diff --git a/.task/feature-fast-slow-u2-u3-plan.md b/.task/feature-fast-slow-u2-u3-plan.md
index cea6f4e6..3fce0595 100644
--- a/.task/feature-fast-slow-u2-u3-plan.md
+++ b/.task/feature-fast-slow-u2-u3-plan.md
@@ -9629,3 +9629,44 @@ Dev草稿PR #512及Core #31、Backend #193、Frontend #79、UI #51、Documents #
   "receipt_path": "/home/weichen/.cache/agent-system-dev/evidence/5ddb1399ab22310497cff99af4c2fa15e2296a8f98f8cc75451b0344441f9e1f.json"
 }
 ```
+
+<!-- Local receipt: SELF. Digests detect corruption; they do not authenticate a reviewer or CI. -->
+```json
+{
+  "summary_schema": 1,
+  "source": "SELF",
+  "timestamp": "2026-10-19T09:29:27.906411+00:00",
+  "command": "make task-sync",
+  "exit_code": 0,
+  "cwd": "/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan",
+  "before_head": "1134acb050d2e1640bc690ef848d3413b500de1e",
+  "after_head": "1134acb050d2e1640bc690ef848d3413b500de1e",
+  "branch": "feature/fast-slow-u2-u3-plan",
+  "target_branch": "main",
+  "target_head": "198d1891e4310e0af09b903a4a14ce00dbda2e79",
+  "root_target": "main",
+  "immediate_target": "main",
+  "before_tracked_diff_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+  "after_tracked_diff_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+  "output_tail": [
+    "[evidence] WARN JSON receipt line 9160: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9198: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9236: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9274: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9312: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9350: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9388: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9429: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9470: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9511: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9552: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[evidence] WARN JSON receipt line 9593: recorded HEAD predates non-card changes ——关键检查须重跑并以 make evidence 重新写入",
+    "[synced] sync_base=198d1891e4310e0af09b903a4a14ce00dbda2e79 tested_head=1134acb050d2e1640bc690ef848d3413b500de1e checked_at=2026-10-19T09:30:23Z changed=0 sync_target=main",
+    "[next] 跑正式验收（make test 等），证据写入任务卡",
+    "make[1]: Leaving directory '/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan'"
+  ],
+  "output_sha256": "190b441423753a90f3e3d8e640d75956926ea76b87a2bc5116c4c124c2db456f",
+  "receipt_sha256": "241bf174c197efe9ac8f5cbf03750ca61edd4c836696ac9e29752ef82a469370",
+  "receipt_path": "/home/weichen/.cache/agent-system-dev/evidence/241bf174c197efe9ac8f5cbf03750ca61edd4c836696ac9e29752ef82a469370.json"
+}
+```