diff --git a/.task/feature-fast-slow-u2-u3-plan.md b/.task/feature-fast-slow-u2-u3-plan.md
index 0168134c..57c0fcbb 100644
--- a/.task/feature-fast-slow-u2-u3-plan.md
+++ b/.task/feature-fast-slow-u2-u3-plan.md
@@ -94,6 +94,8 @@ r0.3第四轮复审：Backend `3f0141d` 在全新隔离 PostgreSQL 上 runmgr/ca
 
 r0.3第五轮复审与普通分析边界：独立审阅者确认Backend `badf80d` 的前两项修复，却发现“方案已获准，建议执行”可借后置“建议”进入无依据 `analysis`；该版审阅仍有 Important，不能用于付费样本。Backend `5f53f80` 为肯定批准词在谨慎词前后的反例先RED后GREEN：无结构依据的普通分析只保留几种完整审慎句式，模型自填影响/前提不照搬，其余由宿主转待确认；材料提示相应收紧并将配方升为v10。新SHA的独立审阅、PostgreSQL、浏览器、Dev组合及平台GATE仍待重新核验；已有旧版本绿色收据只对应各自SHA。真实模型仍NOT_RUN，六个PR保持草稿。
 
+r0.3最终零付费机制候选：独立只读审阅者 `/root/u3_r03_final_review` 在Backend `5f53f80` 上重跑完整Go与无付费live-tag机制集，并逐条复看此前阻断反例，结论为代码机制PASS、未发现剩余Critical/Important；这不是模型质量重放。Dev `24058c0`、Backend `5f53f80` 的全新隔离PostgreSQL runmgr/cardsvc/store三包exit0，`SELF` 收据 `/tmp/fast-slow-u3-r03-20261013/postgres-v10-receipt.json` 已由工具导入；全新任务自有二进制/PID/组件SHA核验后两项真实HTTP Playwright exit0，含待确认卡、来源变更、刷新与后台不抢文件/焦点，`SELF` 收据 `/tmp/fast-slow-u3-r03-20261013/browser-e-receipt.json` 已由工具导入，进程已停止。Documents `b776fe1` 将历史FAIL、机制PASS和真实模型NOT_RUN分别写入核验报告。仍需固定最新Dev组合、平台GATE及单独资源提案；六PR保持草稿，不合入或部署。
+
 详见modules/documents/docs/reports/2026-10-13-fast-slow-u2-u3-validation.md。历史已验组合7fd5288（Backend6a2d85c、FE3087b06、Core6e38574、UI3b34dfd、Docs53a7d37）的make test/build通过（治理311、FE224、UI156、完整后端及构建）；PG恢复和两项来源/阅读实际浏览器用例亦通过。完整SELF原始收据如下，独立代码复审已闭合，未把先前SHA冒充新对象。原六真实样本211974 reported tokens；A01/A02语义失败，A04预算耗尽保留部分发现。原始失败、引用核验与评測局限保留。
 
 ## 规划进展与下一步
@@ -6519,3 +6521,79 @@ Dev草稿PR #512及Core #31、Backend #193、Frontend #79、UI #51、Documents #
   "receipt_sha256": "e3d9fae60b1da1befcd1cfef6e1a10004c02d44490fcc8f269fcba2085c9905e"
 }
 ```
+
+<!-- Local receipt: SELF. Digests detect corruption; they do not authenticate a reviewer or CI. -->
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26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-native/deps/logging-system/deps/development-guidelines (26b562d)\n 490b0b2dfa1567cb16ff7a7230fd78e52bc2938e modules/backend/deps/agent-squad (heads/main)\n 343b1e6d9a5b58e47bf7e594826221036ae8175c modules/backend/deps/agent-squad/deps/agent-intent (heads/main)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-intent/deps/development-guidelines (26b562d)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/agent-squad/deps/agent-intent/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 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 c348441691e8bdab784a03aa9be64d53dacff341 modules/backend/deps/agent-squad/deps/agent-native (heads/main)\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 53b1abdec8fb6e799211e3896d9459bba5ae2796 modules/documents (heads/feature/fast-slow-u2-u3-plan)\n 006c81567546deb1cbd95abbb7ca6a36f99241b2 modules/frontend (v0.3.0-113-g006c815)\n ac5b617e9e7ee6b9417b36c66d7c6e3b58ecbb42 modules/ui (v0.3.0-40-gac5b617)\n"
+  },
+  "after_error": null,
+  "exit_code": 0,
+  "output": "waiting for server to start.... done\nserver started\nisolated PostgreSQL port=58941 backend=5f53f804e6cf2a575489772007d4176ac38bf65b\nok  \tagent-system-backend/internal/runmgr\t7.460s\nok  \tagent-system-backend/internal/cardsvc\t0.103s\nok  \tagent-system-backend/internal/store\t7.116s\nwaiting for server to shut down.... done\nserver stopped\n",
+  "output_sha256": "b01eb6dbbfc3d7582b30ecfeae662a229e09761aee7e92958f47d9612981ec9d",
+  "receipt_sha256": "3130f190ebbbfdadf0f95799063f07f9869a9f97b2dcf34a0979129508384d48"
+}
+```
+
+<!-- Local receipt: SELF. Digests detect corruption; they do not authenticate a reviewer or CI. -->
+```json
+{
+  "schema": 1,
+  "source": "SELF",
+  "timestamp": "2026-10-13T17:49:40.803421+00:00",
+  "command": "bash /tmp/fast-slow-u3-r03-20261013/verify-browser-e.sh",
+  "command_sha256": "c65100e201c2c8c6f6aa6958ce7c416e036614e40abbff576d1fc6b2b9f2192d",
+  "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": "24058c064b22ad52ba912ce614aafdf880f28301",
+    "branch": "feature/fast-slow-u2-u3-plan",
+    "target_branch": "main",
+    "target_head": "57bcb17ea212a531186b6e21617a7f3bea65a791",
+    "status": " M .task/feature-fast-slow-u2-u3-plan.md\n",
+    "tracked_diff_sha256": "9c4943ec3d951ad2fe72f7a4091f1a653dadb7f54d3dd94d1b0f8f767ccf8a30",
+    "untracked": {},
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modules/backend/deps/agent-native/deps/agent-intent/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-native/deps/agent-intent/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/agent-native/deps/agent-intent/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-native/deps/agent-intent/deps/logging-system/deps/development-guidelines (26b562d)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-native/deps/development-guidelines (26b562d)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/agent-native/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-native/deps/error-code-system/deps/development-guidelines (26b562d)\n 49b5d8be604d05e4246dffa0d10fa1c2b7ad45d7 modules/backend/deps/agent-native/deps/logging-system (49b5d8b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-native/deps/logging-system/deps/development-guidelines (26b562d)\n 490b0b2dfa1567cb16ff7a7230fd78e52bc2938e modules/backend/deps/agent-squad (heads/main)\n 343b1e6d9a5b58e47bf7e594826221036ae8175c modules/backend/deps/agent-squad/deps/agent-intent (heads/main)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 modules/backend/deps/agent-squad/deps/agent-intent/deps/development-guidelines (26b562d)\n a3ee67bba269e1276c14e22c026171ecf2cf6190 modules/backend/deps/agent-squad/deps/agent-intent/deps/error-code-system (a3ee67b)\n 26b562d2e34fbc560711296a309c91c74ffc55b1 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 c348441691e8bdab784a03aa9be64d53dacff341 modules/backend/deps/agent-squad/deps/agent-native (heads/main)\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 53b1abdec8fb6e799211e3896d9459bba5ae2796 modules/documents (heads/feature/fast-slow-u2-u3-plan)\n 006c81567546deb1cbd95abbb7ca6a36f99241b2 modules/frontend (v0.3.0-113-g006c815)\n ac5b617e9e7ee6b9417b36c66d7c6e3b58ecbb42 modules/ui (v0.3.0-40-gac5b617)\n"
+  },
+  "after_error": null,
+  "exit_code": 0,
+  "output": "mechanism binary and fixed SHA verified\n\n> agent-system-frontend@0.1.0 e2e\n> playwright test e2e/work-checkpoints.playwright.ts\n\n\nRunning 2 tests using 1 worker\n\n(node:432231) Warning: The 'NO_COLOR' env is ignored due to the 'FORCE_COLOR' env being set.\n(Use `node --trace-warnings ...` to show where the warning was created)\n  ✓  1 e2e/work-checkpoints.playwright.ts:33:1 › real HTTP task recovery, source navigation and changed-version limitation (1.2s)\n  ✓  2 e2e/work-checkpoints.playwright.ts:50:1 › background replay does not steal the current file, focus or viewport (1.9s)\n\n  2 passed (3.5s)\n",
+  "output_sha256": "b24077dd4f4b8bf0a02eae6cda05b1c6a194dc2b0f5b6678f851a576307b5b67",
+  "receipt_sha256": "cff2cfedee17e76e18e273f56bf797da9a5a4e4b524c012c7a55385cc98ba22a"
+}
+```
diff --git a/modules/documents b/modules/documents
index 53b1abde..b776fe1e 160000
--- a/modules/documents
+++ b/modules/documents
@@ -1 +1 @@
-Subproject commit 53b1abdec8fb6e799211e3896d9459bba5ae2796
+Subproject commit b776fe1e4dfa6953b62dd116de86eb611a23a474