docs(ops): claim M5/M6 U11–U12 composition and transport gate

User authorized continuing past U10 stop-ship; register app mutex on feature/app-composition-u11-u12.

Co-authored-by: Cursor <cursoragent@cursor.com>

.doc/ops/CURRENT.md

@@ -6,13 +6,14 @@
 ## 焦点
 
 1. **CHAT-INTENT**: [对话意图运行时状态](../audit/2026-09-13-conversation-intent-runtime-state.md)（`fix/conversation-intent-state` 已是 `dev` 祖先；浏览器双标签 busy 仍待 Codex 收口）
-2. **DOC-RELIABILITY**: [U10 已合入，停止扩面](../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md)（占槽 rebuild PASS；**禁止 U11–U12**）
+2. **DOC-RELIABILITY**: [U11–U12 组合根与传输门禁](./short-term/2026-09-15-app-composition-u11-u12.md)（用户已授权；合同 PASS，待占槽合入 `dev`）
 3. **CHAT**: [对话历史刷新活验已补](../test-reports/2026-09-13-chat-history-refresh-test-report.md)（项目 6252 闲聊刷新同集 + guest 403；编制任务链仍开放）
 
 ## 并行认领
 
 | owner | task | branch | worktree | mutex | status |
 |-------|------|--------|----------|-------|--------|
+| Cursor | app-composition-u11-u12 | feature/app-composition-u11-u12 | - | app | in_progress |
 | Cursor | chatlog-contextasm-u10 | feature/chatlog-contextasm-u10 | - | chat | done |
 | Cursor | chat-history-refresh-remediation | fix/chat-history-refresh | - | chat | done |
 | Cursor | dataset-lifecycle-u9 | feature/dataset-lifecycle-u9 | - | dataset | done |
@@ -57,7 +58,7 @@
 > 新任务开始前登记。`branch` 必须为 `feature/<slug>` 或 `fix/<slug>`，**禁止** `dev` / `test` / `main`。同一 `mutex` 同时仅一个 `in_progress`。
 
 > workflow-plan 409 与治理鉴权 G1–G5 已收口（见 [test-report](../test-reports/2026-09-14-governance-action-level-authz-test-report.md)）。禁止终止或改写项目 143。
-> `document-reliability-pilot` U10 **停止扩面**（已合入 `dev`，占槽 rebuild PASS）。禁止 U11–U12。禁止 worktree 内 `env-service`。项目 143 只读，禁止终止。不碰 `intent`。
+> `document-reliability-pilot` U11–U12 合同已签（`feature/app-composition-u11-u12`）。合入 `dev` 须占集成槽。禁止 worktree 内 `env-service`。项目 143 只读，禁止终止。不碰 `intent`。
 
 ## 集成槽位
 
@@ -99,6 +100,7 @@
 | 文档可靠性 M3 U8 | [../test-reports/2026-09-15-taskrun-runmanifest-u8-test-report.md](../test-reports/2026-09-15-taskrun-runmanifest-u8-test-report.md) |
 | 文档可靠性 M3 U9 | [../test-reports/2026-09-15-dataset-lifecycle-u9-test-report.md](../test-reports/2026-09-15-dataset-lifecycle-u9-test-report.md) |
 | 文档可靠性 M4 U10 | [../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md](../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md) |
+| 文档可靠性 M5/M6 U11–U12 | [../test-reports/2026-09-15-app-composition-u11-u12-test-report.md](../test-reports/2026-09-15-app-composition-u11-u12-test-report.md) |
 | SSE/幂等审计 | [../audit/2026-09-13-document-revision-sse-idempotency.md](../audit/2026-09-13-document-revision-sse-idempotency.md) |
 | 质量门禁自污染审计 | [../audit/2026-09-13-document-revision-quality-gate-self-pollution.md](../audit/2026-09-13-document-revision-quality-gate-self-pollution.md) |
 | 当前文档路由审计 | [../audit/2026-09-13-document-revision-active-doc-routing.md](../audit/2026-09-13-document-revision-active-doc-routing.md) |

.doc/ops/short-term/2026-09-15-app-composition-u11-u12.md

@@ -0,0 +1,61 @@
+---
+title: "M5/M6 组合根与传输门禁 U11–U12"
+status: in_progress
+created: 2026-09-15
+updated: 2026-09-15
+owner: Cursor
+branch: feature/app-composition-u11-u12
+worktree: "-"
+mutex: app
+---
+
+# M5/M6 组合根与传输门禁 U11–U12
+
+## 目标
+
+按整改计划四个子切片完成组合根、文档通知闭包迁出、stageflow 用例、UserProjectContext CAS；再收口 SSE 编码与已清零规则的 arch-check block。用户已明确授权继续 U11/U12（推翻 U10 报告的停止扩面）。
+
+## 范围
+
+- U11a：`internal/app` 唯一 composition root；幂等 Start/Stop
+- U11b：文档 `OnOutbox` 通知迁到 `internal/app/docnotify`
+- U11c：`internal/app/stageflow` 拥有 ExecuteTask / ExecuteStage
+- U11d：`ContextUpdate` 版本 CAS，禁止跨模块字段级直改
+- U12：SSE 中性 frame 编码；`import`/`event` 转 block；不改错误信封与 PI Runner 协议
+
+## 非目标
+
+- 不碰 `intent` 包行为（mutex 仍由 Codex 占用）
+- 不整支 merge `feature/final-artifact-vault`；不启用 `FAV_DEGRADED_READ`
+- 不终止或改写项目 143
+- 不删除未到期的 sql_write/path 例外（U3/U5 残留）
+- 不在 worktree 内 `env-service`
+
+## 步骤
+
+1. [x] 认领 CURRENT + 本任务
+2. [x] U11a composition root
+3. [x] U11b docnotify
+4. [x] U11c stageflow
+5. [x] U11d ContextUpdate
+6. [x] U12 SSE + arch-check block_kinds
+7. [x] 短测 / 目标包 race / 报告
+
+## 验收标准
+
+- [x] 重复 Start 不重复注册 subscriber；Stop 后再 Start worker 仍在
+- [x] server 生产代码不再赋值 `OnOutbox`
+- [x] HTTP 与 CLI 走同一 stageflow 用例
+- [x] ContextUpdate 并发 stale version 不丢更新赢家
+- [x] `arch-check --mode block` 对已清零的 import/event 通过
+- [x] 测试报告回链 U11/U12
+
+## 相关链接
+
+- Checklist: [../checklists/2026-09-14-module-decoupling-refactor-acceptance.md](../checklists/2026-09-14-module-decoupling-refactor-acceptance.md)
+- Plan: [../../remediation/2026-09-14-module-decoupling-refactor-plan.md](../../remediation/2026-09-14-module-decoupling-refactor-plan.md)
+- Test report: [../../../test-reports/2026-09-15-app-composition-u11-u12-test-report.md](../../../test-reports/2026-09-15-app-composition-u11-u12-test-report.md)
+
+## 证据 / 备注
+
+用户口头授权：「继续解耦到 U11、U12」。

.doc/remediation/gap-matrix.md

@@ -70,7 +70,7 @@
 | DOCREV-ACTIVE-DOC-ROUTING | UI-05「当前受控文档」被法规关键词改路由到 `feasibility_reg`，intake 无 pending | **PASS** | [audit](../audit/2026-09-13-document-revision-active-doc-routing.md)；Round20 UI-05 pending 停在 intake V2 | **不改弱 E2E**；不删证据 |
 | DOCREV-QUALITY-STATUS-FP | 行动计划表状态列「待续」被门禁当敷衍，两轮 repair 后 quality_failed 80 | **PASS** | [audit](../audit/2026-09-13-document-revision-quality-status-false-positive.md)；Round20 UI-03 | **不删禁词、不放宽正文**；不删证据 |
 | GOVERNANCE-ACTION-AUTHZ | 文档动作按职责鉴权；未激活 202-blocked；关闭创建直通 | **PASS** | [test-report](../test-reports/2026-09-14-governance-action-level-authz-test-report.md)；[audit 异态](../audit/2026-09-14-planning-with-workflow-key-anomaly.md) | 不改 83 条 planning+key 夹具；none 长 PI 审批链另开 |
-| DOC-RELIABILITY-PILOT | 受控文档写路径跨表非同事务、读路径被 projection 绑架、授权 TOCTOU；刷新/重启后可能 404/409/projection-missing | OPEN | [复核](../audit/2026-09-14-module-decoupling-plan-review.md)；[重构计划](./2026-09-14-module-decoupling-refactor-plan.md)；[试点任务](../ops/short-term/2026-09-14-document-reliability-pilot.md)；[M1 停止扩面](../test-reports/2026-09-14-document-reliability-pilot-test-report.md)；[M1 活验](../test-reports/2026-09-14-document-reliability-pilot-live-test-report.md)；[M2](../test-reports/2026-09-14-document-reliability-m2-test-report.md)；[M3 U8](../test-reports/2026-09-15-taskrun-runmanifest-u8-test-report.md)；[M3 U9](../test-reports/2026-09-15-dataset-lifecycle-u9-test-report.md)；[U10 停止扩面](../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md) | M3 已签。U10 **停止扩面**（未拆包；已合入 `dev` + rebuild）。禁止 U11–U12 业务代码 |
+| DOC-RELIABILITY-PILOT | 受控文档写路径跨表非同事务、读路径被 projection 绑架、授权 TOCTOU；刷新/重启后可能 404/409/projection-missing | OPEN | [复核](../audit/2026-09-14-module-decoupling-plan-review.md)；[重构计划](./2026-09-14-module-decoupling-refactor-plan.md)；[试点任务](../ops/short-term/2026-09-14-document-reliability-pilot.md)；[M1 停止扩面](../test-reports/2026-09-14-document-reliability-pilot-test-report.md)；[M1 活验](../test-reports/2026-09-14-document-reliability-pilot-live-test-report.md)；[M2](../test-reports/2026-09-14-document-reliability-m2-test-report.md)；[M3 U8](../test-reports/2026-09-15-taskrun-runmanifest-u8-test-report.md)；[M3 U9](../test-reports/2026-09-15-dataset-lifecycle-u9-test-report.md)；[U10 报告](../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md)；[U11–U12 报告](../test-reports/2026-09-15-app-composition-u11-u12-test-report.md) | U11–U12 合同已签，待占槽合入 `dev` + rebuild。path/sql_write 未到期例外保留。不碰 intent / 项目 143 |
 
 ---
 

.doc/status/FEATURE-MATRIX.md

@@ -27,7 +27,7 @@
 | PI Runner / 配置链 | pi-agent + MiniMax 真实链路 | done | [test piagent](../test-reports/2026-09-13-codex-audit-p0-remediation-test-report.md)；[container-env](../test-reports/2026-09-13-container-env-configuration-test-report.md) | — | `pi-agent` |
 | 三环境运维 | dev/test/main + 共享 KB | done | [PROJECT.md](../../PROJECT.md) §4；四环境 healthy | — | `infra` |
 | CI / E2E | PG 集成 + 真实 PI E2E | partial | [gap-matrix BUG-08](../remediation/gap-matrix.md)；[test pg-ci](../test-reports/2026-09-12-pg-ci-soak-e2e-test-report.md)；[运行时 UI Round20](../test-reports/2026-09-14-document-revision-runtime-ui-test-report.md) | CI `TEST_DATABASE_URL` 隔离库仍缺；文档运行时真实 UI 已按 UI_PHASE 分文件且 post-restart 断言最终 A1 正文。`-race` 全包并行 TempDir flake 为基建残留 | `ci` |
-| 模块解耦与可靠事件 | 文档可靠性纵向试点、跨属主事务、多副本互斥、FAV 与选择性模块化 | partial | [架构](../system-design/2026-09-14-module-decoupling-architecture.md)；[ADR](../adr/2026-09-14-modular-monolith-decoupling.md)；[重构计划](../remediation/2026-09-14-module-decoupling-refactor-plan.md)；[试点任务](../ops/short-term/2026-09-14-document-reliability-pilot.md)；[M1 停止扩面](../test-reports/2026-09-14-document-reliability-pilot-test-report.md)；[M1 活验](../test-reports/2026-09-14-document-reliability-pilot-live-test-report.md)；[M2](../test-reports/2026-09-14-document-reliability-m2-test-report.md)；[M3 U8](../test-reports/2026-09-15-taskrun-runmanifest-u8-test-report.md)；[M3 U9](../test-reports/2026-09-15-dataset-lifecycle-u9-test-report.md)；[U10 报告](../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md) | U5–U10 已签（U10 **停止扩面**，已合入 `dev` + rebuild）。禁止 U11–U12。未整支 merge FAV | `architecture-docs` |
+| 模块解耦与可靠事件 | 文档可靠性纵向试点、跨属主事务、多副本互斥、FAV 与选择性模块化 | partial | [架构](../system-design/2026-09-14-module-decoupling-architecture.md)；[ADR](../adr/2026-09-14-modular-monolith-decoupling.md)；[重构计划](../remediation/2026-09-14-module-decoupling-refactor-plan.md)；[试点任务](../ops/short-term/2026-09-14-document-reliability-pilot.md)；[M1 停止扩面](../test-reports/2026-09-14-document-reliability-pilot-test-report.md)；[M1 活验](../test-reports/2026-09-14-document-reliability-pilot-live-test-report.md)；[M2](../test-reports/2026-09-14-document-reliability-m2-test-report.md)；[M3 U8](../test-reports/2026-09-15-taskrun-runmanifest-u8-test-report.md)；[M3 U9](../test-reports/2026-09-15-dataset-lifecycle-u9-test-report.md)；[U10 报告](../test-reports/2026-09-15-chatlog-contextasm-u10-test-report.md)；[U11–U12 报告](../test-reports/2026-09-15-app-composition-u11-u12-test-report.md) | U5–U12 合同已签（U11–U12 在 `feature/app-composition-u11-u12`，合入 `dev` 后占槽 rebuild）。path/sql_write 未到期例外保留。未整支 merge FAV | `architecture-docs` |
 
 ---