StreamEventType, any) error {
+		legacyCalls++
+		return nil
+	})
+	type emitted struct {
+		actor, channel string
+		typ            core.StreamEventType
+	}
+	var guarded []emitted
+	svc.SetAccountCheckedEmitter(func(actor, channel, runID string, typ core.StreamEventType, payload any) error {
+		guarded = append(guarded, emitted{actor, channel, typ})
+		return nil
+	})
+	base := core.ActivityCard{ProjectID: project.ID, ConversationID: conv.ID, Title: "Action",
+		Status: core.CardActionRequired, Actions: []core.UIAction{{ID: "yes", Label: "Approve"}}}
+	action, err := svc.CreateAccountChecked("alice", base, "", false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, label, err := svc.ActionAccountChecked("alice", action.ID, "yes", "", false); err != nil || label != "Approve" {
+		t.Fatalf("guarded action: label=%q err=%v", label, err)
+	}
+	pending, err := svc.CreateAccountChecked("alice", base, "", false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	pin, err := svc.CreateAccountChecked("alice", core.ActivityCard{ProjectID: project.ID, ConversationID: conv.ID, Title: "Pin"}, "", false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := svc.SetPinnedAccountChecked("alice", pin.ID, true, false); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := svc.DismissAccountChecked("alice", pin.ID, false); err != nil {
+		t.Fatal(err)
+	}
+	archive, err := svc.CreateAccountChecked("alice", core.ActivityCard{ProjectID: project.ID, ConversationID: conv.ID, Title: "Archive"}, "", false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	archived, err := svc.ToProjectAccountChecked("alice", archive.ID, false)
+	if err != nil || archived.ConversationID != "" {
+		t.Fatalf("guarded archive: %+v %v", archived, err)
+	}
+	if legacyCalls != 0 {
+		t.Fatalf("guarded card operations used unguarded emitter %d times", legacyCalls)
+	}
+	if len(guarded) == 0 {
+		t.Fatal("guarded operations published no events")
+	}
+	for _, event := range guarded {
+		if event.actor != "alice" {
+			t.Fatalf("event actor lost: %+v", event)
+		}
+	}
+	before := len(guarded)
+	account, err := st.GetAccountByOwner("alice")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := st.SetAccountEnabled("admin", account.ID, account.StateVersion, false); err != nil {
+		t.Fatal(err)
+	}
+	for _, mutate := range []func() error{
+		func() error { _, err := svc.CreateAccountChecked("alice", base, "", false); return err },
+		func() error { _, _, err := svc.ActionAccountChecked("alice", pending.ID, "yes", "", false); return err },
+		func() error { _, err := svc.SetPinnedAccountChecked("alice", pin.ID, false, false); return err },
+		func() error { _, err := svc.DismissAccountChecked("alice", pin.ID, false); return err },
+		func() error { _, err := svc.ToProjectAccountChecked("alice", archive.ID, false); return err },
+	} {
+		if err := mutate(); !errors.Is(err, store.ErrAccountForbidden) {
+			t.Fatalf("disabled actor mutated card: %v", err)
+		}
+	}
+	if len(guarded) != before {
+		t.Fatalf("disabled actor published %d events", len(guarded)-before)
+	}
+}

internal/cardsvc/cardsvc.go

@@ -17,19 +17,26 @@ import (
 // 获得持久化、seq 排序、断线重放与终态对账（Stream 契约）。
 type Emitter func(conversationID, runID string, typ core.StreamEventType, payload any) error
 
+// AccountCheckedEmitter persists an actor-attributed event through its own
+// final account-checked Store transaction. The card write and event emission
+// are separate commits; the application wires this to its guarded event sink.
+type AccountCheckedEmitter func(actor, conversationID, runID string, typ core.StreamEventType, payload any) error
+
 var (
-	ErrNotFound    = store.ErrNotFound // 语义对齐存储层：跨租户/不存在一律 NotFound
-	ErrNoAction    = errors.New("card: action not found")
-	ErrNotAwaiting = errors.New("card: not awaiting action")
+	ErrNotFound               = store.ErrNotFound // 语义对齐存储层：跨租户/不存在一律 NotFound
+	ErrNoAction               = errors.New("card: action not found")
+	ErrNotAwaiting            = errors.New("card: not awaiting action")
+	ErrGuardedEmitterRequired = errors.New("card: account-checked emitter required")
 )
 
 // cardAppendWindow 是流式追加（Append）的 card.updated 发布节流窗口（D45）。
 const cardAppendWindow = 250 * time.Millisecond
 
 type Service struct {
-	st                *store.Store
-	emit              Emitter
-	projectSharedEmit ProjectSharedEmitter
+	st                 *store.Store
+	emit               Emitter
+	accountCheckedEmit AccountCheckedEmitter
+	projectSharedEmit  ProjectSharedEmitter
 	// MirrorConvCards EXT-12：会话卡是否镜像进项目公共流（缺省 true=现状全量
 	// 镜像；false 时会话卡只进本人会话流，项目级卡不受影响）。
 	MirrorConvCards bool
@@ -42,6 +49,10 @@ func New(st *store.Store, emit Emitter) *Service {
 	return &Service{st: st, emit: emit, now: time.Now, lastEmit: map[string]time.Time{}, MirrorConvCards: true}
 }
 
+func (s *Service) SetAccountCheckedEmitter(emit AccountCheckedEmitter) {
+	s.accountCheckedEmit = emit
+}
+
 // ProjectSharedEmitter is an internal trusted publication adapter. It is never
 // bound to model arguments or exposed as a mandatory extension capability.
 type ProjectSharedEmitter func(owner, producer, channel, runID string, typ core.StreamEventType, payload any) error
@@ -124,11 +135,20 @@ func (s *Service) Create(owner string, card core.ActivityCard, ref string) (core
 }
 
 // Get 读取单卡。
-func (s *Service) Get(owner, id string) (core.ActivityCard, error) { return s.st.GetCard(owner, id) }
+func (s *Service) Get(owner, id string) (core.ActivityCard, error) {
+	c, err := s.st.GetCard(owner, id)
+	return s.presentResolved(owner, c), err
+}
 
 // List 按会话列出（updated_at 降序；置顶与待办排序是前端关注点）。
 func (s *Service) List(owner, conversationID string) ([]core.ActivityCard, error) {
-	return s.st.ListCards(owner, conversationID)
+	cards, err := s.st.ListCards(owner, conversationID)
+	if err == nil {
+		for i := range cards {
+			cards[i] = s.presentResolved(owner, cards[i])
+		}
+	}
+	return cards, err
 }
 
 // Update 保存整卡变更（流式 Body 增量等）并发布 card.updated；ref 保持原值。
@@ -245,6 +265,7 @@ func (s *Service) Action(owner, id, actionID, freeText string) (core.ActivityCar
 		return c, "", ErrNoAction
 	}
 	c.Status = core.CardResolved
+	recordAnswer(&c, actionID, freeText)
 	if err := s.UpdateVersioned(owner, c, ver); err != nil {
 		return c, "", err
 	}
@@ -306,6 +327,7 @@ func (s *Service) ResolveByRef(owner, ref, actionID, answer string) error {
 		return nil // 已决（双现任一侧先到）
 	}
 	c.Status = core.CardResolved
+	recordAnswer(&c, actionID, answer)
 	if err := s.UpdateVersioned(owner, c, ver); err != nil {
 		if errors.Is(err, store.ErrConflict) {
 			return nil // 双现任一侧先到（版本竞争败者）：不重试，卡以先到侧为准

internal/cardsvc/resolution.go

@@ -0,0 +1,59 @@
+package cardsvc
+
+import (
+	core "agent-system-core"
+	"strings"
+)
+
+func recordAnswer(card *core.ActivityCard, actionID, answer string) {
+	label := actionID
+	for _, action := range card.Actions {
+		if action.ID == actionID {
+			label = action.Label
+			break
+		}
+	}
+	body := []core.UINode{}
+	for _, node := range card.Body {
+		if node.Type == core.UIMarkdown && (strings.Contains(node.Markdown, "可在输入框自由输入") || strings.Contains(node.Markdown, "自由输入回应")) {
+			continue
+		}
+		body = append(body, node)
+	}
+	pairs := [][2]string{}
+	if label != "" {
+		pairs = append(pairs, [2]string{"你的选择", label})
+	}
+	if strings.TrimSpace(answer) != "" && answer != label {
+		pairs = append(pairs, [2]string{"补充说明", answer})
+	}
+	if len(pairs) > 0 {
+		body = append(body, core.UINode{Type: core.UIKV, KV: pairs})
+	}
+	card.Body = body
+}
+
+func (s *Service) presentResolved(owner string, card core.ActivityCard) core.ActivityCard {
+	if card.Status != core.CardResolved {
+		return card
+	}
+	// Already-recorded answers survive unchanged; old projections are repaired
+	// from their owner-scoped persisted HITL resolution without changing history.
+	for _, node := range card.Body {
+		for _, pair := range node.KV {
+			if pair[0] == "你的选择" || pair[0] == "补充说明" {
+				return card
+			}
+		}
+	}
+	ref, err := s.st.CardRef(owner, card.ID)
+	if err != nil || !strings.HasPrefix(ref, "hitl:") {
+		return card
+	}
+	resolution, err := s.st.HITLResolution(owner, strings.TrimPrefix(ref, "hitl:"))
+	if err != nil {
+		return card
+	}
+	recordAnswer(&card, "", resolution.Answer)
+	return card
+}

internal/cardsvc/resolution_test.go

@@ -0,0 +1,41 @@
+package cardsvc
+
+import (
+	"agent-system-backend/internal/store"
+	core "agent-system-core"
+	"strings"
+	"testing"
+)
+
+func TestHistoricalResolvedChoiceDisplaysPersistedAnswer(t *testing.T) {
+	st, svc, _ := openTest(t)
+	hitl := core.HITLCard{ID: "old-choice", ConversationID: "cnv_1"}
+	if err := st.SaveHITLCard(store.OwnerDefault, &hitl); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.ResolveHITLCard(store.OwnerDefault, hitl.ID, core.HITLResolvedPayload{CardID: hitl.ID, Answer: "生成摘要", Kind: "choice"}); err != nil {
+		t.Fatal(err)
+	}
+	card, err := svc.Create(store.OwnerDefault, core.ActivityCard{Kind: core.CardKindConfirm, Status: core.CardResolved, Body: []core.UINode{{Type: core.UIMarkdown, Markdown: "_可在输入框自由输入回应。_"}}}, "hitl:"+hitl.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	got, err := svc.Get(store.OwnerDefault, card.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	found := false
+	for _, node := range got.Body {
+		if strings.Contains(node.Markdown, "输入框") {
+			t.Fatal("stale input hint retained")
+		}
+		for _, pair := range node.KV {
+			if pair[1] == "生成摘要" {
+				found = true
+			}
+		}
+	}
+	if !found {
+		t.Fatal("stored choice answer missing")
+	}
+}

internal/cmdbus/account_guard_test.go

@@ -0,0 +1,169 @@
+package cmdbus
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"testing"
+
+	agentcommand "agent-command"
+)
+
+func TestEffectiveAccountGuardRejectsBeforeDispatchEffects(t *testing.T) {
+	for _, tc := range []struct {
+		name string
+		req  Request
+		err  error
+		want string
+	}{
+		{"disabled handler", Request{ID: "demo.ping", Owner: "alice", Actor: "alice"}, errors.New("disabled"), "alice"},
+		{"failed lookup", Request{ID: "demo.ping", Owner: "alice", Actor: "alice"}, errors.New("database unavailable"), "alice"},
+		{"plugin actor uses account owner", Request{ID: "demo.ping", Owner: "alice", Actor: "plugin:rdm"}, errors.New("disabled"), "alice"},
+		{"actor fallback", Request{ID: "demo.ping", Actor: "alice"}, errors.New("disabled"), "alice"},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			audit, cards := &memAudit{}, &memCards{}
+			b := newTestBus(audit, cards)
+			called := 0
+			b.SetEffectiveAccountGuard(func(_ context.Context, actor string) error {
+				called++
+				if actor != tc.want {
+					t.Fatalf("guard actor = %q, want %q", actor, tc.want)
+				}
+				return tc.err
+			})
+			resp := b.Dispatch(context.Background(), tc.req)
+			if resp.Receipt.State != agentcommand.StateRejected || !strings.Contains(resp.Receipt.Reason, "effective account") {
+				t.Fatalf("guard rejection: %+v", resp.Receipt)
+			}
+			if called != 1 || len(audit.logs) != 0 || len(cards.created) != 0 {
+				t.Fatalf("guard calls=%d audits=%d cards=%d", called, len(audit.logs), len(cards.created))
+			}
+		})
+	}
+}
+
+func TestEffectiveAccountGuardRejectsBeforePendingConfirmAndRechecks(t *testing.T) {
+	audit, cards := &memAudit{}, &memCards{}
+	b := newTestBus(audit, cards)
+	allowed := false
+	b.SetEffectiveAccountGuard(func(_ context.Context, actor string) error {
+		if actor != "alice" {
+			t.Fatalf("guard actor = %q", actor)
+		}
+		if !allowed {
+			return errors.New("disabled")
+		}
+		return nil
+	})
+	req := Request{ID: "demo.risky", Owner: "alice", Actor: "alice", ConversationID: "cnv_1", Params: map[string]any{"target": "prod"}}
+	if r := b.Dispatch(context.Background(), req); r.Receipt.State != agentcommand.StateRejected {
+		t.Fatalf("disabled dispatch: %+v", r.Receipt)
+	}
+	if len(cards.created) != 0 || len(b.pending) != 0 || len(audit.logs) != 0 {
+		t.Fatal("disabled dispatch created confirmation effects")
+	}
+	allowed = true
+	r := b.Dispatch(context.Background(), req)
+	if r.Receipt.State != agentcommand.StateAccepted || len(cards.created) != 1 || len(b.pending) != 1 {
+		t.Fatalf("enabled dispatch: %+v", r.Receipt)
+	}
+	allowed = false
+	before := len(audit.logs)
+	if r := b.Confirm("alice", "card_x1", "confirm"); r.Receipt.State != agentcommand.StateRejected {
+		t.Fatalf("disabled confirm: %+v", r.Receipt)
+	}
+	if len(b.pending) != 1 || len(audit.logs) != before {
+		t.Fatal("disabled confirm consumed pending request or wrote audit")
+	}
+	allowed = true
+	if r := b.Confirm("alice", "card_x1", "confirm"); r.Receipt.State != agentcommand.StateCommitted {
+		t.Fatalf("re-enabled confirm: %+v", r.Receipt)
+	}
+}
+
+func TestEffectiveAccountGuardStopsConfirmedHandlerAfterStateChanges(t *testing.T) {
+	b := New(&memAudit{}, &memCards{}, nil)
+	executed := 0
+	if err := b.RegisterPluginCommand(agentcommand.CommandSpec{ID: "demo.effect", Title: "Effect"}, func(context.Context, Request) (any, error) {
+		executed++
+		return "done", nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	checks := 0
+	b.SetEffectiveAccountGuard(func(_ context.Context, actor string) error {
+		checks++
+		if actor != "alice" {
+			t.Fatalf("guard actor = %q", actor)
+		}
+		if checks == 4 {
+			return errors.New("disabled after confirmation started")
+		}
+		return nil
+	})
+	// Confirm passes its own check, then Dispatch must check once more before
+	// invoking the handler. A direct confirmed request takes the same path.
+	if err := b.RegisterBuiltin(agentcommand.CommandSpec{ID: "demo.high", Title: "High", Danger: agentcommand.DangerHigh}, "", func(context.Context, Request) (any, error) {
+		executed++
+		return "done", nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	r := b.Dispatch(context.Background(), Request{ID: "demo.high", Owner: "alice", ConversationID: "cnv_1"})
+	if r.Receipt.State != agentcommand.StateAccepted {
+		t.Fatalf("initial dispatch: %+v", r.Receipt)
+	}
+	// Dispatch checks again before creating the confirmation card. Confirm's
+	// check passes; its nested Dispatch catches the fourth-state change.
+	if r := b.Confirm("alice", "card_x1", "confirm"); r.Receipt.State != agentcommand.StateRejected {
+		t.Fatalf("confirm after disable: %+v", r.Receipt)
+	}
+	if executed != 0 || len(b.pending) != 0 {
+		t.Fatalf("executed=%d pending=%d", executed, len(b.pending))
+	}
+	// Direct confirmed execution also passes through the same guard.
+	checks = 3
+	if r := b.Dispatch(context.Background(), Request{ID: "demo.effect", Owner: "alice", Confirmed: true}); r.Receipt.State != agentcommand.StateRejected || executed != 0 {
+		t.Fatalf("direct confirmed dispatch: %+v executed=%d", r.Receipt, executed)
+	}
+}
+
+type trackingPendingStore struct {
+	owner, payload string
+	takes          int
+}
+
+func (p *trackingPendingStore) SavePendingConfirm(_ string, owner, payload string) error {
+	p.owner, p.payload = owner, payload
+	return nil
+}
+func (p *trackingPendingStore) TakePendingConfirm(string) (string, string, bool, error) {
+	p.takes++
+	return p.owner, p.payload, p.payload != "", nil
+}
+
+func TestEffectiveAccountGuardDoesNotConsumeStoredPendingOnDeniedConfirm(t *testing.T) {
+	b := newTestBus(&memAudit{}, &memCards{})
+	pendingStorage := &trackingPendingStore{}
+	b.SetPendingStore(pendingStorage)
+	allowed := true
+	b.SetEffectiveAccountGuard(func(_ context.Context, actor string) error {
+		if actor != "alice" {
+			t.Fatalf("guard actor = %q", actor)
+		}
+		if !allowed {
+			return errors.New("database unavailable")
+		}
+		return nil
+	})
+	r := b.Dispatch(context.Background(), Request{ID: "demo.risky", Owner: "alice", ConversationID: "cnv_1", Params: map[string]any{"target": "prod"}})
+	if r.Receipt.State != agentcommand.StateAccepted || pendingStorage.payload == "" {
+		t.Fatalf("pending setup: %+v", r.Receipt)
+	}
+	b.pending = map[string]pending{} // force the restored path
+	allowed = false
+	if r := b.Confirm("alice", "card_x1", "confirm"); r.Receipt.State != agentcommand.StateRejected || pendingStorage.takes != 0 {
+		t.Fatalf("denied confirm: %+v takes=%d", r.Receipt, pendingStorage.takes)
+	}
+}

internal/cmdbus/account_write_fence_test.go

@@ -0,0 +1,18 @@
+package cmdbus
+
+import (
+	"context"
+	"testing"
+
+	agentcommand "agent-command"
+)
+
+func TestStrictAccountWritesRejectLegacyBusPorts(t *testing.T) {
+	audit, cards := &memAudit{}, &memCards{}
+	b := newTestBus(audit, cards)
+	b.RequireAccountCheckedWrites(false)
+	resp := b.Dispatch(context.Background(), Request{ID: "demo.risky", Owner: "alice", Actor: "alice", ConversationID: "cnv_1", Params: map[string]any{"target": "prod"}})
+	if resp.Receipt.State != agentcommand.StateUnknown || len(cards.created) != 0 || len(audit.logs) != 0 || len(b.pending) != 0 {
+		t.Fatalf("legacy port wrote under strict mode: %+v, cards=%d audit=%d pending=%d", resp.Receipt, len(cards.created), len(audit.logs), len(b.pending))
+	}
+}

internal/cmdbus/cmdbus.go

@@ -5,6 +5,7 @@ package cmdbus
 
 import (
 	"context"
+	"crypto/rand"
 	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
@@ -15,7 +16,7 @@ import (
 	"time"
 
 	agentcommand "agent-command"
-	"agent-system-core"
+	core "agent-system-core"
 )
 
 // AuditStore 审计落盘端口（store 实现；v7 建表、v18 加 owner 列）。
@@ -49,6 +50,13 @@ type CommandTool struct {
 // 不投影给该 owner 的模型。组合根按需装配（如 generative-ui 按 activation 台账）。
 type ToolGate func(owner, commandID string) bool
 
+// EffectiveAccountGuard checks the current account state before a command can
+// create a confirmation or invoke a handler. The composition root supplies the
+// check; nil keeps standalone and auth-off fixtures unchanged. The actor is
+// derived only from trusted Request identity fields, never Params. This is an
+// early check, not an atomic fence across handler databases or external calls.
+type EffectiveAccountGuard func(ctx context.Context, actor string) error
+
 // SetToolGate 装配 owner 级注入闸（组合根；启动期一次）。
 func (b *Bus) SetToolGate(g ToolGate) { b.toolGate = g }
 
@@ -89,9 +97,49 @@ type Request struct {
 	Actor           string
 	Owner           string
 	ConversationID  string
+	OperationID     string // overwritten by the trusted bus before handler execution
 	AnchorMessageID string // 确认卡锚定的发起消息（内联渲染）
 	Confirmed       bool   // 危险命令经确认卡放行后的执行
 	HostProjectID   string // EXT-18：分发所属基座项目（空＝无项目上下文）
+	// HumanGrant is set only by the authenticated session path or the human
+	// decision resolver. Client JSON and agent tool dispatch leave it nil.
+	HumanGrant *HumanGrant
+}
+
+// RequiresProjectWorkDecision identifies formal RDM writes that must be bound
+// to an analyzed committed-message manifest before dispatch. Read views and
+// the separate exact-card structure issue/decision path are excluded.
+func RequiresProjectWorkDecision(id string) bool {
+	for _, prefix := range []string{
+		"rdm.reqs.", "rdm.review.", "rdm.draft.", "rdm.cnode.", "rdm.cedge.",
+		"rdm.conclusion.", "rdm.section.", "rdm.stage.", "rdm.change.",
+	} {
+		if strings.HasPrefix(id, prefix) {
+			for _, read := range []string{"rdm.reqs.list", "rdm.reqs.exports", "rdm.reqs.underived", "rdm.review.status", "rdm.review.doc.status", "rdm.draft.proposals", "rdm.conclusion.list", "rdm.change.list"} {
+				if id == read {
+					return false
+				}
+			}
+			return true
+		}
+	}
+	switch id {
+	case "rdm.structure.propose", "rdm.structure.revise", "rdm.docs.instantiate", "rdm.docs.delivery.approve",
+		"rdm.doc.snapshot", "rdm.ingest", "rdm.upload.confirm", "rdm.knowledge.publish", "rdm.trace.confirm",
+		"rdm.conflicts.resolve":
+		return true
+	default:
+		return false
+	}
+}
+
+// HumanGrant ties this dispatch to one persisted human response.
+// It is not a secret token and is not read from command params.
+type HumanGrant struct {
+	CardID   string
+	ProofID  string
+	Actor    string
+	Decision string
 }
 
 // Response 分发结果：回执 + 处理负载 + 可能的确认卡。
@@ -108,17 +156,25 @@ type pending struct {
 }
 
 type Bus struct {
-	reg          *agentcommand.Registry
-	audit        AuditStore
-	cards        CardPort
-	now          func() time.Time
-	handlers     map[string]Handler
-	slash        map[string]string // "/x" → command id
-	pendMu       sync.Mutex
-	pending      map[string]pending
-	pendingStore PendingStore
-	intents      *IntentStore // G2-2：意图声明表（自然语言路由）
-	toolGate     ToolGate     // U3：owner 级工具注入闸（nil = 不过滤）
+	reg                  *agentcommand.Registry
+	audit                AuditStore
+	cards                CardPort
+	now                  func() time.Time
+	handlers             map[string]Handler
+	slash                map[string]string // "/x" → command id
+	pendMu               sync.Mutex
+	pending              map[string]pending
+	pendingStore         PendingStore
+	intents              *IntentStore          // G2-2：意图声明表（自然语言路由）
+	toolGate             ToolGate              // U3：owner 级工具注入闸（nil = 不过滤）
+	accountGuard         EffectiveAccountGuard // A1: optional command execution precheck
+	strictAccountWrites  bool
+	allowImplicitLocal   bool
+	projectWorkPreflight func(context.Context, Request) error
+}
+
+func (b *Bus) SetProjectWorkPreflight(fn func(context.Context, Request) error) {
+	b.projectWorkPreflight = fn
 }
 
 // PendingStore 把危险命令的确认挂起态落盘。进程内 map 仍是热路径；重启后从存储取回。
@@ -144,6 +200,70 @@ func (b *Bus) Registry() *agentcommand.Registry { return b.reg }
 // SetPendingStore 注入确认挂起态的持久化实现（nil = 仅进程内）。
 func (b *Bus) SetPendingStore(st PendingStore) { b.pendingStore = st }
 
+// SetEffectiveAccountGuard installs the composition-root check at startup.
+// Handler Store writes still need their own final transaction fence.
+func (b *Bus) SetEffectiveAccountGuard(g EffectiveAccountGuard) { b.accountGuard = g }
+
+// RequireAccountCheckedWrites makes every Bus-owned durable sink use a final
+// account transaction. The composition root enables this after wiring Store
+// and Cards; standalone in-memory fixtures retain their legacy ports.
+func (b *Bus) RequireAccountCheckedWrites(allowImplicitLocal bool) {
+	b.strictAccountWrites = true
+	b.allowImplicitLocal = allowImplicitLocal
+}
+
+func (b *Bus) createConfirmCard(actor string, card core.ActivityCard, ref string) (core.ActivityCard, error) {
+	if !b.strictAccountWrites {
+		return b.cards.Create(actor, card, ref)
+	}
+	checked, ok := b.cards.(interface {
+		CreateAccountChecked(string, core.ActivityCard, string, bool) (core.ActivityCard, error)
+	})
+	if !ok {
+		return core.ActivityCard{}, fmt.Errorf("cmdbus: account-checked card port required")
+	}
+	return checked.CreateAccountChecked(actor, card, ref, b.allowImplicitLocal)
+}
+
+func (b *Bus) setConfirmCardStatus(actor, id string, status core.CardStatus, tone, note string) (core.ActivityCard, error) {
+	if !b.strictAccountWrites {
+		return b.cards.SetStatus(actor, id, status, tone, note)
+	}
+	checked, ok := b.cards.(interface {
+		SetStatusAccountChecked(string, string, core.CardStatus, string, string, bool) (core.ActivityCard, error)
+	})
+	if !ok {
+		return core.ActivityCard{}, fmt.Errorf("cmdbus: account-checked card port required")
+	}
+	return checked.SetStatusAccountChecked(actor, id, status, tone, note, b.allowImplicitLocal)
+}
+
+func (b *Bus) savePending(cardID, owner, payload string) error {
+	if !b.strictAccountWrites {
+		return b.pendingStore.SavePendingConfirm(cardID, owner, payload)
+	}
+	checked, ok := b.pendingStore.(interface {
+		SavePendingConfirmAccountChecked(string, string, string, bool) error
+	})
+	if !ok {
+		return fmt.Errorf("cmdbus: account-checked pending store required")
+	}
+	return checked.SavePendingConfirmAccountChecked(cardID, owner, payload, b.allowImplicitLocal)
+}
+
+func (b *Bus) takePending(cardID, owner string) (string, string, bool, error) {
+	if !b.strictAccountWrites {
+		return b.pendingStore.TakePendingConfirm(cardID)
+	}
+	checked, ok := b.pendingStore.(interface {
+		TakePendingConfirmAccountChecked(string, string, bool) (string, string, bool, error)
+	})
+	if !ok {
+		return "", "", false, fmt.Errorf("cmdbus: account-checked pending store required")
+	}
+	return checked.TakePendingConfirmAccountChecked(cardID, owner, b.allowImplicitLocal)
+}
+
 // RegisterBuiltin 登记内置命令并绑定宿主处理器与 `/` 别名。
 func (b *Bus) RegisterBuiltin(spec agentcommand.CommandSpec, slash string, h Handler) error {
 	spec.Binding = agentcommand.Binding{Kind: agentcommand.BindBuiltin}
@@ -242,10 +362,16 @@ func (b *Bus) HasCommand(id string) bool {
 // List 四入口共享的命令清单（`/` 菜单、按钮、卡片 action 提示用）。
 func (b *Bus) List() []agentcommand.Registered { return b.reg.List() }
 
-// Dispatch 统一分发：校验→危险收口→执行→审计。任何路径都产出回执与审计（入口对称）。
+// Dispatch 统一分发：账号预检→校验→危险收口→执行→审计。账号预检拒绝只返回回执，
+// 避免停用账号或检查故障时继续写入审计；其余路径维持四入口审计对称。
 func (b *Bus) Dispatch(ctx context.Context, req Request) Response {
 	start := b.now()
 	req.Entrance = agentcommand.CanonicalEntrance(req.Entrance)
+	if err := b.checkEffectiveAccount(ctx, accountActor(req)); err != nil {
+		// A rejected account cannot create a card, pending row, audit row, or
+		// invoke a handler. A failed read is also a denial.
+		return b.accountRejected(req.ID, start)
+	}
 	receipt := func(state agentcommand.ResultState, op, reason string) Response {
 		return Response{Receipt: b.auditReceipt(req, state, op, reason, start)}
 	}
@@ -256,22 +382,37 @@ func (b *Bus) Dispatch(ctx context.Context, req Request) Response {
 	if err := validateParams(spec.ParamsSchema, req.Params); err != nil {
 		return receipt(agentcommand.StateRejected, "", "params: "+err.Error())
 	}
+	if RequiresProjectWorkDecision(req.ID) {
+		if b.projectWorkPreflight == nil {
+			return receipt(agentcommand.StateRejected, "", "project source preflight unavailable")
+		}
+		if err := b.projectWorkPreflight(ctx, req); err != nil {
+			return receipt(agentcommand.StateRejected, "", "project source preflight: "+err.Error())
+		}
+	}
 	// 高危收口：非确认入口先落内联确认卡（committed 语义 = 卡已创建；确认后二次分发执行）。
 	if spec.Danger == agentcommand.DangerHigh && !req.Confirmed {
 		if b.cards == nil || req.ConversationID == "" {
 			return receipt(agentcommand.StateRejected, "", "high-danger command requires conversation context for inline confirm")
 		}
-		card, err := b.cards.Create(req.Owner, confirmCard(spec, req), "cmd:"+spec.ID)
+		if err := b.checkEffectiveAccount(ctx, accountActor(req)); err != nil {
+			return b.accountRejected(req.ID, start)
+		}
+		card, err := b.createConfirmCard(accountActor(req), confirmCard(spec, req), "cmd:"+spec.ID)
 		if err != nil {
 			return receipt(agentcommand.StateUnknown, "", "confirm card: "+err.Error())
 		}
+		if b.pendingStore != nil {
+			raw, _ := json.Marshal(req)
+			if err := b.savePending(card.ID, accountActor(req), string(raw)); err != nil {
+				return receipt(agentcommand.StateUnknown, "", "confirm pending: "+err.Error())
+			}
+		} else if b.strictAccountWrites {
+			return receipt(agentcommand.StateUnknown, "", "confirm pending: account-checked store required")
+		}
 		b.pendMu.Lock()
 		b.pending[card.ID] = pending{req: req, cardID: card.ID}
 		b.pendMu.Unlock()
-		if b.pendingStore != nil {
-			raw, _ := json.Marshal(req)
-			_ = b.pendingStore.SavePendingConfirm(card.ID, req.Owner, string(raw))
-		}
 		r := b.auditReceipt(req, agentcommand.StateAccepted, card.ID, "awaiting explicit confirm", start)
 		return Response{Receipt: r, Card: &card}
 	}
@@ -279,59 +420,118 @@ func (b *Bus) Dispatch(ctx context.Context, req Request) Response {
 	if !ok {
 		return receipt(agentcommand.StateRejected, "", "no host handler bound for "+req.ID)
 	}
+	if err := b.checkEffectiveAccount(ctx, accountActor(req)); err != nil {
+		return b.accountRejected(req.ID, start)
+	}
+	// The domain handler can persist this trusted ID with its transaction/outbox.
+	// Entropy, not the clock or caller Params, distinguishes concurrent operations.
+	// A handler failure still writes only a rejected audit receipt without an ID.
+	var opBytes [24]byte
+	if _, err := rand.Read(opBytes[:]); err != nil {
+		return receipt(agentcommand.StateUnknown, "", "operation ID unavailable")
+	}
+	req.OperationID = "op_" + hex.EncodeToString(opBytes[:])
 	payload, err := h(ctx, req)
 	if err != nil {
 		return receipt(agentcommand.StateRejected, "", "rejected: "+err.Error())
 	}
-	op := fmt.Sprintf("op_%s_%d", strings.ReplaceAll(strings.TrimPrefix(req.ID, ""), ".", "_"), b.now().UnixNano())
-	return Response{Receipt: b.auditReceipt(req, agentcommand.StateCommitted, op, "", start), Payload: payload}
+	return Response{Receipt: b.auditReceipt(req, agentcommand.StateCommitted, req.OperationID, "", start), Payload: payload}
 }
 
 // Confirm 确认卡回道：actionID=confirm 执行挂起请求（entrance 归一 card），其余视为取消。
 func (b *Bus) Confirm(owner, cardID, actionID string) Response {
+	return b.ConfirmContext(context.Background(), owner, cardID, actionID)
+}
+
+// ConfirmContext carries the request cancellation through the confirmed
+// handler and repeats the account check before consuming durable state.
+func (b *Bus) ConfirmContext(ctx context.Context, owner, cardID, actionID string) Response {
+	// The caller supplies the authenticated card owner. Check before even
+	// consuming a persisted pending request; Dispatch checks the stored
+	// request again immediately before executing its handler.
+	if err := b.checkEffectiveAccount(ctx, owner); err != nil {
+		return b.accountRejected("unknown", b.now())
+	}
 	b.pendMu.Lock()
 	p, ok := b.pending[cardID]
-	if ok && actionID == "confirm" {
-		delete(b.pending, cardID)
-	}
 	b.pendMu.Unlock()
-	if ok && actionID == "confirm" && b.pendingStore != nil {
-		_, _, _, _ = b.pendingStore.TakePendingConfirm(cardID)
+	if ok && p.req.Owner != "" && p.req.Owner != owner {
+		return Response{Receipt: agentcommand.ExecReceipt{CommandID: p.req.ID, State: agentcommand.StateRejected, Reason: "confirm owner mismatch", Time: b.now().UTC()}}
 	}
-	if !ok && b.pendingStore != nil {
-		_, payload, found, err := b.pendingStore.TakePendingConfirm(cardID)
-		if err == nil && found {
-			var req Request
-			if json.Unmarshal([]byte(payload), &req) == nil {
-				p = pending{req: req, cardID: cardID}
-				ok = true
-			}
+	if b.pendingStore != nil {
+		storedOwner, payload, found, err := b.takePending(cardID, owner)
+		if err != nil {
+			return b.accountRejected("unknown", b.now())
 		}
+		if found {
+			var req Request
+			if storedOwner != owner || json.Unmarshal([]byte(payload), &req) != nil {
+				return Response{Receipt: agentcommand.ExecReceipt{CommandID: "unknown", State: agentcommand.StateRejected, Reason: "invalid pending confirm", Time: b.now().UTC()}}
+			}
+			p = pending{req: req, cardID: cardID}
+			ok = true
+		} else if b.strictAccountWrites {
+			ok = false
+		}
+	} else if b.strictAccountWrites {
+		ok = false
 	}
 	if !ok {
 		return Response{Receipt: agentcommand.ExecReceipt{CommandID: "unknown", State: agentcommand.StateRejected, Reason: "no pending confirm (expired or already resolved)", Time: b.now().UTC()}}
 	}
 	req := p.req
+	if req.Owner != "" && req.Owner != owner {
+		return Response{Receipt: agentcommand.ExecReceipt{CommandID: req.ID, State: agentcommand.StateRejected, Reason: "confirm owner mismatch", Time: b.now().UTC()}}
+	}
+	b.pendMu.Lock()
+	delete(b.pending, cardID)
+	b.pendMu.Unlock()
 	req.Confirmed = true
 	req.Entrance = "card"
 	if actionID != "confirm" {
 		if b.cards != nil {
-			_, _ = b.cards.SetStatus(owner, cardID, core.CardResolved, "muted", "cancelled")
+			_, _ = b.setConfirmCardStatus(owner, cardID, core.CardResolved, "muted", "cancelled")
 		}
 		start := b.now()
 		return Response{Receipt: b.auditReceipt(req, agentcommand.StateRejected, "", "cancelled at confirm card", start)}
 	}
-	resp := b.Dispatch(context.Background(), req)
+	resp := b.Dispatch(ctx, req)
 	if b.cards != nil {
 		if resp.Receipt.State == agentcommand.StateCommitted {
-			_, _ = b.cards.SetStatus(owner, cardID, core.CardResolved, "ok", "confirmed")
+			_, _ = b.setConfirmCardStatus(owner, cardID, core.CardResolved, "ok", "confirmed")
 		} else {
-			_, _ = b.cards.SetStatus(owner, cardID, core.CardFailed, "danger", resp.Receipt.Reason)
+			_, _ = b.setConfirmCardStatus(owner, cardID, core.CardFailed, "danger", resp.Receipt.Reason)
 		}
 	}
 	return resp
 }
 
+func accountActor(req Request) string {
+	// Plugin and delegated commands use Actor for an audit label such as a
+	// plugin ID; Owner is the effective account whose state controls effects.
+	if req.Owner != "" {
+		return req.Owner
+	}
+	return req.Actor
+}
+
+func (b *Bus) checkEffectiveAccount(ctx context.Context, actor string) error {
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	if b.accountGuard == nil {
+		return nil
+	}
+	return b.accountGuard(ctx, actor)
+}
+
+func (b *Bus) accountRejected(commandID string, start time.Time) Response {
+	return Response{Receipt: agentcommand.ExecReceipt{
+		CommandID: commandID, State: agentcommand.StateRejected,
+		Reason: "effective account unavailable", Time: start.UTC(),
+	}}
+}
+
 func (b *Bus) auditReceipt(req Request, state agentcommand.ResultState, op, reason string, start time.Time) agentcommand.ExecReceipt {
 	env := agentcommand.AuditEnvelope{
 		Time: start.UTC(), Actor: req.Actor, CommandID: req.ID, Entrance: agentcommand.CanonicalEntrance(req.Entrance),
@@ -341,7 +541,20 @@ func (b *Bus) auditReceipt(req Request, state agentcommand.ResultState, op, reas
 	if _, src, err := b.reg.Resolve(req.ID); err == nil {
 		env.Source = src
 	}
-	if err := b.audit.AppendAudit(req.Owner, env); err != nil {
+	var err error
+	if b.strictAccountWrites {
+		checked, ok := b.audit.(interface {
+			AppendAuditAccountChecked(string, agentcommand.AuditEnvelope, bool) error
+		})
+		if !ok {
+			err = fmt.Errorf("cmdbus: account-checked audit store required")
+		} else {
+			err = checked.AppendAuditAccountChecked(accountActor(req), env, b.allowImplicitLocal)
+		}
+	} else {
+		err = b.audit.AppendAudit(req.Owner, env)
+	}
+	if err != nil {
 		// 审计不可用：结果标记未知，不臆断成功（四态语义）。
 		return agentcommand.ExecReceipt{CommandID: req.ID, State: agentcommand.StateUnknown, Reason: "audit unavailable: " + err.Error(), Time: b.now().UTC()}
 	}

internal/cmdbus/cmdbus_test.go

@@ -62,6 +62,7 @@ func newTestBus(a AuditStore, c CardPort) *Bus {
 func TestDispatchFourEntrancesSameAudit(t *testing.T) {
 	a := &memAudit{}
 	b := newTestBus(a, &memCards{})
+	b.SetProjectWorkPreflight(func(context.Context, Request) error { return nil })
 	for _, ent := range []string{"button", "slash", "chat", "card", "api", "weird-unknown"} {
 		resp := b.Dispatch(context.Background(), Request{ID: "demo.ping", Entrance: ent})
 		if resp.Receipt.State != agentcommand.StateCommitted {
@@ -87,6 +88,66 @@ func TestDispatchFourEntrancesSameAudit(t *testing.T) {
 	}
 }
 
+func TestHandlerReceivesCommittedOperationIDBeforeDomainWrite(t *testing.T) {
+	audit := &memAudit{}
+	bus := New(audit, nil, func() time.Time { return time.Unix(1700000000, 123).UTC() })
+	var seen string
+	if err := bus.RegisterBuiltin(agentcommand.CommandSpec{ID: "rdm.confirm", Title: "Confirm"}, "", func(_ context.Context, req Request) (any, error) {
+		seen = req.OperationID
+		return "committed-domain-event", nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	resp := bus.Dispatch(context.Background(), Request{ID: "rdm.confirm", Actor: "alice", Owner: "alice", Params: map[string]any{"operationId": "forged-client-id"}})
+	if seen == "" || seen == "forged-client-id" || resp.Receipt.OperationID != seen || len(audit.logs) != 1 || audit.logs[0].OperationID != seen {
+		t.Fatalf("operation correlation missing: handler=%q receipt=%+v audit=%+v", seen, resp.Receipt, audit.logs)
+	}
+	if err := bus.RegisterBuiltin(agentcommand.CommandSpec{ID: "rdm.fail", Title: "Fail"}, "", func(_ context.Context, req Request) (any, error) {
+		if req.OperationID == "" {
+			t.Fatal("handler must receive a tentative host operation ID")
+		}
+		return nil, errors.New("domain transaction rejected")
+	}); err != nil {
+		t.Fatal(err)
+	}
+	failed := bus.Dispatch(context.Background(), Request{ID: "rdm.fail", Actor: "alice", Owner: "alice"})
+	if failed.Receipt.State != agentcommand.StateRejected || failed.Receipt.OperationID != "" || len(audit.logs) != 2 || audit.logs[1].OperationID != "" {
+		t.Fatalf("failed handler was marked committed: %+v audits=%+v", failed.Receipt, audit.logs)
+	}
+}
+
+func TestOperationIDsRemainUniqueWithFixedClockAndConcurrentDispatch(t *testing.T) {
+	audit := &memAudit{}
+	bus := New(audit, nil, func() time.Time { return time.Unix(1700000000, 123).UTC() })
+	if err := bus.RegisterBuiltin(agentcommand.CommandSpec{ID: "rdm.confirm", Title: "Confirm"}, "", func(_ context.Context, req Request) (any, error) {
+		return req.OperationID, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	const count = 64
+	var wg sync.WaitGroup
+	ids := make([]string, count)
+	for i := range ids {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+			resp := bus.Dispatch(context.Background(), Request{ID: "rdm.confirm", Actor: "alice", Owner: "alice"})
+			ids[i] = resp.Receipt.OperationID
+		}(i)
+	}
+	wg.Wait()
+	seen := map[string]bool{}
+	for _, id := range ids {
+		if id == "" || seen[id] {
+			t.Fatalf("fixed clock produced a missing or duplicate trusted operation ID: %q", id)
+		}
+		seen[id] = true
+	}
+	if len(audit.logs) != count {
+		t.Fatalf("audit rows=%d want=%d", len(audit.logs), count)
+	}
+}
+
 func TestDispatchUnknownAndBadParams(t *testing.T) {
 	a := &memAudit{}
 	b := newTestBus(a, &memCards{})
@@ -217,6 +278,7 @@ func TestValidateParamsScalars(t *testing.T) {
 func TestRegisterPluginCommandDispatch(t *testing.T) {
 	a := &memAudit{}
 	b := newTestBus(a, &memCards{})
+	b.SetProjectWorkPreflight(func(context.Context, Request) error { return nil })
 	err := b.RegisterPluginCommand(agentcommand.CommandSpec{ID: "rdm.ingest", Title: "入库"}, func(ctx context.Context, req Request) (any, error) {
 		return map[string]any{"echo": req.Params["ref"], "owner": req.Owner}, nil
 	})

internal/cmdbus/project_work_command_test.go

@@ -0,0 +1,16 @@
+package cmdbus
+
+import "testing"
+
+func TestFormalRDMWritesRequireProjectWorkDecision(t *testing.T) {
+	for _, id := range []string{"rdm.reqs.add", "rdm.docs.instantiate", "rdm.docs.delivery.approve", "rdm.doc.snapshot", "rdm.conflicts.resolve", "rdm.review.doc.approve", "rdm.structure.propose", "rdm.trace.confirm"} {
+		if !RequiresProjectWorkDecision(id) {
+			t.Errorf("formal write %s bypassed project source preflight", id)
+		}
+	}
+	for _, id := range []string{"rdm.inspect.tree", "rdm.reqs.list", "rdm.structure.proposals", "rdm.structure.issue", "rdm.structure.decide"} {
+		if RequiresProjectWorkDecision(id) {
+			t.Errorf("read or separately proven command %s was misclassified", id)
+		}
+	}
+}

internal/cmdbus/slash_intent_test.go

@@ -67,6 +67,7 @@ func TestIntentDeclareMatchRoute(t *testing.T) {
 		t.Fatalf("匹配 = %+v ok=%v", in, ok)
 	}
 	// 路由：匹配到的命令经总线 chat 入口分发成功。
+	bus.SetProjectWorkPreflight(func(context.Context, Request) error { return nil })
 	resp := bus.Dispatch(context.Background(), Request{ID: in.Command, Params: in.Params, Entrance: "chat", Owner: "alice"})
 	if resp.Receipt.State != "committed" {
 		t.Fatalf("路由分发 = %+v", resp.Receipt)

internal/config/config.go

@@ -36,6 +36,8 @@ type Config struct {
 	ExecDepsDir string `json:"execDepsDir"`
 	// ExecWorkspace sandbox 档工作区模式：空=直写；overlay=冻结基底+upper。
 	ExecWorkspace string `json:"execWorkspace"`
+	// ExecEnvRoot 分层 Python 环境根。空 = 不启用申请代理。
+	ExecEnvRoot string `json:"execEnvRoot"`
 	// Tier 部署档（协作存储方案 KTD1）：空=auto（DSN→PG，否则 SQLite）；
 	// local=强制 SQLite（不允许 DSN）；team=强制 PG（缺 DSN/未开认证拒绝启动，
 	// PG 故障拒绝就绪，绝不回落 SQLite）。
@@ -69,6 +71,7 @@ var envKey = map[string]string{
 	"execBackend":          "AGENT_SYSTEM_EXEC_BACKEND",
 	"execDepsDir":          "AGENT_SYSTEM_EXEC_DEPS_DIR",
 	"execWorkspace":        "AGENT_SYSTEM_EXEC_WORKSPACE",
+	"execEnvRoot":          "AGENT_SYSTEM_EXEC_ENV_ROOT",
 	"insecureListen":       "AGENT_SYSTEM_INSECURE_LISTEN",
 	"allowedHosts":         "AGENT_SYSTEM_ALLOWED_HOSTS",
 	"disableExecTools":     "AGENT_SYSTEM_DISABLE_EXEC_TOOLS",
@@ -213,6 +216,8 @@ func loadFile(path string) (Config, map[string]bool, error) {
 			dst = &c.ExecDepsDir
 		case "execWorkspace":
 			dst = &c.ExecWorkspace
+		case "execEnvRoot":
+			dst = &c.ExecEnvRoot
 		case "tier":
 			dst = &c.Tier
 		case "pgMaxOpen":
@@ -260,6 +265,8 @@ func stringField(c Config, f string) string {
 		return c.ExecDepsDir
 	case "execWorkspace":
 		return c.ExecWorkspace
+	case "execEnvRoot":
+		return c.ExecEnvRoot
 	case "tier":
 		return c.Tier
 	}
@@ -355,6 +362,8 @@ func setString(c *Config, f, v string) {
 		c.ExecDepsDir = v
 	case "execWorkspace":
 		c.ExecWorkspace = v
+	case "execEnvRoot":
+		c.ExecEnvRoot = v
 	case "tier":
 		c.Tier = v
 	}
@@ -386,7 +395,7 @@ func (r Resolved) Explain(w io.Writer, file string) {
 		fmt.Fprintln(w, "config file: (none)")
 	}
 	fmt.Fprintln(w, "field            value                                                    source")
-	for _, f := range []string{"addr", "data", "plugins", "dsn", "artifacts", "auth", "mock", "instance", "insecureListen", "allowedHosts", "disableExecTools", "execBackend", "tier", "pgMaxOpen", "pgMaxIdle", "pgConnMaxIdleSec", "pgConnMaxLifetimeSec", "pgQueryTimeoutSec"} {
+	for _, f := range []string{"addr", "data", "plugins", "dsn", "artifacts", "auth", "mock", "instance", "insecureListen", "allowedHosts", "disableExecTools", "execBackend", "execDepsDir", "execWorkspace", "execEnvRoot", "tier", "pgMaxOpen", "pgMaxIdle", "pgConnMaxIdleSec", "pgConnMaxLifetimeSec", "pgQueryTimeoutSec"} {
 		var v string
 		if isBoolField(f) {
 			v = fmt.Sprintf("%t", boolField(r.Config, f))

internal/ctxasm/ctxasm.go

@@ -4,12 +4,14 @@ package ctxasm
 import (
 	"encoding/json"
 	"fmt"
+	"path/filepath"
 	"regexp"
 	"strings"
 	"time"
 	"unicode/utf8"
 
 	agentllm "agent-native/runtime/llm"
+	"agent-system-backend/internal/vision"
 	core "agent-system-core"
 )
 
@@ -134,6 +136,7 @@ func AssembleInput(prof core.AgentProfile, eff core.EffectiveSettings, history [
 // 此处与整段组装共用同一实现，保证两条路径的当前轮语义一致。
 func BuildCurrentUser(eff core.EffectiveSettings, currentUser core.Message, attachments []core.ParsedDocument, knowledge []core.RetrievalHit, rep *Report) agentllm.Message {
 	var sb strings.Builder
+	var images []agentllm.Image
 	for _, p := range currentUser.Parts {
 		if p.Type == core.PartText {
 			sb.WriteString(p.Text)
@@ -146,6 +149,22 @@ func BuildCurrentUser(eff core.EffectiveSettings, currentUser core.Message, atta
 		}
 		sb.WriteString("\n\n[附件]（用户上传文档的解析全文，按原文顺序保留标题/列表/表格；超长时文末标注截断。请依据文档内容完成任务，输出完整不省略）\n")
 		for _, doc := range attachments {
+			if pics := vision.ImagesFromDoc(doc); len(pics) > 0 {
+				kept, notes := vision.Admit(images, pics)
+				images = append(images, kept...)
+				if len(kept) > 0 {
+					fmt.Fprintf(&sb, "### %s\n[图片 %s，图像已随本消息发送]\n", doc.Meta.Filename, doc.Meta.Filename)
+				} else {
+					fmt.Fprintf(&sb, "### %s\n[图片 %s，本轮未发送图像]\n", doc.Meta.Filename, doc.Meta.Filename)
+				}
+				for _, note := range notes {
+					fmt.Fprintf(&sb, "%s\n", note)
+					if rep != nil {
+						rep.Truncations = append(rep.Truncations, fmt.Sprintf("附件 %s：%s", doc.Meta.Filename, note))
+					}
+				}
+				continue
+			}
 			text := doc.PlainText()
 			if runes := []rune(text); len(runes) > limit {
 				text = string(runes[:limit]) + "…（附件超长截断）"
@@ -168,7 +187,7 @@ func BuildCurrentUser(eff core.EffectiveSettings, currentUser core.Message, atta
 			rep.Items = append(rep.Items, fmt.Sprintf("knowledge(%d)", len(knowledge)))
 		}
 	}
-	return agentllm.Message{Role: agentllm.RoleUser, Content: sb.String()}
+	return agentllm.Message{Role: agentllm.RoleUser, Content: sb.String(), Images: images}
 }
 
 // maxToolArgRunes 是回放进模型的单次工具参数上限。超限时截断字符串值，保持合法 JSON。
@@ -435,6 +454,10 @@ func renderArtifactRef(a *core.ArtifactRef, resolve ArtifactResolver, limit int,
 	if a == nil {
 		return ""
 	}
+	name := a.Name
+	if isImageArtifact(a.Kind, name) {
+		return fmt.Sprintf("此前上传的图片：%s。\n", name)
+	}
 	if resolve == nil {
 		return fmt.Sprintf("此前已生成文件：%s。\n", a.Name)
 	}
@@ -454,6 +477,18 @@ func renderArtifactRef(a *core.ArtifactRef, resolve ArtifactResolver, limit int,
 	return fmt.Sprintf("此前已生成文件 %s，内容如下：\n%s\n", art.Name, text)
 }
 
+func isImageArtifact(kind, name string) bool {
+	if kind == "image" {
+		return true
+	}
+	switch strings.ToLower(filepath.Ext(name)) {
+	case ".png", ".jpg", ".jpeg", ".gif", ".webp", ".bmp", ".svg":
+		return true
+	default:
+		return false
+	}
+}
+
 // extractiveSummary 把窗口外历史压成短摘要（不调用模型）。summarizeBeyond 打开时注入。
 func extractiveSummary(dropped []core.Message) string {
 	var lines []string

internal/ctxasm/ctxasm_test.go

@@ -203,3 +203,47 @@ func contains(items []string, want string) bool {
 	}
 	return false
 }
+
+func TestCurrentImageAttachmentAndHistoryPlaceholder(t *testing.T) {
+	png := []byte{
+		0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52,
+		0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x02, 0x00, 0x00, 0x00, 0x90, 0x77, 0x53,
+		0xde, 0x00, 0x00, 0x00, 0x0c, 0x49, 0x44, 0x41, 0x54, 0x08, 0xd7, 0x63, 0xf8, 0xcf, 0xc0, 0x50,
+		0x0f, 0x00, 0x04, 0x85, 0x01, 0x80, 0x84, 0xa9, 0x8c, 0x21, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45,
+		0x4e, 0x44, 0xae, 0x42, 0x60, 0x82,
+	}
+	doc := core.ParsedDocument{
+		Meta: core.DocMeta{Filename: "chart.png", MIME: "image/png"},
+		Blocks: []core.DocBlock{{
+			Type: core.BlockImageRef,
+			Ref:  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==",
+		}},
+	}
+	msg := BuildCurrentUser(core.EffectiveSettings{}, fakeUser("看图"), []core.ParsedDocument{doc}, nil, &Report{})
+	if len(msg.Images) != 1 || msg.Images[0].MIME != "image/png" || msg.Images[0].Data == "" {
+		t.Fatalf("images %+v", msg.Images)
+	}
+	if !strings.Contains(msg.Content, "图像已随本消息发送") || strings.Contains(msg.Content, string(png)) {
+		t.Fatalf("content %q", msg.Content)
+	}
+
+	prev := core.Message{ID: "old", Role: core.RoleUser, Parts: []core.Part{
+		{Type: core.PartText, Text: "上一张"},
+		{Type: core.PartArtifactRef, Artifact: &core.ArtifactRef{ArtifactID: "a1", Name: "chart.png", Kind: "image"}},
+	}}
+	msgs, _ := AssembleInput(core.AgentProfile{}, core.EffectiveSettings{}, []core.Message{prev}, fakeUser("继续"), nil, nil, nil, nil, nil, func(core.ID) (core.Artifact, []byte, bool) {
+		return core.Artifact{Name: "chart.png", MIME: "image/png"}, png, true
+	}, AssembleOptions{})
+	var hist string
+	for _, m := range msgs {
+		if strings.Contains(m.Content, "上一张") {
+			hist = m.Content
+			if len(m.Images) != 0 {
+				t.Fatal("history must not resend image bytes")
+			}
+		}
+	}
+	if !strings.Contains(hist, "此前上传的图片：chart.png") {
+		t.Fatalf("history placeholder missing: %q", hist)
+	}
+}

internal/docgen/comparison.go

@@ -0,0 +1,814 @@
+package docgen
+
+import (
+	"archive/zip"
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+
+	"agent-document-renderer/model"
+)
+
+const (
+	comparisonExceptionTitle     = "RDR-T10-CMP-001"
+	comparisonExceptionCorporate = "RDR-T10-CMP-002"
+	comparisonExceptionAnchors   = "RDR-T10-CMP-003"
+	comparisonExceptionSafeLinks = "RDR-T10-CMP-004"
+)
+
+type comparisonBlock struct {
+	Kind  string     `json:"kind"`
+	Level int        `json:"level,omitempty"`
+	Text  []string   `json:"text,omitempty"`
+	Rows  [][]string `json:"rows,omitempty"`
+}
+
+type comparisonList struct {
+	Depth   int                  `json:"depth"`
+	Ordered bool                 `json:"ordered"`
+	Start   int                  `json:"start,omitempty"`
+	Items   []comparisonListItem `json:"items"`
+}
+
+type comparisonListItem struct {
+	Text    string `json:"text"`
+	Checked string `json:"checked,omitempty"`
+}
+
+type comparisonTask struct {
+	Text    string `json:"text"`
+	Checked string `json:"checked"`
+}
+
+type comparisonSemantics struct {
+	Lists           []comparisonList `json:"lists"`
+	Tasks           []comparisonTask `json:"tasks"`
+	ThematicBreaks  int              `json:"thematicBreaks"`
+	TableAlignments [][][]string     `json:"tableAlignments"`
+}
+
+type docxNumbering struct {
+	Level  int    `json:"level"`
+	Format string `json:"format"`
+	Start  int    `json:"start"`
+}
+
+type docxComparison struct {
+	Paragraphs      []string          `json:"paragraphs"`
+	TOC             []string          `json:"toc"`
+	PageSize        map[string]string `json:"pageSize"`
+	Margins         map[string]string `json:"margins"`
+	Headers         int               `json:"headers"`
+	Footers         int               `json:"footers"`
+	Bookmarks       int               `json:"bookmarks"`
+	ExternalLinks   int               `json:"externalLinks"`
+	ForbiddenObject bool              `json:"forbiddenObject"`
+	Semantics       map[string]bool   `json:"semantics"`
+	Numbering       []docxNumbering   `json:"numbering"`
+	Tasks           []comparisonTask  `json:"tasks"`
+	ThematicRules   int               `json:"thematicRules"`
+	TableAlignments [][][]string      `json:"tableAlignments"`
+}
+
+func compareLegacyAndShared(title string, source []byte, canonical model.CanonicalDocument, legacy, shared []byte) ComparisonReceipt {
+	receipt := ComparisonReceipt{Enabled: true, LegacySHA256: digestBytes(legacy), SharedSHA256: digestBytes(shared)}
+	legacyStructure := legacyComparisonStructure(string(source))
+	sharedStructure := canonicalComparisonStructure(canonical)
+	receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("canonical-structure", legacyStructure, sharedStructure, ""))
+	legacySemantics := sourceComparisonSemantics(string(source))
+	sharedSemantics := canonicalComparisonSemantics(canonical)
+	receipt.Dimensions = append(receipt.Dimensions,
+		compareExactDimension("list-structure", legacySemantics.Lists, sharedSemantics.Lists, ""),
+		compareExactDimension("task-state", legacySemantics.Tasks, sharedSemantics.Tasks, ""),
+		compareExactDimension("thematic-break", legacySemantics.ThematicBreaks, sharedSemantics.ThematicBreaks, ""),
+		compareExactDimension("table-alignment", legacySemantics.TableAlignments, sharedSemantics.TableAlignments, ""),
+	)
+
+	legacyDOCX, legacyErr := inspectComparisonDOCX(legacy)
+	sharedDOCX, sharedErr := inspectComparisonDOCX(shared)
+	if legacyErr != nil || sharedErr != nil {
+		detail := fmt.Sprintf("legacy=%v shared=%v", legacyErr, sharedErr)
+		for _, name := range []string{
+			"visible-text", "table-of-contents", "page-layout", "header-footer", "node-bookmarks", "safe-links", "security-objects", "word-semantics",
+			"word-numbering", "word-task-state", "word-thematic-rule", "word-table-alignment",
+		} {
+			receipt.Dimensions = append(receipt.Dimensions, ComparisonDimension{Name: name, Status: "unassessed", Detail: detail})
+		}
+		return finishComparison(receipt)
+	}
+
+	legacyParagraphs := append([]string(nil), legacyDOCX.Paragraphs...)
+	if len(legacyParagraphs) >= 2 && legacyParagraphs[0] == normalizeComparisonText(title) && legacyParagraphs[1] == normalizeComparisonText(title) {
+		withoutDuplicate := append([]string(nil), legacyParagraphs[1:]...)
+		if equalJSON(withoutDuplicate, sharedDOCX.Paragraphs) {
+			receipt.Dimensions = append(receipt.Dimensions, intentionalDimension("visible-text", legacyParagraphs, sharedDOCX.Paragraphs,
+				comparisonExceptionTitle, "legacy synthetic Title duplicated the first canonical heading"))
+		} else {
+			receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("visible-text", legacyParagraphs, sharedDOCX.Paragraphs, ""))
+		}
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("visible-text", legacyParagraphs, sharedDOCX.Paragraphs, ""))
+	}
+	if len(legacyDOCX.TOC) == 0 && len(sharedDOCX.TOC) > 0 {
+		receipt.Dimensions = append(receipt.Dimensions, intentionalDimension("table-of-contents", legacyDOCX.TOC, sharedDOCX.TOC,
+			comparisonExceptionCorporate, "published organization default declares a table of contents"))
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("table-of-contents", legacyDOCX.TOC, sharedDOCX.TOC, ""))
+	}
+
+	if equalJSON(legacyDOCX.PageSize, sharedDOCX.PageSize) {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("page-size", legacyDOCX.PageSize, sharedDOCX.PageSize, ""))
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, ComparisonDimension{Name: "page-size", Status: "accidental", LegacyHash: digestJSON(legacyDOCX.PageSize), SharedHash: digestJSON(sharedDOCX.PageSize), Detail: "page size changed"})
+	}
+	if equalJSON(legacyDOCX.Margins, sharedDOCX.Margins) {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("page-margins", legacyDOCX.Margins, sharedDOCX.Margins, ""))
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, intentionalDimension("page-margins", legacyDOCX.Margins, sharedDOCX.Margins,
+			comparisonExceptionCorporate, "published organization default owns page margins"))
+	}
+	if legacyDOCX.Headers == sharedDOCX.Headers && legacyDOCX.Footers == sharedDOCX.Footers {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("header-footer", []int{legacyDOCX.Headers, legacyDOCX.Footers}, []int{sharedDOCX.Headers, sharedDOCX.Footers}, ""))
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, intentionalDimension("header-footer", []int{legacyDOCX.Headers, legacyDOCX.Footers}, []int{sharedDOCX.Headers, sharedDOCX.Footers},
+			comparisonExceptionCorporate, "published organization default adds approved header/footer rules"))
+	}
+	if legacyDOCX.Bookmarks == sharedDOCX.Bookmarks {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("node-bookmarks", legacyDOCX.Bookmarks, sharedDOCX.Bookmarks, ""))
+	} else if legacyDOCX.Bookmarks == 0 && sharedDOCX.Bookmarks > 0 {
+		receipt.Dimensions = append(receipt.Dimensions, intentionalDimension("node-bookmarks", legacyDOCX.Bookmarks, sharedDOCX.Bookmarks,
+			comparisonExceptionAnchors, "shared output anchors canonical node IDs"))
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("node-bookmarks", legacyDOCX.Bookmarks, sharedDOCX.Bookmarks, ""))
+	}
+	if legacyDOCX.ExternalLinks == sharedDOCX.ExternalLinks {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("safe-links", legacyDOCX.ExternalLinks, sharedDOCX.ExternalLinks, ""))
+	} else if legacyDOCX.ExternalLinks > 0 && sharedDOCX.ExternalLinks == 0 {
+		receipt.Dimensions = append(receipt.Dimensions, intentionalDimension("safe-links", legacyDOCX.ExternalLinks, sharedDOCX.ExternalLinks,
+			comparisonExceptionSafeLinks, "shared links are inert labels with no external relationship or target leakage"))
+	} else {
+		receipt.Dimensions = append(receipt.Dimensions, compareExactDimension("safe-links", legacyDOCX.ExternalLinks, sharedDOCX.ExternalLinks, ""))
+	}
+	receipt.Dimensions = append(receipt.Dimensions,
+		compareExactDimension("security-objects", legacyDOCX.ForbiddenObject, sharedDOCX.ForbiddenObject, ""),
+		compareExactDimension("word-semantics", legacyDOCX.Semantics, sharedDOCX.Semantics, ""),
+		compareExactDimension("word-numbering", legacyDOCX.Numbering, sharedDOCX.Numbering, ""),
+		compareExactDimension("word-task-state", legacyDOCX.Tasks, sharedDOCX.Tasks, ""),
+		compareExactDimension("word-thematic-rule", legacyDOCX.ThematicRules, sharedDOCX.ThematicRules, ""),
+		compareExactDimension("word-table-alignment", legacyDOCX.TableAlignments, sharedDOCX.TableAlignments, ""),
+	)
+	return finishComparison(receipt)
+}
+
+func finishComparison(receipt ComparisonReceipt) ComparisonReceipt {
+	for _, dimension := range receipt.Dimensions {
+		switch dimension.Status {
+		case "intentional":
+			receipt.IntentionalDifferences = append(receipt.IntentionalDifferences, dimension.Name+": "+dimension.Detail)
+		case "accidental":
+			receipt.AccidentalDifferences = append(receipt.AccidentalDifferences, dimension.Name+": "+dimension.Detail)
+		case "unassessed":
+			receipt.Unassessed = append(receipt.Unassessed, dimension.Name+": "+dimension.Detail)
+		}
+	}
+	switch {
+	case len(receipt.Unassessed) > 0:
+		receipt.Assessment = "unassessed"
+	case len(receipt.AccidentalDifferences) > 0:
+		receipt.Assessment = "differences"
+	default:
+		receipt.Assessment = "assessed"
+	}
+	return receipt
+}
+
+func compareExactDimension(name string, legacy, shared any, detail string) ComparisonDimension {
+	status := "match"
+	if !equalJSON(legacy, shared) {
+		status = "accidental"
+		if detail == "" {
+			detail = "normalized values differ"
+		}
+	}
+	return ComparisonDimension{Name: name, Status: status, LegacyHash: digestJSON(legacy), SharedHash: digestJSON(shared), Detail: detail}
+}
+
+func intentionalDimension(name string, legacy, shared any, exceptionID, detail string) ComparisonDimension {
+	return ComparisonDimension{Name: name, Status: "intentional", LegacyHash: digestJSON(legacy), SharedHash: digestJSON(shared), ExceptionID: exceptionID, Detail: detail}
+}
+
+func legacyComparisonStructure(source string) []comparisonBlock {
+	document := parseMarkdown(source)
+	blocks := make([]comparisonBlock, 0, len(document.blocks))
+	for _, block := range document.blocks {
+		entry := comparisonBlock{Level: block.level}
+		switch block.kind {
+		case bHeading:
+			entry.Kind, entry.Text = "heading", []string{visibleLegacyRuns(document.parseInline(strings.Join(block.lines, "\n")))}
+		case bPara:
+			entry.Kind, entry.Text = "paragraph", []string{visibleLegacyRuns(document.parseInline(strings.Join(block.lines, "\n")))}
+		case bQuote:
+			entry.Kind, entry.Text = "quote", []string{normalizeComparisonText(strings.Join(block.lines, "\n"))}
+		case bCode:
+			entry.Kind, entry.Text = "code-block", []string{strings.Join(block.lines, "\n") + "\n"}
+		case bList:
+			entry.Kind = "list"
+			for _, item := range block.items {
+				entry.Text = append(entry.Text, visibleLegacyRuns(document.parseInline(item.text)))
+			}
+		case bTable:
+			entry.Kind = "table"
+			for _, row := range block.rows {
+				visible := make([]string, len(row))
+				for index := range row {
+					visible[index] = visibleLegacyRuns(document.parseInline(row[index]))
+				}
+				entry.Rows = append(entry.Rows, visible)
+			}
+		case bHR:
+			entry.Kind = "thematic-break"
+		}
+		blocks = append(blocks, entry)
+	}
+	return blocks
+}
+
+func canonicalComparisonStructure(document model.CanonicalDocument) []comparisonBlock {
+	blocks := make([]comparisonBlock, 0, len(document.Root.Children))
+	for _, node := range document.Root.Children {
+		entry := comparisonBlock{Kind: string(node.Kind)}
+		if node.Kind == model.NodeHeading {
+			fmt.Sscanf(node.Semantic, "heading%d", &entry.Level)
+		}
+		switch node.Kind {
+		case model.NodeHeading, model.NodeParagraph, model.NodeQuote, model.NodeCodeBlock, model.NodeCallout:
+			entry.Text = []string{normalizeComparisonNodeText(node)}
+		case model.NodeList:
+			for _, item := range node.Children {
+				entry.Text = append(entry.Text, normalizeComparisonNodeText(item))
+			}
+		case model.NodeTable:
+			for _, row := range node.Children {
+				values := make([]string, len(row.Children))
+				for index := range row.Children {
+					values[index] = normalizeComparisonNodeText(row.Children[index])
+				}
+				entry.Rows = append(entry.Rows, values)
+			}
+		case model.NodeThematicBreak:
+		default:
+			continue
+		}
+		blocks = append(blocks, entry)
+	}
+	return blocks
+}
+
+func normalizeComparisonNodeText(node model.Node) string {
+	if node.Kind == model.NodeCodeBlock {
+		return node.Text
+	}
+	return normalizeComparisonText(node.Text)
+}
+
+func visibleLegacyRuns(runs []run) string {
+	var value strings.Builder
+	for _, run := range runs {
+		value.WriteString(run.text)
+	}
+	return normalizeComparisonText(value.String())
+}
+
+func normalizeComparisonText(value string) string { return strings.Join(strings.Fields(value), " ") }
+
+func sourceComparisonSemantics(source string) comparisonSemantics {
+	document := parseMarkdown(source)
+	result := comparisonSemantics{}
+	for _, block := range document.blocks {
+		switch block.kind {
+		case bHR:
+			result.ThematicBreaks++
+		case bTable:
+			rows := make([][]string, len(block.rows))
+			for rowIndex, row := range block.rows {
+				rows[rowIndex] = make([]string, len(row))
+				for cellIndex := range row {
+					alignment := "left"
+					if cellIndex < len(block.align) && block.align[cellIndex] != "" {
+						alignment = block.align[cellIndex]
+					}
+					rows[rowIndex][cellIndex] = alignment
+				}
+			}
+			result.TableAlignments = append(result.TableAlignments, rows)
+		}
+	}
+
+	type openList struct {
+		indent  int
+		ordered bool
+		index   int
+	}
+	var stack []openList
+	inFence := false
+	fence := ""
+	for _, rawLine := range strings.Split(strings.ReplaceAll(source, "\r\n", "\n"), "\n") {
+		trimmed := strings.TrimSpace(rawLine)
+		if strings.HasPrefix(trimmed, "```") || strings.HasPrefix(trimmed, "~~~") {
+			marker := trimmed[:3]
+			if !inFence {
+				inFence, fence = true, marker
+			} else if marker == fence {
+				inFence, fence = false, ""
+			}
+			stack = nil
+			continue
+		}
+		if inFence {
+			continue
+		}
+		line, found := parseComparisonListLine(rawLine)
+		if !found {
+			stack = nil
+			continue
+		}
+		for len(stack) > 0 && stack[len(stack)-1].indent > line.indent {
+			stack = stack[:len(stack)-1]
+		}
+		if len(stack) > 0 && stack[len(stack)-1].indent == line.indent && stack[len(stack)-1].ordered != line.ordered {
+			stack = stack[:len(stack)-1]
+		}
+		if len(stack) == 0 || stack[len(stack)-1].indent != line.indent {
+			start := 0
+			if line.ordered {
+				start = line.start
+			}
+			result.Lists = append(result.Lists, comparisonList{Depth: len(stack), Ordered: line.ordered, Start: start})
+			stack = append(stack, openList{indent: line.indent, ordered: line.ordered, index: len(result.Lists) - 1})
+		}
+		list := &result.Lists[stack[len(stack)-1].index]
+		text := normalizeComparisonText(visibleLegacyRuns(document.parseInline(line.text)))
+		list.Items = append(list.Items, comparisonListItem{Text: text, Checked: line.checked})
+		if line.checked != "" {
+			result.Tasks = append(result.Tasks, comparisonTask{Text: text, Checked: line.checked})
+		}
+	}
+	return result
+}
+
+type comparisonListLine struct {
+	indent  int
+	ordered bool
+	start   int
+	checked string
+	text    string
+}
+
+func parseComparisonListLine(raw string) (comparisonListLine, bool) {
+	line := strings.TrimRight(raw, " \t")
+	indent := 0
+	for indent < len(line) && line[indent] == ' ' {
+		indent++
+	}
+	if indent < len(line) && line[indent] == '\t' {
+		return comparisonListLine{}, false
+	}
+	rest := line[indent:]
+	parsed := comparisonListLine{indent: indent, start: 1}
+	for _, marker := range []string{"- ", "* ", "+ "} {
+		if strings.HasPrefix(rest, marker) {
+			parsed.text = strings.TrimSpace(strings.TrimPrefix(rest, marker))
+			if len(parsed.text) >= 3 && parsed.text[0] == '[' && parsed.text[2] == ']' && (parsed.text[1] == ' ' || parsed.text[1] == 'x' || parsed.text[1] == 'X') {
+				parsed.checked = strconv.FormatBool(parsed.text[1] == 'x' || parsed.text[1] == 'X')
+				parsed.text = strings.TrimSpace(parsed.text[3:])
+			}
+			return parsed, true
+		}
+	}
+	digits := 0
+	for digits < len(rest) && rest[digits] >= '0' && rest[digits] <= '9' {
+		digits++
+	}
+	if digits == 0 || digits > 9 || digits+1 >= len(rest) || (rest[digits] != '.' && rest[digits] != ')') || rest[digits+1] != ' ' {
+		return comparisonListLine{}, false
+	}
+	value, err := strconv.Atoi(rest[:digits])
+	if err != nil {
+		return comparisonListLine{}, false
+	}
+	parsed.start = value
+	parsed.ordered = true
+	parsed.text = strings.TrimSpace(rest[digits+2:])
+	return parsed, true
+}
+
+func canonicalComparisonSemantics(document model.CanonicalDocument) comparisonSemantics {
+	result := comparisonSemantics{}
+	var addList func(model.Node, int)
+	addList = func(list model.Node, depth int) {
+		ordered := nodePropertyValue(list, "ordered") == "true"
+		start := 0
+		if ordered {
+			start = 1
+			if value := nodePropertyValue(list, "start"); value != "" {
+				if parsed, err := strconv.Atoi(value); err == nil {
+					start = parsed
+				}
+			}
+		}
+		summary := comparisonList{Depth: depth, Ordered: ordered, Start: start}
+		for _, item := range list.Children {
+			checked := nodePropertyValue(item, "checked")
+			text := normalizeComparisonNodeText(item)
+			summary.Items = append(summary.Items, comparisonListItem{Text: text, Checked: checked})
+			if checked != "" {
+				result.Tasks = append(result.Tasks, comparisonTask{Text: text, Checked: checked})
+			}
+		}
+		result.Lists = append(result.Lists, summary)
+		for _, item := range list.Children {
+			for _, child := range item.Children {
+				if child.Kind == model.NodeList {
+					addList(child, depth+1)
+				}
+			}
+		}
+	}
+	for _, node := range document.Root.Children {
+		switch node.Kind {
+		case model.NodeList:
+			addList(node, 0)
+		case model.NodeThematicBreak:
+			result.ThematicBreaks++
+		case model.NodeTable:
+			rows := make([][]string, len(node.Children))
+			for rowIndex, row := range node.Children {
+				rows[rowIndex] = make([]string, len(row.Children))
+				for cellIndex, cell := range row.Children {
+					alignment := nodePropertyValue(cell, "alignment")
+					if alignment == "" {
+						alignment = "left"
+					}
+					rows[rowIndex][cellIndex] = alignment
+				}
+			}
+			result.TableAlignments = append(result.TableAlignments, rows)
+		}
+	}
+	return result
+}
+
+func nodePropertyValue(node model.Node, name string) string {
+	for _, property := range node.Properties {
+		if property.Name == name {
+			return property.Value
+		}
+	}
+	return ""
+}
+
+func inspectComparisonDOCX(raw []byte) (docxComparison, error) {
+	reader, err := zip.NewReader(bytes.NewReader(raw), int64(len(raw)))
+	if err != nil {
+		return docxComparison{}, err
+	}
+	parts := make(map[string][]byte, len(reader.File))
+	for _, file := range reader.File {
+		stream, err := file.Open()
+		if err != nil {
+			return docxComparison{}, err
+		}
+		content, err := io.ReadAll(stream)
+		stream.Close()
+		if err != nil {
+			return docxComparison{}, err
+		}
+		parts[file.Name] = content
+	}
+	document, found := parts["word/document.xml"]
+	if !found {
+		return docxComparison{}, errors.New("word/document.xml missing")
+	}
+	result := docxComparison{PageSize: map[string]string{}, Margins: map[string]string{}, Semantics: map[string]bool{}}
+	decoder := xml.NewDecoder(bytes.NewReader(document))
+	var paragraph strings.Builder
+	type rawNumberedParagraph struct {
+		Level int
+		NumID string
+		Text  string
+	}
+	var numbered []rawNumberedParagraph
+	inParagraph, inText, inCell, inParagraphBorder := false, false, false, false
+	paragraphLevel, paragraphNumID, cellAlignment := 0, "", ""
+	paragraphRule := false
+	// A TOC is its field's paragraphs plus an immediately preceding caption
+	// paragraph excluded from the outline (outlineLvl 9).
+	inInstruction, paragraphTOC, paragraphCaption := false, false, false
+	fieldDepth, tocFieldDepth := 0, 0
+	var pendingCaption []string
+	var table [][]string
+	var row []string
+	for {
+		token, err := decoder.Token()
+		if errors.Is(err, io.EOF) {
+			break
+		}
+		if err != nil {
+			return docxComparison{}, err
+		}
+		switch value := token.(type) {
+		case xml.StartElement:
+			switch value.Name.Local {
+			case "p":
+				inParagraph = true
+				paragraph.Reset()
+				paragraphLevel, paragraphNumID, paragraphRule = 0, "", false
+				paragraphTOC, paragraphCaption = tocFieldDepth > 0, false
+			case "t":
+				if inParagraph {
+					inText = true
+				}
+			case "outlineLvl":
+				if inParagraph && xmlAttributeValue(value.Attr, "val") == "9" {
+					paragraphCaption = true
+				}
+			case "fldChar":
+				switch xmlAttributeValue(value.Attr, "fldCharType") {
+				case "begin":
+					fieldDepth++
+				case "end":
+					if fieldDepth == tocFieldDepth {
+						tocFieldDepth = 0
+					}
+					fieldDepth = max(fieldDepth-1, 0)
+				}
+			case "instrText":
+				inInstruction = true
+			case "numId":
+				if inParagraph {
+					paragraphNumID = xmlAttributeValue(value.Attr, "val")
+				}
+			case "ilvl":
+				if inParagraph {
+					paragraphLevel, _ = strconv.Atoi(xmlAttributeValue(value.Attr, "val"))
+				}
+			case "pBdr":
+				if inParagraph {
+					inParagraphBorder = true
+				}
+			case "bottom":
+				if inParagraphBorder {
+					paragraphRule = true
+				}
+			case "tbl":
+				table = nil
+			case "tr":
+				row = nil
+			case "tc":
+				inCell, cellAlignment = true, ""
+			case "jc":
+				if inCell {
+					cellAlignment = xmlAttributeValue(value.Attr, "val")
+				}
+			case "pgSz":
+				copyAttributes(result.PageSize, value.Attr, "w", "h", "orient")
+			case "pgMar":
+				copyAttributes(result.Margins, value.Attr, "top", "right", "bottom", "left", "header", "footer", "gutter")
+			case "bookmarkStart":
+				result.Bookmarks++
+			}
+		case xml.CharData:
+			if inText {
+				paragraph.Write(value)
+			}
+			if inInstruction && tocFieldDepth == 0 && fieldDepth > 0 {
+				if fields := strings.Fields(string(value)); len(fields) > 0 && strings.EqualFold(fields[0], "TOC") {
+					tocFieldDepth, paragraphTOC = fieldDepth, inParagraph
+				}
+			}
+		case xml.EndElement:
+			switch value.Name.Local {
+			case "t":
+				inText = false
+			case "instrText":
+				inInstruction = false
+			case "pBdr":
+				inParagraphBorder = false
+			case "p":
+				text := normalizeComparisonText(paragraph.String())
+				if paragraphTOC {
+					result.TOC = append(result.TOC, pendingCaption...)
+					pendingCaption = nil
+					if text != "" {
+						result.TOC = append(result.TOC, text)
+					}
+					inParagraph = false
+					break
+				}
+				result.Paragraphs = append(result.Paragraphs, pendingCaption...)
+				pendingCaption = nil
+				if text != "" && paragraphCaption {
+					pendingCaption = []string{text}
+				} else if text != "" {
+					result.Paragraphs = append(result.Paragraphs, text)
+				}
+				if paragraphNumID != "" {
+					numbered = append(numbered, rawNumberedParagraph{Level: paragraphLevel, NumID: paragraphNumID, Text: text})
+					switch {
+					case strings.HasPrefix(text, "☑"):
+						result.Tasks = append(result.Tasks, comparisonTask{Text: normalizeComparisonText(strings.TrimSpace(strings.TrimPrefix(text, "☑"))), Checked: "true"})
+					case strings.HasPrefix(text, "☐"):
+						result.Tasks = append(result.Tasks, comparisonTask{Text: normalizeComparisonText(strings.TrimSpace(strings.TrimPrefix(text, "☐"))), Checked: "false"})
+					}
+				}
+				if paragraphRule {
+					result.ThematicRules++
+				}
+				inParagraph = false
+			case "tc":
+				if cellAlignment == "" {
+					cellAlignment = "left"
+				}
+				row = append(row, cellAlignment)
+				inCell = false
+			case "tr":
+				table = append(table, row)
+			case "tbl":
+				result.TableAlignments = append(result.TableAlignments, table)
+			}
+		}
+	}
+	result.Paragraphs = append(result.Paragraphs, pendingCaption...)
+	if len(numbered) > 0 {
+		numbering, found := parts["word/numbering.xml"]
+		if !found {
+			return docxComparison{}, errors.New("word/numbering.xml missing")
+		}
+		definitions, instances, err := inspectDOCXNumbering(numbering)
+		if err != nil {
+			return docxComparison{}, err
+		}
+		for _, paragraph := range numbered {
+			instance, found := instances[paragraph.NumID]
+			if !found {
+				return docxComparison{}, fmt.Errorf("numbering instance %s missing", paragraph.NumID)
+			}
+			level := definitions[instance.AbstractID][paragraph.Level]
+			start := level.Start
+			if start == 0 {
+				start = 1
+			}
+			if override, found := instance.Overrides[paragraph.Level]; found {
+				start = override
+			}
+			result.Numbering = append(result.Numbering, docxNumbering{Level: paragraph.Level, Format: level.Format, Start: start})
+		}
+	}
+	for name, content := range parts {
+		lower := strings.ToLower(name)
+		if strings.HasPrefix(lower, "word/header") && strings.HasSuffix(lower, ".xml") {
+			result.Headers++
+		}
+		if strings.HasPrefix(lower, "word/footer") && strings.HasSuffix(lower, ".xml") {
+			result.Footers++
+		}
+		if strings.HasSuffix(lower, ".rels") {
+			result.ExternalLinks += strings.Count(strings.ToLower(string(content)), `targetmode="external"`)
+		}
+		if strings.Contains(lower, "vba") || strings.Contains(lower, "activex") || strings.Contains(lower, "embeddings") {
+			result.ForbiddenObject = true
+		}
+	}
+	xmlText := string(document)
+	result.Semantics = map[string]bool{
+		"bold": strings.Contains(xmlText, "<w:b"), "italic": strings.Contains(xmlText, "<w:i"),
+		"strike": strings.Contains(xmlText, "<w:strike"), "inline-code": strings.Contains(xmlText, "inlineCode") || strings.Contains(xmlText, "Consolas"),
+		"link-label": strings.Contains(xmlText, `w:val="link"`) || strings.Contains(xmlText, `w:val="Hyperlink"`),
+		"quote":      strings.Contains(strings.ToLower(xmlText), `w:val="quote"`), "code-block": strings.Contains(strings.ToLower(xmlText), `w:val="code`),
+		"list": strings.Contains(xmlText, "<w:numPr>"), "table": strings.Contains(xmlText, "<w:tbl>"),
+	}
+	return result, nil
+}
+
+type docxNumberingLevel struct {
+	Format string
+	Start  int
+}
+
+type docxNumberingInstance struct {
+	AbstractID string
+	Overrides  map[int]int
+}
+
+func inspectDOCXNumbering(raw []byte) (map[string]map[int]docxNumberingLevel, map[string]docxNumberingInstance, error) {
+	definitions := map[string]map[int]docxNumberingLevel{}
+	instances := map[string]docxNumberingInstance{}
+	decoder := xml.NewDecoder(bytes.NewReader(raw))
+	currentAbstract, currentInstance := "", ""
+	currentLevel, currentOverride := -1, -1
+	for {
+		token, err := decoder.Token()
+		if errors.Is(err, io.EOF) {
+			return definitions, instances, nil
+		}
+		if err != nil {
+			return nil, nil, err
+		}
+		switch value := token.(type) {
+		case xml.StartElement:
+			switch value.Name.Local {
+			case "abstractNum":
+				currentAbstract = xmlAttributeValue(value.Attr, "abstractNumId")
+				definitions[currentAbstract] = map[int]docxNumberingLevel{}
+			case "lvl":
+				if currentAbstract != "" {
+					currentLevel, _ = strconv.Atoi(xmlAttributeValue(value.Attr, "ilvl"))
+				}
+			case "start":
+				if currentAbstract != "" && currentLevel >= 0 {
+					level := definitions[currentAbstract][currentLevel]
+					level.Start, _ = strconv.Atoi(xmlAttributeValue(value.Attr, "val"))
+					definitions[currentAbstract][currentLevel] = level
+				}
+			case "numFmt":
+				if currentAbstract != "" && currentLevel >= 0 {
+					level := definitions[currentAbstract][currentLevel]
+					level.Format = xmlAttributeValue(value.Attr, "val")
+					definitions[currentAbstract][currentLevel] = level
+				}
+			case "num":
+				currentInstance = xmlAttributeValue(value.Attr, "numId")
+				instances[currentInstance] = docxNumberingInstance{Overrides: map[int]int{}}
+			case "abstractNumId":
+				if currentInstance != "" {
+					instance := instances[currentInstance]
+					instance.AbstractID = xmlAttributeValue(value.Attr, "val")
+					instances[currentInstance] = instance
+				}
+			case "lvlOverride":
+				if currentInstance != "" {
+					currentOverride, _ = strconv.Atoi(xmlAttributeValue(value.Attr, "ilvl"))
+				}
+			case "startOverride":
+				if currentInstance != "" && currentOverride >= 0 {
+					instance := instances[currentInstance]
+					instance.Overrides[currentOverride], _ = strconv.Atoi(xmlAttributeValue(value.Attr, "val"))
+					instances[currentInstance] = instance
+				}
+			}
+		case xml.EndElement:
+			switch value.Name.Local {
+			case "lvl":
+				currentLevel = -1
+			case "abstractNum":
+				currentAbstract = ""
+			case "lvlOverride":
+				currentOverride = -1
+			case "num":
+				currentInstance = ""
+			}
+		}
+	}
+}
+
+func xmlAttributeValue(attributes []xml.Attr, name string) string {
+	for _, attribute := range attributes {
+		if attribute.Name.Local == name {
+			return attribute.Value
+		}
+	}
+	return ""
+}
+
+func copyAttributes(target map[string]string, attributes []xml.Attr, names ...string) {
+	wanted := make(map[string]bool, len(names))
+	for _, name := range names {
+		wanted[name] = true
+	}
+	for _, attribute := range attributes {
+		if wanted[attribute.Name.Local] {
+			target[attribute.Name.Local] = attribute.Value
+		}
+	}
+}
+
+func equalJSON(left, right any) bool { return bytes.Equal(canonicalJSON(left), canonicalJSON(right)) }
+
+func digestJSON(value any) string { return digestBytes(canonicalJSON(value)) }
+
+func canonicalJSON(value any) []byte {
+	raw, _ := json.Marshal(value)
+	return raw
+}
+
+func digestBytes(value []byte) string {
+	sum := sha256.Sum256(value)
+	return hex.EncodeToString(sum[:])
+}

internal/docgen/docgen.go

@@ -18,8 +18,10 @@ import (
 	"strings"
 )
 
-// Build 生成 docx 字节。title 为文档标题；为空时取首个标题块，再无则不带 Title 段。
-func Build(title, markdown string) ([]byte, error) {
+// legacyBuild is retained only for an explicitly enabled migration comparison.
+// Production callers must use Generate and never fall back here after a shared
+// renderer failure.
+func legacyBuild(title, markdown string) ([]byte, error) {
 	doc := parseMarkdown(markdown)
 	title = strings.TrimSpace(title)
 	if title == "" {

internal/docgen/docgen_test.go

@@ -9,42 +9,47 @@ import (
 	"testing"
 )
 
-// 样例正文：会议纪要形态（标题/表格/列表/任务项/引用/链接/删除线/分隔线）。
+// 样例正文：会议纪要形态，也是 legacy/shared 唯一完整语义奇偶性夹具。
 // 行内代码用 \x60（反引号）拼接——raw string 里不能直接写字面反引号。
 const sampleMinutes = "# 研发周会纪要\n" + `
 ## 一、基本信息
 
-| 项目 | 内容 |
-|---|---|
-| 时间 | 2026-09-30 14:00 |
-| 地点 | 3F 会议室 |
-| 主持人 | 陈威 |
+正文含 **粗体**、*强调*、~~删除~~、` + "\x60inline\x60" + ` 和 [安全标签](https://example.com/private-target)。
 
 ## 二、讨论要点
 
-- **架构**：docx 生成走后端转换，见 [方案](https://example.com/plan)
-- 排版要求：标题层级、表格、列表
-  - 二级要点：交付物卡片
+- **架构**：共享渲染器
+- 排版要求
+  1. 有序子项
+     - 深层无序子项
 - [x] 已完成：预览装配
 - [ ] 待办：样式打磨
 
 > 会议结论：按周五节点交付。
 
+` + "\x60\x60\x60go" + `
+fmt.Println("backtick")
+` + "\x60\x60\x60" + `
+
+~~~go
+fmt.Println("tilde")
+~~~~
+
 ## 三、决议
 
-1. 采用 write_docx 工具
-2. 对话内出交付物卡片
-
-` + "\x60write_docx\x60 与 ~~write_artifact~~ 的分工见上文。" + `
+3. 第三项
+4. 第四项
 
 ---
 
-后续：周报合并。
+| 左 | 中 | 右 | 默认 |
+| :--- | :---: | ---: | --- |
+| L | C | R | D |
 `
 
 func buildSample(t *testing.T) []byte {
 	t.Helper()
-	b, err := Build("", sampleMinutes)
+	b, err := legacyBuild("", sampleMinutes)
 	if err != nil {
 		t.Fatalf("Build: %v", err)
 	}
@@ -166,13 +171,13 @@ func TestBuildHyperlinkRels(t *testing.T) {
 			rc.Close()
 		}
 	}
-	if !strings.Contains(rels, `Id="rIdH1"`) || !strings.Contains(rels, "https://example.com/plan") {
+	if !strings.Contains(rels, `Id="rIdH1"`) || !strings.Contains(rels, "https://example.com/private-target") {
 		t.Errorf("超链接 relationship 缺失: %s", rels)
 	}
 }
 
 func TestBuildEscapesXML(t *testing.T) {
-	b, err := Build("标题<a>&'", "包含 <标签> & \"引号\" 的正文")
+	b, err := legacyBuild("标题<a>&'", "包含 <标签> & \"引号\" 的正文")
 	if err != nil {
 		t.Fatalf("Build: %v", err)
 	}
@@ -202,7 +207,7 @@ func TestBuildEscapesXML(t *testing.T) {
 
 func TestBuildPlainTextFallback(t *testing.T) {
 	// 无任何 Markdown 结构的纯文本：按段落输出，不 panic、产物良构。
-	b, err := Build("", "第一行\n第二行\n\n第二段")
+	b, err := legacyBuild("", "第一行\n第二行\n\n第二段")
 	if err != nil {
 		t.Fatalf("Build: %v", err)
 	}

internal/docgen/internal/genrendereridentity/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	check := flag.Bool("check", false, "fail when the generated identity differs from the checked-out renderer")
+	flag.Parse()
+	repository := gitOutput("rev-parse", "--show-toplevel")
+	revision := gitOutput("-C", filepath.Join(repository, "deps", "agent-document-renderer"), "rev-parse", "HEAD")
+	content := []byte(fmt.Sprintf("// Code generated from deps/agent-document-renderer; DO NOT EDIT.\n\npackage docgen\n\nconst rendererRevision = %q\n\nconst RendererIdentity = \"agent-document-renderer@\" + rendererRevision\n", revision))
+	target := filepath.Join(repository, "internal", "docgen", "renderer_identity_generated.go")
+	if *check {
+		current, err := os.ReadFile(target)
+		if err != nil || !bytes.Equal(current, content) {
+			fmt.Fprintf(os.Stderr, "renderer identity is stale for %s\n", revision)
+			os.Exit(1)
+		}
+		return
+	}
+	if err := os.WriteFile(target, content, 0o644); err != nil {
+		panic(err)
+	}
+}
+
+func gitOutput(arguments ...string) string {
+	output, err := exec.Command("git", arguments...).Output()
+	if err != nil {
+		panic(err)
+	}
+	return strings.TrimSpace(string(output))
+}

internal/docgen/operation.go

@@ -0,0 +1,40 @@
+package docgen
+
+import (
+	"time"
+
+	"agent-document-renderer/render"
+)
+
+type OperationRequest struct {
+	OperationID     string      `json:"operationId"`
+	DocumentID      string      `json:"documentId"`
+	Title           string      `json:"name"`
+	DocumentType    string      `json:"documentType,omitempty"`
+	Language        string      `json:"language,omitempty"`
+	Markdown        []byte      `json:"-"`
+	Mode            render.Mode `json:"mode"`
+	Controlled      bool        `json:"controlled"`
+	ProjectDocument bool        `json:"projectDocument"`
+}
+
+type ReceiptArtifact struct {
+	Role   string `json:"role"`
+	ID     string `json:"id"`
+	Name   string `json:"name"`
+	MIME   string `json:"mime"`
+	Size   int64  `json:"size"`
+	SHA256 string `json:"sha256"`
+}
+
+type OperationReceipt struct {
+	OperationID string            `json:"operationId"`
+	Outcome     string            `json:"outcome"`
+	State       string            `json:"state"`
+	FrozenAt    time.Time         `json:"frozenAt"`
+	DeliveryKey string            `json:"deliveryKey,omitempty"`
+	Renderer    string            `json:"rendererIdentity"`
+	CacheHit    bool              `json:"cacheHit,omitempty"`
+	Artifacts   []ReceiptArtifact `json:"artifacts,omitempty"`
+	Error       string            `json:"error,omitempty"`
+}

internal/docgen/renderer.go

@@ -0,0 +1,579 @@
+package docgen
+
+import (
+	"archive/zip"
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"slices"
+	"sort"
+	"strings"
+	"time"
+
+	markdownrenderer "agent-document-renderer/markdown"
+	"agent-document-renderer/model"
+	"agent-document-renderer/profile"
+	"agent-document-renderer/profiles"
+	"agent-document-renderer/render"
+	"agent-document-renderer/word"
+)
+
+const (
+	WorkspaceProjectID    = "workspace"
+	ManifestSchemaVersion = "backend-document-delivery/v1"
+	AdapterIdentity       = RendererIdentity + "/word-adapter-v1"
+	defaultProfileID      = "company.default"
+	defaultRenderCapacity = 4
+)
+
+var renderCapacity = make(chan struct{}, defaultRenderCapacity)
+
+var (
+	ErrRDMRequired     = errors.New("docgen: controlled or project document requires RDM")
+	ErrProfileMismatch = errors.New("docgen: organization-default profile mismatch")
+	ErrResourceLimit   = errors.New("docgen: resource limit exceeded")
+)
+
+type Artifact struct {
+	Name   string
+	MIME   string
+	SHA256 string
+	Bytes  []byte
+}
+
+type Request struct {
+	DocumentID      string
+	Title           string
+	DocumentType    string
+	Language        string
+	Markdown        []byte
+	Mode            render.Mode
+	FrozenAt        time.Time
+	RequestedBy     string
+	ProfileID       string
+	ProfileVersion  string
+	Controlled      bool
+	ProjectDocument bool
+	LegacySource    []byte
+	Limits          Limits
+}
+
+type Limits struct {
+	MaxMarkdownBytes int
+	MaxNodes         int
+	MaxDepth         int
+}
+
+type DiagnosticError struct {
+	Stage       string
+	Code        string
+	Diagnostics []render.Diagnostic
+	Err         error
+}
+
+func (failure *DiagnosticError) Error() string {
+	if failure == nil {
+		return "docgen: diagnostic failure"
+	}
+	return fmt.Sprintf("docgen: %s: %s: %v", failure.Stage, failure.Code, failure.Err)
+}
+
+func (failure *DiagnosticError) Unwrap() error {
+	if failure == nil {
+		return nil
+	}
+	return failure.Err
+}
+
+type ComparisonDimension struct {
+	Name        string `json:"name"`
+	Status      string `json:"status"`
+	LegacyHash  string `json:"legacyHash,omitempty"`
+	SharedHash  string `json:"sharedHash,omitempty"`
+	ExceptionID string `json:"exceptionId,omitempty"`
+	Detail      string `json:"detail,omitempty"`
+}
+
+type ComparisonReceipt struct {
+	Enabled                bool                  `json:"enabled"`
+	Assessment             string                `json:"assessment,omitempty"`
+	LegacySHA256           string                `json:"legacySha256,omitempty"`
+	SharedSHA256           string                `json:"sharedSha256,omitempty"`
+	Dimensions             []ComparisonDimension `json:"dimensions,omitempty"`
+	IntentionalDifferences []string              `json:"intentionalDifferences,omitempty"`
+	AccidentalDifferences  []string              `json:"accidentalDifferences,omitempty"`
+	Unassessed             []string              `json:"unassessed,omitempty"`
+}
+
+type RenderOptions struct {
+	MigrationComparison bool
+}
+
+type ManifestArtifact struct {
+	Name   string `json:"name"`
+	MIME   string `json:"mime"`
+	Size   int    `json:"size"`
+	SHA256 string `json:"sha256"`
+}
+
+type ProfileReceipt struct {
+	ProfileID           string   `json:"profileId"`
+	Version             string   `json:"version"`
+	SnapshotHash        string   `json:"snapshotHash"`
+	Candidate           bool     `json:"candidate"`
+	ReviewStatus        string   `json:"reviewStatus"`
+	PublicationAllowed  bool     `json:"publicationAllowed"`
+	Unverified          []string `json:"unverified"`
+	ProfileSHA256       string   `json:"profileSha256"`
+	AssetManifestSHA256 string   `json:"assetManifestSha256"`
+	ReviewSHA256        string   `json:"reviewSha256"`
+}
+
+type Manifest struct {
+	SchemaVersion    string              `json:"schemaVersion"`
+	RendererIdentity string              `json:"rendererIdentity"`
+	AdapterIdentity  string              `json:"adapterIdentity"`
+	SelectionSource  string              `json:"selectionSource"`
+	Profile          ProfileReceipt      `json:"profile"`
+	DocumentRootID   string              `json:"documentRootId"`
+	Artifacts        []ManifestArtifact  `json:"artifacts"`
+	Renderer         render.Manifest     `json:"renderer"`
+	Diagnostics      []render.Diagnostic `json:"diagnostics,omitempty"`
+	NodeAnchors      map[string]string   `json:"nodeAnchors"`
+	Comparison       ComparisonReceipt   `json:"comparison"`
+}
+
+type Delivery struct {
+	Document   model.CanonicalDocument
+	Profile    ProfileReceipt
+	Renderer   render.Manifest
+	Markdown   Artifact
+	DOCX       Artifact
+	Manifest   Artifact
+	Archive    Artifact
+	Comparison ComparisonReceipt
+}
+
+type PreparedDocument struct {
+	Document      model.CanonicalDocument
+	Markdown      Artifact
+	CanonicalHash string
+}
+
+// Prepare canonicalizes and validates authoritative Markdown without loading a
+// profile or invoking the Word adapter. Durable callers persist its Markdown
+// artifact before any rendering work.
+func Prepare(ctx context.Context, request Request) (PreparedDocument, error) {
+	if err := contextErr(ctx); err != nil {
+		return PreparedDocument{}, err
+	}
+	if request.Controlled || request.ProjectDocument || request.Mode == render.ModeReview || request.Mode == render.ModeApproved {
+		return PreparedDocument{}, ErrRDMRequired
+	}
+	if request.Mode != render.ModeWorking && request.Mode != render.ModePreview {
+		return PreparedDocument{}, fmt.Errorf("docgen: unsupported ordinary workspace mode %q", request.Mode)
+	}
+	limits, err := normalizeLimits(request.Limits)
+	if err != nil {
+		return PreparedDocument{}, err
+	}
+	if len(request.Markdown) > limits.MaxMarkdownBytes {
+		return PreparedDocument{}, fmt.Errorf("%w: Markdown is %d bytes, limit is %d", ErrResourceLimit, len(request.Markdown), limits.MaxMarkdownBytes)
+	}
+	materialized := bytes.HasPrefix(bytes.TrimSpace(request.Markdown), []byte("---"))
+	var parsed markdownrenderer.Result
+	if materialized {
+		parsed, err = parseMarkdownContext(ctx, request.Markdown, false, limits)
+		if err != nil {
+			return PreparedDocument{}, classifyParseError(err)
+		}
+		if err := validateWorkspaceRoute(request, parsed.Metadata); err != nil {
+			return PreparedDocument{}, err
+		}
+		if _, err := profileVersionFor(request, &parsed.Metadata); err != nil {
+			return PreparedDocument{}, err
+		}
+	} else {
+		profileVersion, err := profileVersionFor(request, nil)
+		if err != nil {
+			return PreparedDocument{}, err
+		}
+		source, err := workspaceMarkdown(request, defaultProfileID, profileVersion)
+		if err != nil {
+			return PreparedDocument{}, err
+		}
+		if len(source) > limits.MaxMarkdownBytes {
+			return PreparedDocument{}, fmt.Errorf("%w: normalized Markdown source is %d bytes, limit is %d", ErrResourceLimit, len(source), limits.MaxMarkdownBytes)
+		}
+		parsed, err = parseMarkdownContext(ctx, source, true, limits)
+		if err != nil {
+			return PreparedDocument{}, classifyParseError(err)
+		}
+	}
+	if len(parsed.Markdown) > limits.MaxMarkdownBytes {
+		return PreparedDocument{}, fmt.Errorf("%w: materialized Markdown is %d bytes, limit is %d", ErrResourceLimit, len(parsed.Markdown), limits.MaxMarkdownBytes)
+	}
+	canonicalHash, err := parsed.Document.HashContext(ctx)
+	if err != nil {
+		return PreparedDocument{}, err
+	}
+	return PreparedDocument{
+		Document: parsed.Document, CanonicalHash: canonicalHash,
+		Markdown: artifact(safeBaseName(request.Title)+".md", "text/markdown; charset=utf-8", parsed.Markdown),
+	}, nil
+}
+
+type generatorDependencies struct {
+	loadProfile func(context.Context, string) (profiles.Bundle, error)
+	newRenderer func(*profile.AssetReader) render.Renderer
+	legacyBuild func(string, string) ([]byte, error)
+}
+
+func defaultGeneratorDependencies() generatorDependencies {
+	return generatorDependencies{
+		loadProfile: profiles.LoadCompanyDefaultVersionContext,
+		newRenderer: func(assets *profile.AssetReader) render.Renderer { return word.NewAdapter(assets) },
+		legacyBuild: legacyBuild,
+	}
+}
+
+func Generate(ctx context.Context, request Request) (Delivery, error) {
+	return generate(ctx, request, defaultGeneratorDependencies())
+}
+
+func generate(ctx context.Context, request Request, dependencies generatorDependencies) (Delivery, error) {
+	return generateWithOptions(ctx, request, RenderOptions{}, dependencies)
+}
+
+func GenerateWithOptions(ctx context.Context, request Request, options RenderOptions) (Delivery, error) {
+	return generateWithOptions(ctx, request, options, defaultGeneratorDependencies())
+}
+
+func generateWithOptions(ctx context.Context, request Request, options RenderOptions, dependencies generatorDependencies) (Delivery, error) {
+	if err := contextErr(ctx); err != nil {
+		return Delivery{}, err
+	}
+	if request.Controlled || request.ProjectDocument || request.Mode == render.ModeReview || request.Mode == render.ModeApproved {
+		return Delivery{}, ErrRDMRequired
+	}
+	if request.Mode != render.ModeWorking && request.Mode != render.ModePreview {
+		return Delivery{}, fmt.Errorf("docgen: unsupported ordinary workspace mode %q", request.Mode)
+	}
+	limits, err := normalizeLimits(request.Limits)
+	if err != nil {
+		return Delivery{}, err
+	}
+	if len(request.Markdown) > limits.MaxMarkdownBytes {
+		return Delivery{}, fmt.Errorf("%w: Markdown is %d bytes, limit is %d", ErrResourceLimit, len(request.Markdown), limits.MaxMarkdownBytes)
+	}
+	var parsed markdownrenderer.Result
+	var boundMetadata *markdownrenderer.Metadata
+	materialized := bytes.HasPrefix(bytes.TrimSpace(request.Markdown), []byte("---"))
+	if materialized {
+		parsed, err = parseMarkdownContext(ctx, request.Markdown, false, limits)
+		if err != nil {
+			return Delivery{}, classifyParseError(err)
+		}
+		if err := validateWorkspaceRoute(request, parsed.Metadata); err != nil {
+			return Delivery{}, err
+		}
+		boundMetadata = &parsed.Metadata
+	}
+	boundVersion, err := profileVersionFor(request, boundMetadata)
+	if err != nil {
+		return Delivery{}, err
+	}
+	bundle, err := dependencies.loadProfile(ctx, boundVersion)
+	if err != nil {
+		return Delivery{}, fmt.Errorf("docgen: load company default %s: %w", boundVersion, err)
+	}
+	profileID, profileVersion := bundle.Snapshot.ProfileIdentity()
+	if profileID != defaultProfileID || profileVersion != boundVersion {
+		return Delivery{}, fmt.Errorf("%w: loaded %s@%s, bound %s@%s", ErrProfileMismatch,
+			profileID, profileVersion, defaultProfileID, boundVersion)
+	}
+	if !materialized {
+		source, sourceErr := workspaceMarkdown(request, profileID, profileVersion)
+		if sourceErr != nil {
+			return Delivery{}, sourceErr
+		}
+		if len(source) > limits.MaxMarkdownBytes {
+			return Delivery{}, fmt.Errorf("%w: normalized Markdown source is %d bytes, limit is %d", ErrResourceLimit, len(source), limits.MaxMarkdownBytes)
+		}
+		parsed, err = parseMarkdownContext(ctx, source, true, limits)
+		if err != nil {
+			return Delivery{}, classifyParseError(err)
+		}
+	}
+	if len(parsed.Markdown) > limits.MaxMarkdownBytes {
+		return Delivery{}, fmt.Errorf("%w: materialized Markdown is %d bytes, limit is %d", ErrResourceLimit, len(parsed.Markdown), limits.MaxMarkdownBytes)
+	}
+	if err := validateWorkspaceMetadata(request, parsed.Metadata, profileID, profileVersion); err != nil {
+		return Delivery{}, err
+	}
+	if err := contextErr(ctx); err != nil {
+		return Delivery{}, err
+	}
+	if err := acquireRenderCapacity(ctx); err != nil {
+		return Delivery{}, err
+	}
+	result, err := dependencies.newRenderer(bundle.Assets).Render(ctx, render.Request{
+		Document:    parsed.Document,
+		Profile:     bundle.Snapshot,
+		Mode:        request.Mode,
+		FrozenAt:    request.FrozenAt,
+		RequestedBy: request.RequestedBy,
+	})
+	releaseRenderCapacity()
+	if err != nil {
+		code := "renderer_failed"
+		if strings.Contains(err.Error(), "asset") || strings.Contains(err.Error(), "hash") {
+			code = "asset_mismatch"
+		}
+		return Delivery{}, diagnosticFailure("render", code, err, result.Diagnostics)
+	}
+	base := safeBaseName(request.Title)
+	delivery := Delivery{
+		Document: parsed.Document, Renderer: result.Manifest,
+		Profile: ProfileReceipt{
+			ProfileID: profileID, Version: profileVersion, SnapshotHash: bundle.Snapshot.SnapshotHash(),
+			Candidate: bundle.Snapshot.State() != profile.StatePublished, ReviewStatus: bundle.Review.Status, PublicationAllowed: bundle.Review.PublicationAllowed,
+			Unverified: append([]string(nil), bundle.Review.Unverified...), ProfileSHA256: bundle.Review.ProfileSHA256,
+			AssetManifestSHA256: bundle.Review.AssetManifestSHA256, ReviewSHA256: bundle.Review.ReviewSHA256,
+		},
+		Markdown: artifact(base+".md", "text/markdown; charset=utf-8", parsed.Markdown),
+		DOCX:     artifact(base+".docx", result.MIME, result.Artifact),
+	}
+	if options.MigrationComparison {
+		comparisonSource := request.LegacySource
+		if len(comparisonSource) == 0 {
+			comparisonSource = request.Markdown
+		}
+		legacy, err := dependencies.legacyBuild(request.Title, string(comparisonSource))
+		if err != nil {
+			return Delivery{}, fmt.Errorf("docgen: legacy migration comparison: %w", err)
+		}
+		delivery.Comparison = compareLegacyAndShared(request.Title, comparisonSource, parsed.Document, legacy, delivery.DOCX.Bytes)
+	}
+	manifest := Manifest{
+		SchemaVersion: ManifestSchemaVersion, RendererIdentity: RendererIdentity, AdapterIdentity: AdapterIdentity,
+		SelectionSource: "organization-default",
+		Profile:         delivery.Profile,
+		DocumentRootID:  parsed.Document.Root.ID,
+		Artifacts: []ManifestArtifact{
+			manifestArtifact(delivery.Markdown), manifestArtifact(delivery.DOCX),
+		},
+		Renderer: result.Manifest, Diagnostics: append([]render.Diagnostic(nil), result.Diagnostics...),
+		NodeAnchors: cloneStringMap(result.NodeAnchors), Comparison: delivery.Comparison,
+	}
+	manifestRaw, err := json.MarshalIndent(manifest, "", "  ")
+	if err != nil {
+		return Delivery{}, fmt.Errorf("docgen: marshal manifest: %w", err)
+	}
+	manifestRaw = append(manifestRaw, '\n')
+	delivery.Manifest = artifact(base+".manifest.json", "application/json", manifestRaw)
+	archiveRaw, err := buildArchive(delivery.Markdown, delivery.DOCX, delivery.Manifest)
+	if err != nil {
+		return Delivery{}, err
+	}
+	delivery.Archive = artifact(base+".zip", "application/zip", archiveRaw)
+	return delivery, nil
+}
+
+func acquireRenderCapacity(ctx context.Context) error {
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	case renderCapacity <- struct{}{}:
+		return nil
+	}
+}
+
+func releaseRenderCapacity() { <-renderCapacity }
+
+func parseMarkdownContext(ctx context.Context, source []byte, firstImport bool, limits Limits) (markdownrenderer.Result, error) {
+	return markdownrenderer.ParseContext(ctx, source, markdownrenderer.Options{
+		Controlled: true, FirstImport: firstImport, MaxBytes: limits.MaxMarkdownBytes,
+		MaxNodes: limits.MaxNodes, MaxDepth: limits.MaxDepth,
+	})
+}
+
+func classifyParseError(err error) error {
+	if errors.Is(err, markdownrenderer.ErrDocumentLimit) {
+		return fmt.Errorf("%w: %v", ErrResourceLimit, err)
+	}
+	code := "markdown_invalid"
+	switch {
+	case errors.Is(err, markdownrenderer.ErrUnknownMetadata):
+		code = "unknown_metadata"
+	case errors.Is(err, markdownrenderer.ErrHiddenHTML):
+		code = "unsafe_markdown"
+	case errors.Is(err, markdownrenderer.ErrUnsafeDirective) && strings.Contains(err.Error(), "unknown directive"):
+		code = "unknown_directive"
+	case errors.Is(err, markdownrenderer.ErrUnsafeDirective):
+		code = "unsafe_markdown"
+	}
+	return diagnosticFailure("parse", code, err, nil)
+}
+
+func diagnosticFailure(stage, code string, err error, diagnostics []render.Diagnostic) error {
+	cloned := append([]render.Diagnostic(nil), diagnostics...)
+	if len(cloned) == 0 {
+		cloned = []render.Diagnostic{{Code: code, Severity: render.SeverityError, Message: err.Error()}}
+	}
+	return &DiagnosticError{Stage: stage, Code: code, Diagnostics: cloned, Err: err}
+}
+
+func normalizeLimits(input Limits) (Limits, error) {
+	if input.MaxMarkdownBytes < 0 || input.MaxNodes < 0 || input.MaxDepth < 0 {
+		return Limits{}, fmt.Errorf("%w: limits cannot be negative", ErrResourceLimit)
+	}
+	if input.MaxMarkdownBytes == 0 {
+		input.MaxMarkdownBytes = 2 << 20
+	}
+	if input.MaxNodes == 0 {
+		input.MaxNodes = 10_000
+	}
+	if input.MaxDepth == 0 {
+		input.MaxDepth = 64
+	}
+	return input, nil
+}
+
+func workspaceMarkdown(request Request, profileID, profileVersion string) ([]byte, error) {
+	if strings.TrimSpace(request.DocumentID) == "" || strings.TrimSpace(request.Title) == "" ||
+		strings.TrimSpace(request.DocumentType) == "" || strings.TrimSpace(request.Language) == "" {
+		return nil, errors.New("docgen: document ID, title, document type, and language are required")
+	}
+	if request.Mode == "" || request.FrozenAt.IsZero() || strings.TrimSpace(request.RequestedBy) == "" {
+		return nil, errors.New("docgen: mode, frozen time, and requester are required")
+	}
+	quote := func(value string) string {
+		raw, _ := json.Marshal(value)
+		return string(raw)
+	}
+	var header strings.Builder
+	header.WriteString("---\n")
+	fmt.Fprintf(&header, "documentId: %s\n", quote(request.DocumentID))
+	fmt.Fprintf(&header, "projectId: %s\n", quote(WorkspaceProjectID))
+	fmt.Fprintf(&header, "documentType: %s\n", quote(request.DocumentType))
+	fmt.Fprintf(&header, "title: %s\n", quote(request.Title))
+	fmt.Fprintf(&header, "language: %s\n", quote(request.Language))
+	fmt.Fprintf(&header, "profileId: %s\n", quote(profileID))
+	fmt.Fprintf(&header, "profileVersion: %s\n", quote(profileVersion))
+	header.WriteString("controlled: false\n---\n\n")
+	header.Write(bytes.TrimSpace(request.Markdown))
+	header.WriteByte('\n')
+	return []byte(header.String()), nil
+}
+
+func validateWorkspaceRoute(request Request, metadata markdownrenderer.Metadata) error {
+	if metadata.Controlled || metadata.ProjectID != WorkspaceProjectID {
+		return ErrRDMRequired
+	}
+	if metadata.DocumentID != request.DocumentID || metadata.DocumentType != request.DocumentType ||
+		metadata.Title != request.Title || metadata.Language != request.Language {
+		return errors.New("docgen: persisted Markdown metadata does not match the frozen request")
+	}
+	return nil
+}
+
+// profileVersionFor returns the company-default version a document renders
+// with. Published versions are immutable, so a version the persisted Markdown
+// or the request already binds is kept; only a new, unbound document takes the
+// latest published version. metadata is nil until Markdown is materialized.
+func profileVersionFor(request Request, metadata *markdownrenderer.Metadata) (string, error) {
+	requested := request.ProfileID != "" || request.ProfileVersion != ""
+	if requested && !publishedProfileVersion(request.ProfileID, request.ProfileVersion) {
+		return "", fmt.Errorf("%w: requested %s@%s is not a published %s version", ErrProfileMismatch,
+			request.ProfileID, request.ProfileVersion, defaultProfileID)
+	}
+	if metadata == nil {
+		if requested {
+			return request.ProfileVersion, nil
+		}
+		return profiles.LatestCompanyDefaultVersion, nil
+	}
+	if !publishedProfileVersion(metadata.ProfileID, metadata.ProfileVersion) {
+		return "", fmt.Errorf("%w: Markdown binds %s@%s, which is not a published %s version", ErrProfileMismatch,
+			metadata.ProfileID, metadata.ProfileVersion, defaultProfileID)
+	}
+	if requested && request.ProfileVersion != metadata.ProfileVersion {
+		return "", fmt.Errorf("%w: requested %s@%s, Markdown binds %s@%s", ErrProfileMismatch,
+			request.ProfileID, request.ProfileVersion, metadata.ProfileID, metadata.ProfileVersion)
+	}
+	return metadata.ProfileVersion, nil
+}
+
+func publishedProfileVersion(profileID, profileVersion string) bool {
+	return profileID == defaultProfileID && slices.Contains(profiles.CompanyDefaultVersions(), profileVersion)
+}
+
+func validateWorkspaceMetadata(request Request, metadata markdownrenderer.Metadata, profileID, profileVersion string) error {
+	if err := validateWorkspaceRoute(request, metadata); err != nil {
+		return err
+	}
+	if metadata.ProfileID != profileID || metadata.ProfileVersion != profileVersion {
+		return fmt.Errorf("%w: Markdown binds %s@%s, available %s@%s", ErrProfileMismatch,
+			metadata.ProfileID, metadata.ProfileVersion, profileID, profileVersion)
+	}
+	return nil
+}
+
+func artifact(name, mime string, raw []byte) Artifact {
+	sum := sha256.Sum256(raw)
+	// Callers transfer ownership of freshly produced buffers to the delivery.
+	return Artifact{Name: name, MIME: mime, SHA256: hex.EncodeToString(sum[:]), Bytes: raw}
+}
+
+func manifestArtifact(value Artifact) ManifestArtifact {
+	return ManifestArtifact{Name: value.Name, MIME: value.MIME, Size: len(value.Bytes), SHA256: value.SHA256}
+}
+
+func buildArchive(artifacts ...Artifact) ([]byte, error) {
+	items := append([]Artifact(nil), artifacts...)
+	sort.Slice(items, func(i, j int) bool { return items[i].Name < items[j].Name })
+	var buffer bytes.Buffer
+	archive := zip.NewWriter(&buffer)
+	for _, item := range items {
+		header := &zip.FileHeader{Name: item.Name, Method: zip.Deflate}
+		header.SetModTime(time.Date(1980, 1, 1, 0, 0, 0, 0, time.UTC))
+		header.SetMode(0o644)
+		writer, err := archive.CreateHeader(header)
+		if err != nil {
+			return nil, fmt.Errorf("docgen: create archive entry %s: %w", item.Name, err)
+		}
+		if _, err := writer.Write(item.Bytes); err != nil {
+			return nil, fmt.Errorf("docgen: write archive entry %s: %w", item.Name, err)
+		}
+	}
+	if err := archive.Close(); err != nil {
+		return nil, fmt.Errorf("docgen: close delivery archive: %w", err)
+	}
+	return buffer.Bytes(), nil
+}
+
+func cloneStringMap(source map[string]string) map[string]string {
+	clone := make(map[string]string, len(source))
+	for key, value := range source {
+		clone[key] = value
+	}
+	return clone
+}
+
+func safeBaseName(title string) string {
+	return strings.TrimSuffix(SuggestName(title), ".docx")
+}
+
+func contextErr(ctx context.Context) error {
+	select {
+	case <-ctx.Done():
+		return fmt.Errorf("docgen: render canceled: %w", ctx.Err())
+	default:
+		return nil
+	}
+}

internal/docgen/renderer_identity.go

@@ -0,0 +1,3 @@
+package docgen
+
+//go:generate go run ./internal/genrendereridentity

internal/docgen/renderer_identity_generated.go

@@ -0,0 +1,7 @@
+// Code generated from deps/agent-document-renderer; DO NOT EDIT.
+
+package docgen
+
+const rendererRevision = "3f259990b5d43ec0d318f39d496816140ab559b5"
+
+const RendererIdentity = "agent-document-renderer@" + rendererRevision

internal/execenv/base-requirements.txt

@@ -0,0 +1,11 @@
+python-docx
+openpyxl
+python-pptx
+lxml
+pillow
+numpy
+matplotlib
+pypdf
+reportlab
+markdown
+pdfplumber

internal/execenv/broker.go

@@ -0,0 +1,349 @@
+package execenv
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// Store 是申请与绑定的持久化。实现在 store 包，避免本包依赖数据库驱动。
+type Store interface {
+	InsertExecEnvRequest(Request) error
+	GetExecEnvRequest(id string) (Request, error)
+	ListExecEnvRequests(conversationID string, limit int) ([]Request, error)
+	UpdateExecEnvRequest(id, status, layerID, detail, approver string) error
+	GetExecEnvBinding(conversationID string) (Binding, error)
+	PutExecEnvBinding(Binding) error
+	ListExecEnvBindings() ([]Binding, error)
+	InsertExecEnvAudit(owner, action, actor, target, outcome, entry string) error
+}
+
+// Request 是一次扩展包申请。
+type Request struct {
+	ID             string `json:"id"`
+	ConversationID string `json:"conversationId"`
+	Owner          string `json:"owner"`
+	Spec           string `json:"spec"`
+	Reason         string `json:"reason"`
+	Status         string `json:"status"`
+	LayerID        string `json:"layerId"`
+	Detail         string `json:"detail"`
+	Approver       string `json:"approver"`
+	CreatedAt      string `json:"createdAt"`
+	UpdatedAt      string `json:"updatedAt"`
+}
+
+// Binding 是会话当前挂载的层。Isolated 非空时只挂隔离层，不挂基础层。
+type Binding struct {
+	ConversationID string   `json:"conversationId"`
+	BaseID         string   `json:"baseId"`
+	Extensions     []string `json:"extensions"`
+	Isolated       string   `json:"isolated"`
+	UpdatedAt      string   `json:"updatedAt"`
+}
+
+// Outcome 是工具直接回给模型的结果。
+type Outcome struct {
+	Status    string `json:"status"`
+	RequestID string `json:"requestId,omitempty"`
+	LayerID   string `json:"layerId,omitempty"`
+	Detail    string `json:"detail,omitempty"`
+}
+
+// Resolver 在宿主侧解析并下载 wheel。沙箱不实现这个接口。
+type Resolver interface {
+	Resolve(ctx context.Context, reqs []string, base Lock) (Result, error)
+	Fetch(ctx context.Context, wheelhouse string, pkg LockedPkg) (string, error)
+}
+
+// Broker 在宿主侧解析、分级、构建。沙箱不调用它的构建路径。
+type Broker struct {
+	Root  *Root
+	Store Store
+	Pip   Resolver
+	Now   func() time.Time
+}
+
+func NewBroker(root *Root, st Store, pip Resolver) *Broker {
+	return &Broker{Root: root, Store: st, Pip: pip, Now: time.Now}
+}
+
+// StatusText 给模型看的紧凑状态。
+func (b *Broker) StatusText(conv string) (string, error) {
+	var buf strings.Builder
+	baseID, err := b.Root.CurrentBase()
+	if err != nil {
+		return "", err
+	}
+	if baseID == "" {
+		buf.WriteString("基础层：未建立（需要 agent-system env ensure）\n")
+	} else {
+		lock, err := b.Root.ReadLock(baseID)
+		if err != nil {
+			return "", err
+		}
+		buf.WriteString("基础层：" + baseID + "\n")
+		for _, p := range lock.Packages {
+			fmt.Fprintf(&buf, "- %s==%s\n", p.Name, p.Version)
+		}
+	}
+	if conv != "" && b.Store != nil {
+		bind, err := b.Store.GetExecEnvBinding(conv)
+		if err != nil {
+			return "", err
+		}
+		if bind.Isolated != "" {
+			fmt.Fprintf(&buf, "本会话隔离层：%s\n", bind.Isolated)
+		} else if len(bind.Extensions) > 0 {
+			fmt.Fprintf(&buf, "本会话扩展层：%s\n", strings.Join(bind.Extensions, ", "))
+		} else {
+			buf.WriteString("本会话扩展层：无\n")
+		}
+		reqs, err := b.Store.ListExecEnvRequests(conv, 10)
+		if err != nil {
+			return "", err
+		}
+		for _, r := range reqs {
+			if r.Status == "ready" || r.Status == "rejected" || r.Status == "failed" {
+				continue
+			}
+			fmt.Fprintf(&buf, "申请 %s 状态 %s %s\n", r.ID, r.Status, r.Detail)
+		}
+	}
+	return buf.String(), nil
+}
+
+// RequestPackages 解析并按分级处理。wheelPath 非空表示用户上传的 wheel，一律待审批。
+func (b *Broker) RequestPackages(ctx context.Context, conv, owner, reason string, packages []string, wheelPath string) (Outcome, error) {
+	if b.Store == nil {
+		return Outcome{}, errors.New("execenv: store is not configured")
+	}
+	baseID, err := b.Root.CurrentBase()
+	if err != nil {
+		return Outcome{}, err
+	}
+	var base Lock
+	if baseID != "" {
+		base, err = b.Root.ReadLock(baseID)
+		if err != nil {
+			return Outcome{}, err
+		}
+	}
+	cat, err := b.Root.LoadCatalog()
+	if err != nil {
+		return Outcome{}, err
+	}
+	var res Result
+	uploaded := wheelPath != ""
+	if uploaded {
+		pkg, err := b.stageUpload(wheelPath)
+		if err != nil {
+			return Outcome{}, err
+		}
+		res.Packages = []LockedPkg{pkg}
+	} else if len(packages) == 0 {
+		return Outcome{}, errors.New("execenv: packages or wheel required")
+	} else {
+		res, err = b.Pip.Resolve(ctx, packages, base)
+		if err != nil {
+			return Outcome{}, err
+		}
+	}
+	grade, detail := grade(cat, res, uploaded)
+	specRaw, _ := json.Marshal(map[string]any{"packages": packages, "wheel": wheelPath, "resolved": res.Packages})
+	rec := Request{
+		ID: newID("env"), ConversationID: conv, Owner: owner,
+		Spec: string(specRaw), Reason: reason, Status: grade, Detail: detail,
+		CreatedAt: b.now(), UpdatedAt: b.now(),
+	}
+	if err := b.Store.InsertExecEnvRequest(rec); err != nil {
+		return Outcome{}, err
+	}
+	_ = b.Store.InsertExecEnvAudit(owner, "execenv.request", owner, rec.ID, grade, detail)
+	switch grade {
+	case "rejected":
+		return Outcome{Status: "rejected", RequestID: rec.ID, Detail: detail}, nil
+	case "pending_approval":
+		return Outcome{Status: "pending_approval", RequestID: rec.ID, Detail: detail}, nil
+	default:
+		id, err := b.materialize(ctx, conv, owner, base, res, false)
+		if err != nil {
+			_ = b.Store.UpdateExecEnvRequest(rec.ID, "failed", "", err.Error(), "")
+			return Outcome{Status: "failed", RequestID: rec.ID, Detail: err.Error()}, nil
+		}
+		_ = b.Store.UpdateExecEnvRequest(rec.ID, "ready", id, "已绑定", "auto")
+		return Outcome{Status: "ready", RequestID: rec.ID, LayerID: id, Detail: "已绑定，下一次 run_python 即可导入"}, nil
+	}
+}
+
+func grade(cat Catalog, res Result, uploaded bool) (status, detail string) {
+	if len(res.Denied) > 0 || hasDenied(cat, res) {
+		return "rejected", "命中黑名单：" + strings.Join(deniedNames(cat, res), ", ")
+	}
+	if len(res.SDist) > 0 {
+		return "rejected", "只有源码包，拒绝执行构建脚本：" + strings.Join(res.SDist, ", ")
+	}
+	if len(res.Missing) > 0 {
+		return "rejected", "解析失败：" + strings.Join(res.Missing, "; ")
+	}
+	if len(res.Packages) == 0 && len(res.Override) == 0 {
+		return "rejected", "没有需要安装的新包（基础层已满足，或规格为空）"
+	}
+	var why []string
+	if uploaded {
+		why = append(why, "用户上传的 wheel")
+	}
+	if len(res.Override) > 0 {
+		why = append(why, strings.Join(res.Override, "; "))
+	}
+	for _, p := range res.Packages {
+		if !cat.allowed(p.Name) {
+			why = append(why, p.Name+" 不在白名单")
+		}
+		if cat.MaxWheelBytes > 0 && p.Size > cat.MaxWheelBytes {
+			why = append(why, fmt.Sprintf("%s 体积 %d 超过上限", p.Name, p.Size))
+		}
+		if p.SHA256 == "" && !uploaded {
+			why = append(why, p.Name+" 缺少哈希")
+		}
+	}
+	if len(why) > 0 {
+		return "pending_approval", strings.Join(why, "；")
+	}
+	return "approved", "白名单内自动批准"
+}
+
+func hasDenied(cat Catalog, res Result) bool {
+	return len(deniedNames(cat, res)) > 0
+}
+
+func deniedNames(cat Catalog, res Result) []string {
+	var out []string
+	for _, p := range res.Packages {
+		if cat.denied(p.Name) {
+			out = append(out, p.Name)
+		}
+	}
+	return out
+}
+
+// Decide 处理审批。isolate 仅在申请确实与基础层冲突时建立隔离层。
+func (b *Broker) Decide(ctx context.Context, id, actor string, admin, allow, isolate bool) (Outcome, error) {
+	rec, err := b.Store.GetExecEnvRequest(id)
+	if err != nil {
+		return Outcome{}, err
+	}
+	if rec.Status != "pending_approval" {
+		return Outcome{}, fmt.Errorf("execenv: request %s is %s", id, rec.Status)
+	}
+	if !admin && actor != rec.Owner {
+		return Outcome{}, errors.New("execenv: only the session owner or an admin can decide")
+	}
+	if !allow {
+		if err := b.Store.UpdateExecEnvRequest(id, "rejected", "", "已拒绝", actor); err != nil {
+			return Outcome{}, err
+		}
+		_ = b.Store.InsertExecEnvAudit(rec.Owner, "execenv.decide", actor, id, "rejected", "")
+		return Outcome{Status: "rejected", RequestID: id, Detail: "已拒绝"}, nil
+	}
+	var spec struct {
+		Packages []string    `json:"packages"`
+		Resolved []LockedPkg `json:"resolved"`
+	}
+	_ = json.Unmarshal([]byte(rec.Spec), &spec)
+	baseID, err := b.Root.CurrentBase()
+	if err != nil {
+		return Outcome{}, err
+	}
+	var base Lock
+	if baseID != "" {
+		base, err = b.Root.ReadLock(baseID)
+		if err != nil {
+			return Outcome{}, err
+		}
+	}
+	var res Result
+	if isolate {
+		// 隔离层不继承基础层约束，整份闭包单独成层。
+		res, err = b.Pip.Resolve(ctx, spec.Packages, Lock{})
+		if err != nil {
+			return Outcome{}, err
+		}
+	} else if len(spec.Resolved) > 0 {
+		res.Packages = spec.Resolved
+	} else if len(spec.Packages) > 0 {
+		res, err = b.Pip.Resolve(ctx, spec.Packages, base)
+		if err != nil {
+			return Outcome{}, err
+		}
+	}
+	if len(res.Override) > 0 && !isolate {
+		msg := "与基础层版本冲突，批准时需要选择隔离层：" + strings.Join(res.Override, "; ")
+		_ = b.Store.UpdateExecEnvRequest(id, "pending_approval", "", msg, "")
+		return Outcome{Status: "pending_approval", RequestID: id, Detail: msg}, nil
+	}
+	layer, err := b.materialize(ctx, rec.ConversationID, rec.Owner, base, res, isolate)
+	if err != nil {
+		_ = b.Store.UpdateExecEnvRequest(id, "failed", "", err.Error(), actor)
+		return Outcome{Status: "failed", RequestID: id, Detail: err.Error()}, nil
+	}
+	if err := b.Store.UpdateExecEnvRequest(id, "ready", layer, "已批准并绑定", actor); err != nil {
+		return Outcome{}, err
+	}
+	_ = b.Store.InsertExecEnvAudit(rec.Owner, "execenv.decide", actor, id, "ready", layer)
+	return Outcome{Status: "ready", RequestID: id, LayerID: layer, Detail: "已批准并绑定"}, nil
+}
+
+func (b *Broker) now() string { return b.Now().UTC().Format(time.RFC3339Nano) }
+
+func newID(prefix string) string {
+	var buf [8]byte
+	_, _ = rand.Read(buf[:])
+	return prefix + "_" + hex.EncodeToString(buf[:])
+}
+
+func (b *Broker) stageUpload(path string) (LockedPkg, error) {
+	if filepath.Ext(path) != ".whl" {
+		return LockedPkg{}, errors.New("execenv: upload must be a .whl")
+	}
+	f, err := os.Open(path)
+	if err != nil {
+		return LockedPkg{}, err
+	}
+	defer f.Close()
+	sum := sha256New()
+	n, err := io.Copy(sum, f)
+	if err != nil {
+		return LockedPkg{}, err
+	}
+	sha := sum.Sum()
+	dest := filepath.Join(b.Root.Wheelhouse(), sha+".whl")
+	if _, err := os.Stat(dest); err != nil {
+		in, err := os.Open(path)
+		if err != nil {
+			return LockedPkg{}, err
+		}
+		defer in.Close()
+		out, err := os.OpenFile(dest, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0o644)
+		if err != nil && !errors.Is(err, os.ErrExist) {
+			return LockedPkg{}, err
+		}
+		if err == nil {
+			if _, err := io.Copy(out, in); err != nil {
+				out.Close()
+				return LockedPkg{}, err
+			}
+			out.Close()
+		}
+	}
+	name := strings.Split(filepath.Base(path), "-")[0]
+	return LockedPkg{Name: name, Version: "0", Filename: filepath.Base(path), SHA256: sha, Size: n}, nil
+}

internal/execenv/broker_test.go

@@ -0,0 +1,171 @@
+package execenv
+
+import (
+	"archive/zip"
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+type memStore struct {
+	reqs map[string]Request
+	bind map[string]Binding
+}
+
+func newMem() *memStore { return &memStore{reqs: map[string]Request{}, bind: map[string]Binding{}} }
+
+func (m *memStore) InsertExecEnvRequest(r Request) error {
+	m.reqs[r.ID] = r
+	return nil
+}
+func (m *memStore) GetExecEnvRequest(id string) (Request, error) { return m.reqs[id], nil }
+func (m *memStore) ListExecEnvRequests(conv string, limit int) ([]Request, error) {
+	var out []Request
+	for _, r := range m.reqs {
+		if conv == "" || r.ConversationID == conv {
+			out = append(out, r)
+		}
+	}
+	return out, nil
+}
+func (m *memStore) UpdateExecEnvRequest(id, status, layerID, detail, approver string) error {
+	r := m.reqs[id]
+	r.Status, r.LayerID, r.Detail, r.Approver = status, layerID, detail, approver
+	m.reqs[id] = r
+	return nil
+}
+func (m *memStore) GetExecEnvBinding(conv string) (Binding, error) { return m.bind[conv], nil }
+func (m *memStore) PutExecEnvBinding(b Binding) error {
+	m.bind[b.ConversationID] = b
+	return nil
+}
+func (m *memStore) ListExecEnvBindings() ([]Binding, error) {
+	var out []Binding
+	for _, b := range m.bind {
+		out = append(out, b)
+	}
+	return out, nil
+}
+func (m *memStore) InsertExecEnvAudit(string, string, string, string, string, string) error {
+	return nil
+}
+
+type scripted struct{ byReq map[string]Result }
+
+func (s scripted) Resolve(_ context.Context, reqs []string, _ Lock) (Result, error) {
+	if len(reqs) == 0 {
+		return Result{}, nil
+	}
+	return s.byReq[reqs[0]], nil
+}
+func (s scripted) Fetch(context.Context, string, LockedPkg) (string, error) {
+	return "", os.ErrNotExist
+}
+
+func TestConversationsGetDistinctLayers(t *testing.T) {
+	root, err := Open(t.TempDir())
+	if err != nil {
+		t.Fatal(err)
+	}
+	cat := DefaultCatalog()
+	cat.Allow = append(cat.Allow, CatalogEntry{Name: "foo", Reason: "test"})
+	raw, _ := json.Marshal(cat)
+	if err := os.WriteFile(root.CatalogPath(), raw, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	baseSum := placeWheel(t, root, "bar.py")
+	baseID, err := root.BuildLayer(Lock{
+		Schema: 1, Kind: "base", PythonTag: "cp314", Platform: "any",
+		Packages: []LockedPkg{{Name: "bar", Version: "1", Filename: baseSum + ".whl", SHA256: baseSum}},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := root.SwitchCurrent(baseID); err != nil {
+		t.Fatal(err)
+	}
+	sum1 := placeWheel(t, root, "foo1.py")
+	sum2 := placeWheel(t, root, "foo2.py")
+	broker := NewBroker(root, newMem(), scripted{byReq: map[string]Result{
+		"foo==1": {Packages: []LockedPkg{{Name: "foo", Version: "1", Filename: sum1 + ".whl", SHA256: sum1}}},
+		"foo==2": {Packages: []LockedPkg{{Name: "foo", Version: "2", Filename: sum2 + ".whl", SHA256: sum2}}},
+	}})
+	a, err := broker.RequestPackages(context.Background(), "conv-a", "owner", "need 1", []string{"foo==1"}, "")
+	if err != nil || a.Status != "ready" {
+		t.Fatalf("A: %+v %v", a, err)
+	}
+	b, err := broker.RequestPackages(context.Background(), "conv-b", "owner", "need 2", []string{"foo==2"}, "")
+	if err != nil || b.Status != "ready" {
+		t.Fatalf("B: %+v %v", b, err)
+	}
+	if a.LayerID == b.LayerID {
+		t.Fatalf("layers should differ: %s", a.LayerID)
+	}
+	cur, err := root.CurrentBase()
+	if err != nil || cur != baseID {
+		t.Fatalf("base changed: %s -> %s (%v)", baseID, cur, err)
+	}
+	extraA, isoA := broker.LayersFor("conv-a")
+	extraB, isoB := broker.LayersFor("conv-b")
+	if isoA != "" || isoB != "" || len(extraA) != 1 || len(extraB) != 1 || extraA[0] == extraB[0] {
+		t.Fatalf("mounts A=%v %s B=%v %s", extraA, isoA, extraB, isoB)
+	}
+}
+
+func TestRequestGrades(t *testing.T) {
+	root, err := Open(t.TempDir())
+	if err != nil {
+		t.Fatal(err)
+	}
+	broker := NewBroker(root, newMem(), scripted{byReq: map[string]Result{
+		"onlysrc": {SDist: []string{"onlysrc"}},
+		"secret":  {Packages: []LockedPkg{{Name: "secret", Version: "1", SHA256: "abc"}}},
+	}})
+	sdist, err := broker.RequestPackages(context.Background(), "c", "o", "", []string{"onlysrc"}, "")
+	if err != nil || sdist.Status != "rejected" {
+		t.Fatalf("sdist: %+v %v", sdist, err)
+	}
+	outside, err := broker.RequestPackages(context.Background(), "c", "o", "", []string{"secret"}, "")
+	if err != nil || outside.Status != "pending_approval" {
+		t.Fatalf("allowlist: %+v %v", outside, err)
+	}
+}
+
+func placeWheel(t *testing.T, root *Root, member string) string {
+	t.Helper()
+	buf := &bytes.Buffer{}
+	zw := zip.NewWriter(buf)
+	f, err := zw.Create(member)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := f.Write([]byte("x = 1\n")); err != nil {
+		t.Fatal(err)
+	}
+	if err := zw.Close(); err != nil {
+		t.Fatal(err)
+	}
+	sum := sha256.Sum256(buf.Bytes())
+	hexSum := hex.EncodeToString(sum[:])
+	if err := os.WriteFile(filepath.Join(root.Wheelhouse(), hexSum+".whl"), buf.Bytes(), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	return hexSum
+}
+
+func osWriteWheel(path, member string) error {
+	buf := &bytes.Buffer{}
+	zw := zip.NewWriter(buf)
+	if _, err := zw.Create(member); err != nil {
+		return err
+	}
+	if err := zw.Close(); err != nil {
+		return err
+	}
+	return os.WriteFile(path, buf.Bytes(), 0o644)
+}

internal/execenv/catalog.go

@@ -0,0 +1,77 @@
+package execenv
+
+import (
+	"encoding/json"
+	"os"
+)
+
+// Catalog 是管理员可编辑的白名单。不在白名单里的包不会自动安装。
+type Catalog struct {
+	MaxWheelBytes int64          `json:"maxWheelBytes"`
+	Allow         []CatalogEntry `json:"allow"`
+	Deny          []string       `json:"deny"`
+}
+
+// CatalogEntry 的 Spec 为空表示任意版本；非空时是给人类看的范围说明，
+// 自动批准只看包名是否在列，版本冲突另由基础层锁判定。
+type CatalogEntry struct {
+	Name   string `json:"name"`
+	Spec   string `json:"spec,omitempty"`
+	Reason string `json:"reason,omitempty"`
+}
+
+// DefaultCatalog 是第一次创建环境根时落下的名单。之后以磁盘上的 catalog.json 为准。
+func DefaultCatalog() Catalog {
+	return Catalog{
+		MaxWheelBytes: 80 << 20,
+		Allow: []CatalogEntry{
+			{Name: "python-docx", Reason: "Word 交付物"},
+			{Name: "openpyxl", Reason: "Excel"},
+			{Name: "python-pptx", Reason: "PPT"},
+			{Name: "lxml", Reason: "OOXML"},
+			{Name: "pillow", Reason: "图片"},
+			{Name: "numpy", Reason: "数值"},
+			{Name: "matplotlib", Reason: "图表"},
+			{Name: "pypdf", Reason: "PDF 读取"},
+			{Name: "reportlab", Reason: "PDF 生成"},
+			{Name: "markdown", Reason: "Markdown"},
+			{Name: "pdfplumber", Reason: "PDF 抽取"},
+		},
+		Deny: []string{"setuptools", "pip"},
+	}
+}
+
+func (r *Root) LoadCatalog() (Catalog, error) {
+	raw, err := os.ReadFile(r.CatalogPath())
+	if err != nil {
+		return Catalog{}, err
+	}
+	var c Catalog
+	if err := json.Unmarshal(raw, &c); err != nil {
+		return Catalog{}, err
+	}
+	if c.MaxWheelBytes <= 0 {
+		c.MaxWheelBytes = 80 << 20
+	}
+	return c, nil
+}
+
+func (c Catalog) allowed(name string) bool {
+	n := normName(name)
+	for _, e := range c.Allow {
+		if normName(e.Name) == n {
+			return true
+		}
+	}
+	return false
+}
+
+func (c Catalog) denied(name string) bool {
+	n := normName(name)
+	for _, d := range c.Deny {
+		if normName(d) == n {
+			return true
+		}
+	}
+	return false
+}

internal/execenv/doctor.go

@@ -0,0 +1,97 @@
+package execenv
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+// Doctor 用给定解释器导入模块。sandbox 为真且系统有 bwrap 时，按与执行后端相同的隔离方式跑。
+func Doctor(ctx context.Context, python string, pyPath []string, modules []string, sandbox bool, mounts []string) error {
+	if python == "" {
+		return fmt.Errorf("execenv: doctor: python is empty")
+	}
+	if len(modules) == 0 {
+		modules = []string{"docx", "openpyxl", "pptx"}
+	}
+	script := "import " + strings.Join(modules, ", ")
+	if !sandbox {
+		cmd := exec.CommandContext(ctx, python, "-c", script)
+		cmd.Env = doctorEnv(pyPath)
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			return fmt.Errorf("execenv: doctor: %v: %s", err, trim(out))
+		}
+		return nil
+	}
+	bwrap, err := exec.LookPath("bwrap")
+	if err != nil {
+		return fmt.Errorf("execenv: doctor: sandbox requested but bwrap is missing: %w", err)
+	}
+	argv := []string{"--unshare-all", "--die-with-parent", "--ro-bind", "/", "/", "--tmpfs", "/home", "--tmpfs", "/tmp", "--proc", "/proc", "--dev", "/dev"}
+	for _, m := range mounts {
+		if m == "" {
+			continue
+		}
+		argv = append(argv, "--ro-bind", m, m)
+	}
+	argv = append(argv, "--clearenv")
+	for _, kv := range doctorEnv(pyPath) {
+		if i := strings.IndexByte(kv, '='); i > 0 {
+			argv = append(argv, "--setenv", kv[:i], kv[i+1:])
+		}
+	}
+	argv = append(argv, python, "-c", script)
+	cmd := exec.CommandContext(ctx, bwrap, argv...)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("execenv: doctor sandbox: %v: %s", err, trim(out))
+	}
+	return nil
+}
+
+func doctorEnv(pyPath []string) []string {
+	env := []string{
+		"PATH=/usr/local/bin:/usr/bin:/bin",
+		"PYTHONDONTWRITEBYTECODE=1",
+		"PIP_NO_INDEX=1",
+	}
+	if len(pyPath) > 0 {
+		env = append(env, "PYTHONPATH="+strings.Join(pyPath, string(os.PathListSeparator)))
+	}
+	return env
+}
+
+func trim(b []byte) string {
+	s := string(bytes.TrimSpace(b))
+	if len(s) > 500 {
+		s = s[:500]
+	}
+	return s
+}
+
+// EnsurePython 优先下载独立 CPython；失败则用系统 python 建一份 venv。
+func (r *Root) EnsurePython(ctx context.Context) (string, error) {
+	if bin, ok := r.PythonBin(); ok {
+		return bin, nil
+	}
+	pctx, cancel := context.WithTimeout(ctx, 4*time.Minute)
+	defer cancel()
+	if err := r.InstallStandalone(pctx, ""); err == nil {
+		if bin, ok := r.PythonBin(); ok {
+			return bin, nil
+		}
+	}
+	if err := r.BootstrapVenv("/usr/bin/python3"); err != nil {
+		return "", err
+	}
+	bin, ok := r.PythonBin()
+	if !ok {
+		return "", fmt.Errorf("execenv: managed python missing after bootstrap")
+	}
+	return bin, nil
+}

internal/execenv/gc.go

@@ -0,0 +1,61 @@
+package execenv
+
+import (
+	"os"
+	"path/filepath"
+	"time"
+)
+
+// GC 删除未被 current、绑定或锁引用、且早于 ttl 的层目录。ttl<=0 时用 7 天。
+func (b *Broker) GC(ttl time.Duration) ([]string, error) {
+	if ttl <= 0 {
+		ttl = 7 * 24 * time.Hour
+	}
+	keep := map[string]bool{}
+	if id, err := b.Root.CurrentBase(); err != nil {
+		return nil, err
+	} else if id != "" {
+		keep[id] = true
+	}
+	if b.Store != nil {
+		binds, err := b.Store.ListExecEnvBindings()
+		if err != nil {
+			return nil, err
+		}
+		for _, bind := range binds {
+			if bind.BaseID != "" {
+				keep[bind.BaseID] = true
+			}
+			if bind.Isolated != "" {
+				keep[bind.Isolated] = true
+			}
+			for _, id := range bind.Extensions {
+				keep[id] = true
+			}
+		}
+	}
+	ents, err := os.ReadDir(b.Root.LayersDir())
+	if err != nil {
+		return nil, err
+	}
+	cut := time.Now().Add(-ttl)
+	var removed []string
+	for _, ent := range ents {
+		if !ent.IsDir() || keep[ent.Name()] {
+			continue
+		}
+		info, err := ent.Info()
+		if err != nil {
+			return removed, err
+		}
+		if info.ModTime().After(cut) {
+			continue
+		}
+		if err := os.RemoveAll(filepath.Join(b.Root.LayersDir(), ent.Name())); err != nil {
+			return removed, err
+		}
+		_ = os.Remove(filepath.Join(b.Root.LocksDir(), ent.Name()+".json"))
+		removed = append(removed, ent.Name())
+	}
+	return removed, nil
+}

internal/execenv/hashio.go

@@ -0,0 +1,20 @@
+package execenv
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"hash"
+	"io"
+)
+
+type shaWriter struct{ h hash.Hash }
+
+func sha256New() shaWriter { return shaWriter{h: sha256.New()} }
+
+func (s shaWriter) Sum() string { return hex.EncodeToString(s.h.Sum(nil)) }
+
+// Write 满足 io.Writer，便于 fileSHA256 之外的流式哈希。
+func (s shaWriter) Write(p []byte) (int, error) { return s.h.Write(p) }
+
+// 确认 shaWriter 可传给 io.Copy。
+var _ io.Writer = shaWriter{}

internal/execenv/lock.go

@@ -0,0 +1,62 @@
+package execenv
+
+import (
+	"encoding/json"
+	"sort"
+	"strings"
+)
+
+// Lock 是一层的不可变清单。ID 由规范 JSON 决定，与写盘时的空白无关。
+type Lock struct {
+	Schema    int         `json:"schema"`
+	Kind      string      `json:"kind"` // base | extension | isolated
+	PythonTag string      `json:"pythonTag"`
+	Platform  string      `json:"platform"`
+	BaseID    string      `json:"baseId,omitempty"`
+	Packages  []LockedPkg `json:"packages"`
+}
+
+// LockedPkg 是一个 wheel。SHA256 是文件字节的哈希，不是文件名。
+type LockedPkg struct {
+	Name     string `json:"name"`
+	Version  string `json:"version"`
+	Filename string `json:"filename"`
+	SHA256   string `json:"sha256"`
+	Size     int64  `json:"size,omitempty"`
+}
+
+// ID 返回 base-<hash> / x-<hash> / iso-<hash>。
+func (l Lock) ID() string {
+	canon := l
+	canon.Packages = append([]LockedPkg(nil), l.Packages...)
+	sort.Slice(canon.Packages, func(i, j int) bool {
+		return normName(canon.Packages[i].Name) < normName(canon.Packages[j].Name)
+	})
+	raw, _ := json.Marshal(canon)
+	sum := HashBytes(raw)
+	prefix := "x-"
+	switch l.Kind {
+	case "base":
+		prefix = "base-"
+	case "isolated":
+		prefix = "iso-"
+	}
+	return prefix + sum[:16]
+}
+
+func normName(name string) string {
+	var b strings.Builder
+	prevDash := false
+	for _, r := range strings.ToLower(name) {
+		if r == '-' || r == '_' || r == '.' {
+			if !prevDash && b.Len() > 0 {
+				b.WriteByte('-')
+				prevDash = true
+			}
+			continue
+		}
+		prevDash = false
+		b.WriteRune(r)
+	}
+	return strings.Trim(b.String(), "-")
+}

internal/execenv/materialize.go

@@ -0,0 +1,206 @@
+package execenv
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"time"
+)
+
+func (b *Broker) materialize(ctx context.Context, conv, owner string, base Lock, res Result, isolate bool) (string, error) {
+	pkgs := append([]LockedPkg(nil), res.Packages...)
+	for i := range pkgs {
+		if pkgs[i].SHA256 == "" || !wheelExists(b.Root, pkgs[i]) {
+			path, err := b.Pip.Fetch(ctx, b.Root.Wheelhouse(), pkgs[i])
+			if err != nil {
+				return "", err
+			}
+			sum, err := fileSHA256(path)
+			if err != nil {
+				return "", err
+			}
+			if pkgs[i].SHA256 != "" && sum != pkgs[i].SHA256 {
+				return "", fmt.Errorf("execenv: hash mismatch for %s", pkgs[i].Name)
+			}
+			pkgs[i].SHA256 = sum
+			pkgs[i].Filename = pkgs[i].SHA256 + ".whl"
+			stable := b.Root.Wheelhouse() + "/" + pkgs[i].Filename
+			if path != stable {
+				if err := os.Rename(path, stable); err != nil && !errors.Is(err, os.ErrExist) {
+					// Fetch 可能已经改名。忽略已就位的文件。
+					if _, statErr := os.Stat(stable); statErr != nil {
+						return "", err
+					}
+				}
+			}
+		}
+	}
+	kind := "extension"
+	baseID := ""
+	if id, _ := b.Root.CurrentBase(); id != "" {
+		baseID = id
+	}
+	lockPkgs := pkgs
+	if isolate {
+		kind = "isolated"
+	} else if baseID == "" {
+		kind = "base"
+	}
+	if !isolate && baseID != "" {
+		lockPkgs = res.Packages
+	}
+	lock := Lock{
+		Schema: 1, Kind: kind, PythonTag: base.PythonTag, Platform: base.Platform,
+		BaseID: baseID, Packages: lockPkgs,
+	}
+	if lock.PythonTag == "" {
+		lock.PythonTag = "cp314"
+	}
+	if lock.Platform == "" {
+		lock.Platform = "any"
+	}
+	id, err := b.Root.BuildLayer(lock)
+	if err != nil {
+		return "", err
+	}
+	if kind == "base" {
+		if err := b.Root.SwitchCurrent(id); err != nil {
+			return "", err
+		}
+		return id, nil
+	}
+	bind, err := b.Store.GetExecEnvBinding(conv)
+	if err != nil {
+		return "", err
+	}
+	bind.ConversationID = conv
+	bind.BaseID = baseID
+	bind.UpdatedAt = b.now()
+	if isolate {
+		bind.Isolated = id
+		bind.Extensions = nil
+	} else {
+		bind.Isolated = ""
+		bind.Extensions = appendUnique(bind.Extensions, id)
+	}
+	if err := b.Store.PutExecEnvBinding(bind); err != nil {
+		return "", err
+	}
+	_ = owner
+	return id, nil
+}
+
+func wheelExists(r *Root, pkg LockedPkg) bool {
+	if pkg.SHA256 == "" {
+		return false
+	}
+	_, err := os.Stat(r.Wheelhouse() + "/" + pkg.SHA256 + ".whl")
+	return err == nil
+}
+
+func appendUnique(ss []string, id string) []string {
+	for _, s := range ss {
+		if s == id {
+			return ss
+		}
+	}
+	return append(ss, id)
+}
+
+// LayersFor 返回本次执行要挂载的 site-packages。isolated 非空时调用方不要再挂基础层。
+func (b *Broker) LayersFor(conv string) (extra []string, isolated string) {
+	if b.Store == nil || conv == "" {
+		return nil, ""
+	}
+	bind, err := b.Store.GetExecEnvBinding(conv)
+	if err != nil {
+		return nil, ""
+	}
+	if bind.Isolated != "" {
+		return nil, b.Root.LayerDir(bind.Isolated)
+	}
+	for _, id := range bind.Extensions {
+		extra = append(extra, b.Root.LayerDir(id))
+	}
+	return extra, ""
+}
+
+// Wait 轮询申请直到终态或超时。
+func (b *Broker) Wait(ctx context.Context, id string, timeout time.Duration) (Outcome, error) {
+	deadline := time.Now().Add(timeout)
+	if timeout <= 0 {
+		deadline = time.Now().Add(2 * time.Minute)
+	}
+	for {
+		rec, err := b.Store.GetExecEnvRequest(id)
+		if err != nil {
+			return Outcome{}, err
+		}
+		switch rec.Status {
+		case "ready", "rejected", "failed":
+			return Outcome{Status: rec.Status, RequestID: id, LayerID: rec.LayerID, Detail: rec.Detail}, nil
+		}
+		if time.Now().After(deadline) || ctx.Err() != nil {
+			return Outcome{Status: rec.Status, RequestID: id, Detail: "仍在等待审批或构建"}, nil
+		}
+		select {
+		case <-ctx.Done():
+			return Outcome{Status: rec.Status, RequestID: id, Detail: "等待被取消"}, nil
+		case <-time.After(200 * time.Millisecond):
+		}
+	}
+}
+
+// EnsureBase 解析基础层需求并建立 current。已有 current 时直接返回其 ID。
+func (b *Broker) EnsureBase(ctx context.Context) (string, error) {
+	if id, err := b.Root.CurrentBase(); err != nil {
+		return "", err
+	} else if id != "" {
+		return id, nil
+	}
+	res, err := b.Pip.Resolve(ctx, BaseRequirements(), Lock{})
+	if err != nil {
+		return "", err
+	}
+	if !res.OK() {
+		return "", fmt.Errorf("execenv: base resolve: override=%v sdist=%v missing=%v", res.Override, res.SDist, res.Missing)
+	}
+	return b.materialize(ctx, "", "", Lock{Kind: "base"}, res, false)
+}
+
+// Rebase 强制按当前需求重建基础层并移动 current。已有会话绑定保持旧 ID。
+func (b *Broker) Rebase(ctx context.Context) (string, error) {
+	res, err := b.Pip.Resolve(ctx, BaseRequirements(), Lock{})
+	if err != nil {
+		return "", err
+	}
+	if !res.OK() {
+		return "", fmt.Errorf("execenv: rebase: override=%v sdist=%v missing=%v", res.Override, res.SDist, res.Missing)
+	}
+	lock := Lock{Schema: 1, Kind: "base", PythonTag: "cp314", Platform: "any", Packages: res.Packages}
+	for i := range lock.Packages {
+		path, err := b.Pip.Fetch(ctx, b.Root.Wheelhouse(), lock.Packages[i])
+		if err != nil {
+			return "", err
+		}
+		sum, err := fileSHA256(path)
+		if err != nil {
+			return "", err
+		}
+		lock.Packages[i].SHA256 = sum
+		lock.Packages[i].Filename = sum + ".whl"
+		stable := b.Root.Wheelhouse() + "/" + sum + ".whl"
+		if path != stable {
+			_ = os.Rename(path, stable)
+		}
+	}
+	id, err := b.Root.BuildLayer(lock)
+	if err != nil {
+		return "", err
+	}
+	if err := b.Root.SwitchCurrent(id); err != nil {
+		return "", err
+	}
+	return id, nil
+}

internal/execenv/pip.go

@@ -0,0 +1,189 @@
+package execenv
+
+import (
+	"bytes"
+	"context"
+	_ "embed"
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+//go:embed base-requirements.txt
+var baseRequirements string
+
+// BaseRequirements 是基础层的包名清单（不带版本；版本由第一次解析锁定）。
+func BaseRequirements() []string {
+	var out []string
+	for _, line := range strings.Split(baseRequirements, "\n") {
+		line = strings.TrimSpace(line)
+		if line != "" && !strings.HasPrefix(line, "#") {
+			out = append(out, line)
+		}
+	}
+	return out
+}
+
+// Pip 用宿主侧的 pip 下载 wheel。它不在沙箱里运行。
+type Pip struct {
+	Python string // 带 pip 的解释器
+}
+
+func (p Pip) python() string {
+	if p.Python != "" {
+		return p.Python
+	}
+	return "python3"
+}
+
+// Resolve 以基础层锁为 constraints 做 dry-run。冲突记入 Override，不改锁。
+func (p Pip) Resolve(ctx context.Context, reqs []string, base Lock) (Result, error) {
+	if len(reqs) == 0 {
+		return Result{}, nil
+	}
+	dir, err := os.MkdirTemp("", "execenv-resolve-")
+	if err != nil {
+		return Result{}, err
+	}
+	defer os.RemoveAll(dir)
+	cons := filepath.Join(dir, "constraints.txt")
+	if err := os.WriteFile(cons, []byte(constraintText(base)), 0o644); err != nil {
+		return Result{}, err
+	}
+	// --report 写文件。写到 stdout 时 pip 仍把 Collecting / Would install 打在同一条流上，JSON 解析会失败。
+	report := filepath.Join(dir, "report.json")
+	args := []string{"-m", "pip", "install", "--dry-run", "--report", report, "--only-binary=:all:", "--constraint", cons}
+	args = append(args, reqs...)
+	cmd := exec.CommandContext(ctx, p.python(), args...)
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	err = cmd.Run()
+	text := stderr.String() + stdout.String()
+	if err != nil {
+		if strings.Contains(text, "ResolutionImpossible") || strings.Contains(text, "conflicting") {
+			return Result{Override: []string{firstLine(text)}}, nil
+		}
+		if strings.Contains(text, "only-binary") || strings.Contains(text, "No matching distribution") {
+			return Result{SDist: reqs, Missing: []string{firstLine(text)}}, nil
+		}
+		return Result{}, fmt.Errorf("execenv: pip resolve: %v: %s", err, firstLine(text))
+	}
+	raw, err := os.ReadFile(report)
+	if err != nil {
+		return Result{}, fmt.Errorf("execenv: pip report: %w", err)
+	}
+	return parsePipReport(raw, base)
+}
+
+func parsePipReport(raw []byte, base Lock) (Result, error) {
+	var doc struct {
+		Install []struct {
+			Metadata struct {
+				Name    string `json:"name"`
+				Version string `json:"version"`
+			} `json:"metadata"`
+			DownloadInfo struct {
+				ArchiveInfo struct {
+					Hash string `json:"hash"`
+				} `json:"archive_info"`
+				URL string `json:"url"`
+			} `json:"download_info"`
+		} `json:"install"`
+	}
+	if err := json.Unmarshal(raw, &doc); err != nil {
+		return Result{}, fmt.Errorf("execenv: pip report: %w", err)
+	}
+	pinned := map[string]LockedPkg{}
+	for _, c := range base.Packages {
+		pinned[normName(c.Name)] = c
+	}
+	var res Result
+	for _, item := range doc.Install {
+		name := item.Metadata.Name
+		if pin, ok := pinned[normName(name)]; ok {
+			if pin.Version != item.Metadata.Version {
+				res.Override = append(res.Override, fmt.Sprintf("%s 需要 %s，基础层固定为 %s", name, item.Metadata.Version, pin.Version))
+			}
+			continue
+		}
+		hash := strings.TrimPrefix(item.DownloadInfo.ArchiveInfo.Hash, "sha256=")
+		filename := name + "-" + item.Metadata.Version + ".whl"
+		if item.DownloadInfo.URL != "" {
+			filename = filepath.Base(strings.Split(item.DownloadInfo.URL, "?")[0])
+		}
+		res.Packages = append(res.Packages, LockedPkg{
+			Name: name, Version: item.Metadata.Version, Filename: filename, SHA256: hash,
+		})
+	}
+	return res, nil
+}
+
+// Fetch 把一个包下载进 wheelhouse，并返回落地路径。哈希不符则删除并报错。
+func (p Pip) Fetch(ctx context.Context, wheelhouse string, pkg LockedPkg) (string, error) {
+	if err := os.MkdirAll(wheelhouse, 0o755); err != nil {
+		return "", err
+	}
+	dest := filepath.Join(wheelhouse, pkg.Filename)
+	if pkg.SHA256 != "" {
+		if sum, err := fileSHA256(dest); err == nil && strings.EqualFold(sum, pkg.SHA256) {
+			return dest, nil
+		}
+	}
+	cmd := exec.CommandContext(ctx, p.python(), "-m", "pip", "download",
+		"--only-binary=:all:", "--no-deps", "-d", wheelhouse, pkg.Name+"=="+pkg.Version)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", fmt.Errorf("execenv: pip download %s: %v: %s", pkg.Name, err, firstLine(string(out)))
+	}
+	found := dest
+	if _, err := os.Stat(found); err != nil {
+		matches, _ := filepath.Glob(filepath.Join(wheelhouse, normName(pkg.Name)+"*.whl"))
+		if len(matches) == 0 {
+			matches, _ = filepath.Glob(filepath.Join(wheelhouse, "*.whl"))
+		}
+		if len(matches) == 0 {
+			return "", fmt.Errorf("execenv: download produced no wheel for %s", pkg.Name)
+		}
+		found = matches[len(matches)-1]
+	}
+	sum, err := fileSHA256(found)
+	if err != nil {
+		return "", err
+	}
+	if pkg.SHA256 != "" && !strings.EqualFold(sum, pkg.SHA256) {
+		_ = os.Remove(found)
+		return "", fmt.Errorf("execenv: hash mismatch for %s", pkg.Name)
+	}
+	stable := filepath.Join(wheelhouse, sum+".whl")
+	if found != stable {
+		if err := os.Rename(found, stable); err != nil {
+			return found, nil
+		}
+	}
+	return stable, nil
+}
+
+func constraintText(base Lock) string {
+	var b strings.Builder
+	for _, p := range base.Packages {
+		if p.Name != "" && p.Version != "" {
+			fmt.Fprintf(&b, "%s==%s\n", p.Name, p.Version)
+		}
+	}
+	return b.String()
+}
+
+func firstLine(s string) string {
+	s = strings.TrimSpace(s)
+	if i := strings.IndexByte(s, '\n'); i >= 0 {
+		s = s[:i]
+	}
+	if len(s) > 400 {
+		s = s[:400]
+	}
+	return s
+}

internal/execenv/python.go

@@ -0,0 +1,241 @@
+package execenv
+
+import (
+	"archive/tar"
+	"compress/gzip"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+)
+
+// PythonBin 返回托管解释器。未安装时 ok=false。
+func (r *Root) PythonBin() (string, bool) {
+	bin := filepath.Join(r.PythonDir(), "current", "bin", "python3")
+	st, err := os.Stat(bin)
+	if err != nil || st.IsDir() {
+		return "", false
+	}
+	return bin, true
+}
+
+// PythonPrefix 是需要在沙箱里重新挂载的前缀（current 的真实目录）。
+func (r *Root) PythonPrefix() string {
+	dest, err := filepath.EvalSymlinks(filepath.Join(r.PythonDir(), "current"))
+	if err != nil {
+		return ""
+	}
+	return dest
+}
+
+// LinkPython 把已有解释器收成托管前缀：python/host/bin/python3 -> 绝对路径。
+// 这是下载独立 CPython 失败时的退化，仍然全系统只有一份，不是每个工作区一份。
+func (r *Root) LinkPython(bin string) error {
+	if !filepath.IsAbs(bin) {
+		return fmt.Errorf("execenv: python bin must be absolute: %s", bin)
+	}
+	if _, err := os.Stat(bin); err != nil {
+		return err
+	}
+	host := filepath.Join(r.PythonDir(), "host")
+	bindir := filepath.Join(host, "bin")
+	if err := os.MkdirAll(bindir, 0o755); err != nil {
+		return err
+	}
+	link := filepath.Join(bindir, "python3")
+	_ = os.Remove(link)
+	if err := os.Symlink(bin, link); err != nil {
+		return err
+	}
+	if err := os.WriteFile(filepath.Join(r.PythonDir(), "SOURCE"), []byte("link "+bin+"\n"), 0o644); err != nil {
+		return err
+	}
+	return r.switchPython("host")
+}
+
+func (r *Root) switchPython(name string) error {
+	link := filepath.Join(r.PythonDir(), "current")
+	tmp := link + ".tmp"
+	_ = os.Remove(tmp)
+	if err := os.Symlink(name, tmp); err != nil {
+		return err
+	}
+	return os.Rename(tmp, link)
+}
+
+// InstallStandalone 下载 python-build-standalone 的 install_only 包并解到 python/。
+// url 为空时向 GitHub latest 要与本机架构匹配的 cpython 3.14 资产。
+func (r *Root) InstallStandalone(ctx context.Context, url string) error {
+	if url == "" {
+		var err error
+		url, err = latestStandaloneURL(ctx)
+		if err != nil {
+			return err
+		}
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return err
+	}
+	client := &http.Client{Timeout: 5 * time.Minute}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		return fmt.Errorf("execenv: download python: %s", resp.Status)
+	}
+	dest := filepath.Join(r.PythonDir(), "cpython-standalone")
+	if err := os.RemoveAll(dest); err != nil {
+		return err
+	}
+	if err := os.MkdirAll(dest, 0o755); err != nil {
+		return err
+	}
+	if err := extractTarGz(resp.Body, dest); err != nil {
+		return err
+	}
+	bin := filepath.Join(dest, "python", "bin", "python3")
+	if _, err := os.Stat(bin); err != nil {
+		return fmt.Errorf("execenv: standalone archive has no python/bin/python3")
+	}
+	// 让 current/bin/python3 成立：current -> cpython-standalone/python。
+	inner := filepath.Join("cpython-standalone", "python")
+	if err := os.WriteFile(filepath.Join(r.PythonDir(), "SOURCE"), []byte("standalone "+url+"\n"), 0o644); err != nil {
+		return err
+	}
+	return r.switchPython(inner)
+}
+
+func latestStandaloneURL(ctx context.Context) (string, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet,
+		"https://api.github.com/repos/astral-sh/python-build-standalone/releases/latest", nil)
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("Accept", "application/vnd.github+json")
+	req.Header.Set("User-Agent", "agent-system-execenv")
+	resp, err := (&http.Client{Timeout: 30 * time.Second}).Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		return "", fmt.Errorf("execenv: github releases: %s", resp.Status)
+	}
+	var doc struct {
+		Assets []struct {
+			Name string `json:"name"`
+			URL  string `json:"browser_download_url"`
+		} `json:"assets"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&doc); err != nil {
+		return "", err
+	}
+	arch := "x86_64"
+	if runtime.GOARCH == "arm64" {
+		arch = "aarch64"
+	}
+	needle := arch + "-unknown-linux-gnu-install_only.tar.gz"
+	var fallback string
+	for _, a := range doc.Assets {
+		if !strings.Contains(a.Name, needle) || !strings.HasPrefix(a.Name, "cpython-3.14") {
+			continue
+		}
+		if strings.Contains(a.Name, "freethreaded") {
+			fallback = a.URL
+			continue
+		}
+		return a.URL, nil
+	}
+	if fallback != "" {
+		return fallback, nil
+	}
+	return "", errors.New("execenv: no cpython 3.14 install_only asset")
+}
+
+func extractTarGz(rd io.Reader, dest string) error {
+	gz, err := gzip.NewReader(rd)
+	if err != nil {
+		return err
+	}
+	defer gz.Close()
+	tr := tar.NewReader(gz)
+	for {
+		hdr, err := tr.Next()
+		if errors.Is(err, io.EOF) {
+			return nil
+		}
+		if err != nil {
+			return err
+		}
+		name := filepath.Clean(hdr.Name)
+		if name == "." || strings.HasPrefix(name, "..") || filepath.IsAbs(name) {
+			return fmt.Errorf("execenv: tar path escapes: %s", hdr.Name)
+		}
+		target := filepath.Join(dest, name)
+		if !strings.HasPrefix(target, filepath.Clean(dest)+string(os.PathSeparator)) && target != filepath.Clean(dest) {
+			return fmt.Errorf("execenv: tar path escapes: %s", hdr.Name)
+		}
+		switch hdr.Typeflag {
+		case tar.TypeDir:
+			if err := os.MkdirAll(target, 0o755); err != nil {
+				return err
+			}
+		case tar.TypeReg:
+			if err := os.MkdirAll(filepath.Dir(target), 0o755); err != nil {
+				return err
+			}
+			mode := os.FileMode(hdr.Mode) & 0o777
+			if mode == 0 {
+				mode = 0o644
+			}
+			f, err := os.OpenFile(target, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, mode)
+			if err != nil {
+				return err
+			}
+			_, cerr := io.Copy(f, tr)
+			f.Close()
+			if cerr != nil {
+				return cerr
+			}
+		case tar.TypeSymlink:
+			if err := os.MkdirAll(filepath.Dir(target), 0o755); err != nil {
+				return err
+			}
+			_ = os.Remove(target)
+			if err := os.Symlink(hdr.Linkname, target); err != nil {
+				return err
+			}
+		}
+	}
+}
+
+// BootstrapVenv 用系统 python3 做一份唯一的托管前缀。解释器仍指向系统 python，
+// 但 pip 在这份前缀里，构建器可以下载 wheel。
+func (r *Root) BootstrapVenv(python string) error {
+	if python == "" {
+		python = "/usr/bin/python3"
+	}
+	dest := filepath.Join(r.PythonDir(), "venv")
+	if _, err := os.Stat(filepath.Join(dest, "bin", "python3")); err != nil {
+		cmd := exec.Command(python, "-m", "venv", dest)
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			return fmt.Errorf("execenv: venv: %v: %s", err, out)
+		}
+	}
+	if err := os.WriteFile(filepath.Join(r.PythonDir(), "SOURCE"), []byte("venv "+python+"\n"), 0o644); err != nil {
+		return err
+	}
+	return r.switchPython("venv")
+}

internal/execenv/resolve.go

@@ -0,0 +1,221 @@
+package execenv
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Wheel 是索引里的一个候选。Kind 为 wheel 或 sdist。
+type Wheel struct {
+	Name     string
+	Version  string
+	Filename string
+	SHA256   string
+	Kind     string
+	Requires []string
+	Size     int64
+}
+
+// Result 是一次解析。Packages 只含相对约束新增的包，不含基础层已有的。
+type Result struct {
+	Packages []LockedPkg
+	Override []string
+	SDist    []string
+	Missing  []string
+	Denied   []string
+}
+
+func (r Result) OK() bool {
+	return len(r.Override) == 0 && len(r.SDist) == 0 && len(r.Missing) == 0 && len(r.Denied) == 0
+}
+
+// ResolveMem 用内存索引解析。基础层里已有且版本满足的包不会进入 Packages。
+// 版本不满足时记入 Override，不改约束。
+func ResolveMem(index []Wheel, reqs []string, constraints []LockedPkg) Result {
+	byName := map[string][]Wheel{}
+	for _, w := range index {
+		byName[normName(w.Name)] = append(byName[normName(w.Name)], w)
+	}
+	pinned := map[string]LockedPkg{}
+	for _, c := range constraints {
+		pinned[normName(c.Name)] = c
+	}
+	chosen := map[string]LockedPkg{}
+	var res Result
+	queue := append([]string{}, reqs...)
+	seen := map[string]bool{}
+	for len(queue) > 0 {
+		req := strings.TrimSpace(queue[0])
+		queue = queue[1:]
+		if req == "" {
+			continue
+		}
+		name, spec := splitReq(req)
+		key := normName(name)
+		mark := key + "\x00" + spec
+		if seen[mark] {
+			continue
+		}
+		seen[mark] = true
+		if pin, ok := pinned[key]; ok {
+			if spec != "" && !matchSpec(pin.Version, spec) {
+				res.Override = append(res.Override, fmt.Sprintf("%s 需要 %s，基础层固定为 %s", name, spec, pin.Version))
+			}
+			continue
+		}
+		if prev, ok := chosen[key]; ok {
+			if spec != "" && !matchSpec(prev.Version, spec) {
+				res.Override = append(res.Override, fmt.Sprintf("%s 需要 %s，已选 %s", name, spec, prev.Version))
+			}
+			continue
+		}
+		best, sdist := pickWheel(byName[key], spec)
+		if sdist && best == nil {
+			res.SDist = append(res.SDist, name)
+			continue
+		}
+		if best == nil {
+			res.Missing = append(res.Missing, name)
+			continue
+		}
+		pkg := LockedPkg{
+			Name: best.Name, Version: best.Version, Filename: best.Filename,
+			SHA256: best.SHA256, Size: best.Size,
+		}
+		chosen[key] = pkg
+		for _, dep := range best.Requires {
+			queue = append(queue, dep)
+		}
+	}
+	names := make([]string, 0, len(chosen))
+	for n := range chosen {
+		names = append(names, n)
+	}
+	sortStrings(names)
+	for _, n := range names {
+		res.Packages = append(res.Packages, chosen[n])
+	}
+	return res
+}
+
+func pickWheel(cands []Wheel, spec string) (best *Wheel, sawSDist bool) {
+	for i := range cands {
+		w := &cands[i]
+		if spec != "" && !matchSpec(w.Version, spec) {
+			continue
+		}
+		if w.Kind == "sdist" {
+			sawSDist = true
+			continue
+		}
+		if best == nil || cmpVer(w.Version, best.Version) > 0 {
+			best = w
+		}
+	}
+	return best, sawSDist
+}
+
+func splitReq(req string) (name, spec string) {
+	for i, r := range req {
+		if r == '=' || r == '<' || r == '>' || r == '!' || r == '~' || r == ' ' {
+			return strings.TrimSpace(req[:i]), strings.TrimSpace(req[i:])
+		}
+	}
+	return req, ""
+}
+
+func matchSpec(version, spec string) bool {
+	for _, part := range strings.Split(spec, ",") {
+		part = strings.TrimSpace(part)
+		if part == "" || part == "*" {
+			continue
+		}
+		switch {
+		case strings.HasPrefix(part, "=="):
+			if version != strings.TrimPrefix(part, "==") {
+				return false
+			}
+		case strings.HasPrefix(part, "!="):
+			if version == strings.TrimPrefix(part, "!=") {
+				return false
+			}
+		case strings.HasPrefix(part, ">="):
+			if cmpVer(version, strings.TrimPrefix(part, ">=")) < 0 {
+				return false
+			}
+		case strings.HasPrefix(part, "<="):
+			if cmpVer(version, strings.TrimPrefix(part, "<=")) > 0 {
+				return false
+			}
+		case strings.HasPrefix(part, ">"):
+			if cmpVer(version, strings.TrimPrefix(part, ">")) <= 0 {
+				return false
+			}
+		case strings.HasPrefix(part, "<"):
+			if cmpVer(version, strings.TrimPrefix(part, "<")) >= 0 {
+				return false
+			}
+		default:
+			if version != part {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+func cmpVer(a, b string) int {
+	as := splitVer(a)
+	bs := splitVer(b)
+	n := len(as)
+	if len(bs) > n {
+		n = len(bs)
+	}
+	for i := 0; i < n; i++ {
+		ai, bi := 0, 0
+		if i < len(as) {
+			ai = as[i]
+		}
+		if i < len(bs) {
+			bi = bs[i]
+		}
+		if ai != bi {
+			return ai - bi
+		}
+	}
+	return 0
+}
+
+func splitVer(v string) []int {
+	v = strings.TrimPrefix(v, "v")
+	if i := strings.IndexAny(v, "abrc"); i > 0 {
+		// 丢掉本地/预发布后缀，比较只看数字段。
+		head := v[:i]
+		if _, err := strconv.Atoi(string(head[len(head)-1])); err == nil {
+			v = head
+		}
+	}
+	var out []int
+	for _, p := range strings.Split(v, ".") {
+		n := 0
+		for _, r := range p {
+			if r < '0' || r > '9' {
+				break
+			}
+			n = n*10 + int(r-'0')
+		}
+		out = append(out, n)
+	}
+	return out
+}
+
+func sortStrings(s []string) {
+	for i := 1; i < len(s); i++ {
+		j := i
+		for j > 0 && s[j] < s[j-1] {
+			s[j], s[j-1] = s[j-1], s[j]
+			j--
+		}
+	}
+}

internal/execenv/resolve_test.go

@@ -0,0 +1,48 @@
+package execenv
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestResolveMemConflictAllowlistAndSDist(t *testing.T) {
+	index := []Wheel{
+		{Name: "Foo", Version: "1.0.0", Filename: "foo-1.whl", SHA256: "aaa", Kind: "wheel"},
+		{Name: "Foo", Version: "2.0.0", Filename: "foo-2.whl", SHA256: "bbb", Kind: "wheel"},
+		{Name: "OnlySrc", Version: "1", Filename: "onlysrc-1.tar.gz", Kind: "sdist"},
+	}
+	got := ResolveMem(index, []string{"foo==1.0.0"}, []LockedPkg{{Name: "foo", Version: "2.0.0"}})
+	if len(got.Override) != 1 || len(got.Packages) != 0 {
+		t.Fatalf("conflict should keep the pin and record an override: %+v", got)
+	}
+	fresh := ResolveMem(index, []string{"foo"}, nil)
+	if len(fresh.Packages) != 1 || fresh.Packages[0].Version != "2.0.0" {
+		t.Fatalf("unpinned foo should pick the newest wheel: %+v", fresh.Packages)
+	}
+	sdist := ResolveMem(index, []string{"onlysrc"}, nil)
+	if len(sdist.SDist) != 1 || len(sdist.Packages) != 0 {
+		t.Fatalf("sdist-only must be refused: %+v", sdist)
+	}
+	missing := ResolveMem(index, []string{"nope"}, nil)
+	if len(missing.Missing) != 1 {
+		t.Fatalf("missing: %+v", missing)
+	}
+}
+
+func TestBuildLayerRejectsHashMismatch(t *testing.T) {
+	root, err := Open(t.TempDir())
+	if err != nil {
+		t.Fatal(err)
+	}
+	wheel := root.Wheelhouse() + "/foo.whl"
+	if err := osWriteWheel(wheel, "foo.py"); err != nil {
+		t.Fatal(err)
+	}
+	_, err = root.BuildLayer(Lock{
+		Schema: 1, Kind: "base", PythonTag: "cp314", Platform: "any",
+		Packages: []LockedPkg{{Name: "foo", Version: "1", Filename: "foo.whl", SHA256: "deadbeef"}},
+	})
+	if err == nil || !strings.Contains(err.Error(), "hash mismatch") {
+		t.Fatalf("err = %v", err)
+	}
+}