diff --git a/.task/feature-fast-slow-u2-u3-plan.md b/.task/feature-fast-slow-u2-u3-plan.md
index 5998b57d..ad4486ae 100644
--- a/.task/feature-fast-slow-u2-u3-plan.md
+++ b/.task/feature-fast-slow-u2-u3-plan.md
@@ -9454,3 +9454,44 @@ Dev草稿PR #512及Core #31、Backend #193、Frontend #79、UI #51、Documents #
   "receipt_path": "/home/weichen/.cache/agent-system-dev/evidence/265e832fc92216e16a496061c5f0f03fcac46a8ddcb262cd68f504bdb16035db.json"
 }
 ```
+
+<!-- Local receipt: SELF. Digests detect corruption; they do not authenticate a reviewer or CI. -->
+```json
+{
+  "summary_schema": 1,
+  "source": "SELF",
+  "timestamp": "2026-10-19T03:57:28.960497+00:00",
+  "command": "make test && make build",
+  "exit_code": 2,
+  "cwd": "/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan",
+  "before_head": "e790fed6398742a32736681595823eefc358437d",
+  "after_head": "e790fed6398742a32736681595823eefc358437d",
+  "branch": "feature/fast-slow-u2-u3-plan",
+  "target_branch": "main",
+  "target_head": "7716b28cfff5200e7cfe9ec75aff5bcd71b234ed",
+  "root_target": "main",
+  "immediate_target": "main",
+  "before_tracked_diff_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+  "after_tracked_diff_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+  "output_tail": [
+    "======================================================================",
+    "FAIL: test_close_self_child_keeps_initiative_target_from_archive (test_task.TaskLifecycleTests.test_close_self_child_keeps_initiative_target_from_archive)",
+    "----------------------------------------------------------------------",
+    "Traceback (most recent call last):",
+    "  File \"/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan/tests/test_task.py\", line 1708, in test_close_self_child_keeps_initiative_target_from_archive",
+    "    self.assertIn(\"sync_target=feature/alpha\", synced.stdout)",
+    "    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^",
+    "AssertionError: 'sync_target=feature/alpha' not found in '[worktree] before-sync: recursive component checks passed\\n[worktree] before-update: recursive component checks passed\\n[worktree] materialize: recursive component checks passed\\n[worktree] after-sync: recursive component checks passed\\n[warn] 找不到分支 feature/alpha-login 的任务卡，同步记录未写入\\n[synced] sync_base=17118bde0d67f8c8637f53db7b3d12385d372ee2 tested_head=b4c6f31faff15c69b1c4920ec4270fbb6ddd1c4e checked_at=2026-10-19T04:01:55Z changed=0 sync_target=main\\n[next] 跑正式验收（make test 等），证据写入任务卡\\n'",
+    "",
+    "----------------------------------------------------------------------",
+    "Ran 513 tests in 374.869s",
+    "",
+    "FAILED (failures=1, skipped=18)",
+    "make[1]: *** [Makefile:224: test-governance] Error 1",
+    "make[1]: Leaving directory '/home/weichen/projects/Agent-System-Dev-wt-feature-fast-slow-u2-u3-plan'"
+  ],
+  "output_sha256": "a32b3675448459ee015fc49632156bec91f7f98b4ccb69f0f2587e19b2d93f51",
+  "receipt_sha256": "fe675f944e22bd433c13301cd40265f11c38b19efbf46c2e8f4077fa9d6951e8",
+  "receipt_path": "/home/weichen/.cache/agent-system-dev/evidence/fe675f944e22bd433c13301cd40265f11c38b19efbf46c2e8f4077fa9d6951e8.json"
+}
+```