diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/check.jsonl b/.trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/check.jsonl
similarity index 100%
rename from .trellis/tasks/05-28-oa-policy-acknowledgement-v1/check.jsonl
rename to .trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/check.jsonl
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/design.md b/.trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/design.md
similarity index 100%
rename from .trellis/tasks/05-28-oa-policy-acknowledgement-v1/design.md
rename to .trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/design.md
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/implement.jsonl b/.trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/implement.jsonl
similarity index 100%
rename from .trellis/tasks/05-28-oa-policy-acknowledgement-v1/implement.jsonl
rename to .trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/implement.jsonl
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/prd.md b/.trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/prd.md
similarity index 100%
rename from .trellis/tasks/05-28-oa-policy-acknowledgement-v1/prd.md
rename to .trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/prd.md
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json b/.trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/task.json
similarity index 94%
rename from .trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json
rename to .trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/task.json
index 9ca73cfb..e5aaf26c 100644
--- a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json
+++ b/.trellis/tasks/archive/2026-05/05-28-oa-policy-acknowledgement-v1/task.json
@@ -3,7 +3,7 @@
   "name": "oa-policy-acknowledgement-v1",
   "title": "制度签收轻量回执",
   "description": "在现有公告中心上增加轻量制度签收回执，支持管理员发布必签制度公告、员工显式签收、管理员查看签收统计和审计留痕。",
-  "status": "in_progress",
+  "status": "completed",
   "dev_type": "feature",
   "scope": "server-client-prisma-announcements-policy-acknowledgement",
   "package": "hyb-oa",
@@ -11,7 +11,7 @@
   "creator": "shunli",
   "assignee": "shunli",
   "createdAt": "2026-05-28",
-  "completedAt": null,
+  "completedAt": "2026-05-28",
   "branch": null,
   "base_branch": "main",
   "worktree_path": null,