diff --git a/.task/feature-fast-slow-u2-u3-plan.md b/.task/feature-fast-slow-u2-u3-plan.md
index d1f3acaf..e8dd1194 100644
--- a/.task/feature-fast-slow-u2-u3-plan.md
+++ b/.task/feature-fast-slow-u2-u3-plan.md
@@ -1,6 +1,6 @@
 # feature/fast-slow-u2-u3-plan 任务卡
 
-任务主记录：modules/documents/docs/proposals/2026-10-13-fast-slow-u2-u3-plan.md r0.1；质量修订 r0.2/r0.3/r0.4 见 Documents proposals；状态：r0.2 唯一获批 A01 因无依据分期归属而语义 FAIL；r0.3 唯一获批 A01 因不完整检查点参数而零阶段成果、最终正文缺失，质量 FAIL；r0.4 零付费实施在 Dev `aedcc7c` 获阶段6人工确认，当前另获**一次**受控 A01 资源授权，独立标签已零付费准备但真实模型仍 NOT_RUN；主干同步后的新组合与当前 HEAD CI 待固定；八个 PR 草稿，未合入/部署；owner：weichen
+任务主记录：modules/documents/docs/proposals/2026-10-13-fast-slow-u2-u3-plan.md r0.1；质量修订 r0.2–r0.5 见 Documents proposals。r0.2–r0.4 唯一获批的真实模型 A01 均为质量 FAIL；r0.4 已用尽资源授权，实际 2 run／3 provider 调用／29,062 返回 Usage，零检查点与最终正文。用户已批准 r0.5 书面设计、详细计划及本会话零付费实施；新真实模型 A01 `NOT_RUN`、未授权。当前准备 r0.5 阶段6候选，八个 PR 保持草稿，未合入/部署；owner：weichen
 
 ## 基线与授权
 
@@ -20,7 +20,16 @@
 - r0.4 计划候选：Documents `276f885e7301bd39ae2d464c7469a37fe10ebf22` 的六单元／三十步计划已写成；Dev 在暂存该 gitlink 的组合上 `make test` exit0，完整 SELF 收据 `/tmp/fast-slow-u3-r04-20261014-plan-combo-test.json` 已由工具导入下方。这只证明当前文档指针组合可测，计划仍待人工批准，r0.4 行为及真实模型质量均 `NOT_RUN`。
 - r0.4 计划实施授权：用户 2026-10-14 明确答复“批准计划，开始零付费实施”；按 Documents `276f885e7301bd39ae2d464c7469a37fe10ebf22` 六单元实施和验证。新付费 A01 仍须候选固定后另行审批；旧 r0.3 失败和额度不沿用。此前两条“待批准”记录保留其当时状态，当前以本条为准。
 - r0.4 阶段6人工结论：用户在本会话对 [阶段6评审材料](/tmp/fast-slow-u3-r04-20261014/stage6-review.md) 与 [独立复审原件](/tmp/fast-slow-u3-r04-20261014/independent-review.md) 明确选择“确认阶段6通过，进入资源审批（推荐）”；记录时间 2026-10-14 13:05（Asia/Shanghai），评审对象 Dev `aedcc7c61e23128b6ac4ffff8642e266df5eabec`、其八组件、Dev run 3063 三项精确HEAD CI及六项浏览器/PG零付费机制。阶段6结论为**通过**，只授权进入[单独资源提案](/tmp/fast-slow-u3-r04-20261014/A01-resource-proposal.md)评审，不授权付费模型调用、合入或部署；书面记录见[阶段6结论](/tmp/fast-slow-u3-r04-20261014/stage6-decision.md)。主干随后推进，需按影响验证新候选，不把旧CI冒充新对象。
-- r0.4 一次性 A01 资源授权：用户在本会话对[资源提案](/tmp/fast-slow-u3-r04-20261014/A01-resource-proposal.md)明确选择“批准这一次受控 A01 复验（推荐）”；记录时间 2026-10-14 13:24（Asia/Shanghai），基线 Dev `ffb0ff5c796022286868819855179ec0385f636b`、Backend `549798c0a08806e45eb065ad0ea2568283651b2d`。边界为最多2个付费run、每run 30000 tokens/8轮/12工具/300秒、单次输出4000 tokens、已返回Usage整批目标≤60000（在途可略超）；无自动重试、补跑、换模型/回退，检查点拒绝、缺Usage、终态不完整、记录不可写或额度达到边界后不得发后继请求。完整授权与提案哈希见[授权记录](/tmp/fast-slow-u3-r04-20261014/A01-authorization.md)。仅批准这一轮质量试验，不含合入/部署；标签准备与后续新 SHA 的准确CI/预检均为正式启动前置，至今真实模型 NOT_RUN。
+- r0.4 一次性 A01 资源授权：用户在本会话对[资源提案](/tmp/fast-slow-u3-r04-20261014/A01-resource-proposal.md)明确选择“批准这一次受控 A01 复验（推荐）”；记录时间 2026-10-14 13:24（Asia/Shanghai），基线 Dev `ffb0ff5c796022286868819855179ec0385f636b`、Backend `549798c0a08806e45eb065ad0ea2568283651b2d`。边界为最多2个付费run、每run 30000 tokens/8轮/12工具/300秒、单次输出4000 tokens、已返回Usage整批目标≤60000（在途可略超）；无自动重试、补跑、换模型/回退，检查点拒绝、缺Usage、终态不完整、记录不可写或额度达到边界后不得发后继请求。完整授权与提案哈希见[授权记录](/tmp/fast-slow-u3-r04-20261014/A01-authorization.md)。仅批准这一轮质量试验，不含合入/部署；该条记录的是启动前授权状态，实际结果见下条与核验报告。
+- r0.5 阶段授权：上述 r0.4 资源提案随后只执行一次，真实质量 FAIL，额度用尽；后续状态以本条与核验报告为准。用户先批准 r0.5 书面设计 Documents `0d473fe`，再批准详细计划 Documents `25a561b`、Dev `fee1cc2`，最后明确选择“批准计划，开始零付费实施”。该授权覆盖计划内组件代码、假流／真实 HTTP／浏览器／隔离 PG 验证及阶段6候选准备；不包含任何付费供应商探针或 A01、合入或部署。新的资源试验须独立提案。
+
+## r0.5 零付费实施进展（候选固定前）
+
+Agent-Native `6a1dcdd` 为流终态添加无原文的观察标量，未见 `[DONE]` 的工具调用继续拒绝；Backend `bd41302` 首回合由宿主按已建卡状态给安全收件确认，受控评测只落 run ID、Usage 与终态标量，不再复制 prompt／工具参数／原始 terminal；Agent-Squad `bfb0834` 固定同一 Native；Frontend `cfabed8` 增加四个浏览器输入／复用场景。Dev 的四个 gitlink 已暂存，准确 HEAD 和阶段6材料待最终提交。
+
+`SELF`：Agent-Native 和 Backend 的 RED→GREEN／完整单测见实施进度 ledger 与 `/tmp/fast-slow-u3-r05-task{1,2,3}-*.json`；Backend 精确 `4790e8c` GATE run3101 已通过，后续 `bd41302` 的 GATE 须单独核验。任务自有浏览器实例 `/tmp/fast-slow-u3-r05-20261014/browser-final/` 经 PID、二进制 SHA、组件清单核验，10 项 Playwright 全部通过（`/tmp/fast-slow-u3-r05-task4-browser-final.json`）；含 390px 窄屏截图、首条确认、文字＋长／小材料、活动／完成复用、两阶段发现、零／部分失败、来源更新与不抢焦点。隔离 PG／Redis 数据根和数据库身份核验后 `make test-backend-pg` 全量通过，实例已停止（`/tmp/fast-slow-u3-r05-task4-pg-first.json`）。Frontend 269 单测和构建、Backend vet 与选定零付费 live-tag 测试通过（`/tmp/fast-slow-u3-r05-task4-component-tests.json`）；Squad 完整 Go vet/test 与 Backend 新 Squad pin 完整 Go vet/test 通过；Dev 暂存指针后 `make test-pins`、`make test && make build` 通过，完整原始输出由本卡下方 evidence 段落保存。浏览器首轮三项失败分别来自检查时序、夹具材料未达阈值和重复 DOM 匹配，原失败收据保留，修正后十项通过。
+
+上述仅为零付费机制及界面观察；真实模型 r0.5 A01 `NOT_RUN`，不能推断供应商是否提供完整 `[DONE]`、两个有用阶段成果或最终正文。r0.4 真实质量 FAIL 不改判，八个 PR 继续草稿。
 
 ## 目标与范围
 
@@ -8544,3 +8553,41 @@ Dev草稿PR #512及Core #31、Backend #193、Frontend #79、UI #51、Documents #
 }
 ```
 | 同步（记录前对象） | d23fb4363dcc0a206e71e47f9cd23a644c7e1c70 | 33422809ad6c624a2c306888f1daf285e2ba9431 | 2026-10-14T07:39:01Z |
+
+<!-- Local receipt: SELF. Digests detect corruption; they do not authenticate a reviewer or CI. -->
+```json
+{
+  "schema": 1,
+  "source": "SELF",
+  "timestamp": "2026-10-14T07:39:20.620118+00:00",
+  "command": "make precheck",
+  "command_sha256": "8fd03cdee8adbb8562846a1a114cc0623779a8654412cd20aac9b495e7eb0450",
+  "cwd": "/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan",
+  "common_dir": "/home/weichen/projects/Agent-System-Dev/.git",
+  "before": {
+    "head": "bb15fd129340d9010769c9cecd4895592f86555b",
+    "branch": "feature/fast-slow-u2-u3-plan",
+    "target_branch": "main",
+    "target_head": "d23fb4363dcc0a206e71e47f9cd23a644c7e1c70",
+    "status": "",
+    "tracked_diff_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "untracked": {},
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modules/backend/deps/agent-squad/deps/agent-intent/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/agent-squad/deps/agent-intent/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-intent/deps/logging-system/deps/development-guidelines (26b562d)\n a5e3c7c817166865d75b764337b15ca7d505d131 modules/backend/deps/agent-squad/deps/agent-native (remotes/origin/feature/fast-slow-u3-r04-stream-guard)\n 343b1e6d9a5b58e47bf7e594826221036ae8175c modules/backend/deps/agent-squad/deps/agent-native/deps/agent-intent (heads/main)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-native/deps/agent-intent/deps/development-guidelines (26b562d)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/agent-squad/deps/agent-native/deps/agent-intent/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-native/deps/agent-intent/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/agent-squad/deps/agent-native/deps/agent-intent/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-native/deps/agent-intent/deps/logging-system/deps/development-guidelines (26b562d)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-native/deps/development-guidelines (26b562d)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/agent-squad/deps/agent-native/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-native/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/agent-squad/deps/agent-native/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-native/deps/logging-system/deps/development-guidelines (26b562d)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/development-guidelines (26b562d)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/agent-squad/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/agent-squad/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/logging-system/deps/development-guidelines (26b562d)\n b4743949e525f5e6a6dbce6509e221cac6d15db5 modules/backend/deps/agent-system-core (v0.3.0-24-gb474394)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/logging-system/deps/development-guidelines (26b562d)\n b4743949e525f5e6a6dbce6509e221cac6d15db5 modules/core (v0.3.0-24-gb474394)\n 25a561b0475a5a636e66cb9897c06ff71d72709a modules/documents (heads/feature/fast-slow-u2-u3-plan)\n c9d5acf0898dd97194953605283c7498302b3efa modules/frontend (v0.3.0-120-gc9d5acf)\n ac5b617e9e7ee6b9417b36c66d7c6e3b58ecbb42 modules/ui (v0.3.0-40-gac5b617)\n"
+  },
+  "after_error": null,
+  "exit_code": 0,
+  "output": "make[1]: Entering directory '/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan'\n[repo]   branch=feature/fast-slow-u2-u3-plan head=bb15fd1293\n[remote] origin/main=d23fb4363d ahead=125 behind=0\n[tree]   clean submodules_drift=0 uninit=0\n[worktrees] linked=11\n[hooks]   core.hooksPath=scripts/hooks（pre-commit/post-merge 实际接线）\n[facts]   policy/facts.md 6 条事实均在有效期内\n[required-reading] core/baseline.md, workflows/delivery.md §1, policy/delivery.md\n[R0] d23fb4363d（完整：d23fb4363dcc0a206e71e47f9cd23a644c7e1c70）\n[worktree] before-sync: recursive component checks passed\n[verdict] READY — 保留本次 precheck receipt 后建任务工作区：PRECHECK_RECEIPT=/tmp/task-precheck.json make task-start NAME=feature/your-branch\nmake[1]: Leaving directory '/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan'\n",
+  "output_sha256": "670c27cc06512c106a9390607fd27ab2922a856246de04bb54c382891744f9c2",
+  "receipt_sha256": "c665d43144691ac717495c7655c5855280bcf3e61e24d9f4ea8f54c549b5dbcc"
+}
+```
diff --git a/deps/agent-native b/deps/agent-native
index a5e3c7c8..6a1dcddb 160000
--- a/deps/agent-native
+++ b/deps/agent-native
@@ -1 +1 @@
-Subproject commit a5e3c7c817166865d75b764337b15ca7d505d131
+Subproject commit 6a1dcddb48d71844c6b66045c6dc1fff5fd53e93
diff --git a/deps/agent-squad b/deps/agent-squad
index b9a85762..bfb0834d 160000
--- a/deps/agent-squad
+++ b/deps/agent-squad
@@ -1 +1 @@
-Subproject commit b9a8576274087b539492a4b2fb9c4a316674ea7b
+Subproject commit bfb0834dd622a37b5a05825308434de005f9710f
diff --git a/modules/backend b/modules/backend
index 0637547c..bd413023 160000
--- a/modules/backend
+++ b/modules/backend
@@ -1 +1 @@
-Subproject commit 0637547cc5640d51e2d67b65ab07b184269f8371
+Subproject commit bd41302310960417e665e5387e6fce1f5644ee58
diff --git a/modules/documents b/modules/documents
index 25a561b0..3080be5d 160000
--- a/modules/documents
+++ b/modules/documents
@@ -1 +1 @@
-Subproject commit 25a561b0475a5a636e66cb9897c06ff71d72709a
+Subproject commit 3080be5de9f3535b00e180cb31eb3e621b442b20
diff --git a/modules/frontend b/modules/frontend
index c9d5acf0..cfabed8f 160000
--- a/modules/frontend
+++ b/modules/frontend
@@ -1 +1 @@
-Subproject commit c9d5acf0898dd97194953605283c7498302b3efa
+Subproject commit cfabed8fae45d1b2a516d2d8ab156c1d89770e37