Close 1 merged task card(s) and archive them

Why: branches merged into main had left their task cards open; backfill status and archive to prevent bookkeeping debt.
Evidence: feature-agent-professional-deliverables.md(PR#126) — merges verified via git log --merges against origin/main.
Impact: .task/*.md moved to .task/archive/ with status backfilled; no code or submodule change.
Refs: task.sh close (card-autoclose-r1)

.task/archive/feature-agent-professional-deliverables.md

@@ -1,6 +1,6 @@
 # feature/agent-professional-deliverables 任务卡
 
-任务主记录：https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/126 ；状态：进行中；owner：weichen
+任务主记录：https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/126 ；状态：已完成（回填）；owner：weichen
 
 ## 基线与授权
 
@@ -28,3 +28,9 @@
 - 影响与剩余项：Backend PR #38 已合入（merge 2079b2dfa851bd4cbe8f399a015126c842c441ec）。本分支推进 gitlink 到该提交。样例文档仍留在主检出 .tmp，不入库。工件卡片上的“设为默认模板”按钮仍不在本次范围。
 | 同步前验收 | 6f7f4a0e7858c70261d7bbeb179f5eb59303f956 | 2e8b9face3542844319f4a545768b6cf04c126a5 | 2026-10-01T08:19:31Z |
 | 同步前验收 | 6f7f4a0e7858c70261d7bbeb179f5eb59303f956 | f41ad95b1c5c9d2c415a12a64ac1f1551cd7b6af | 2026-10-01T08:20:22Z |
+
+## 闭合记录（card-autoclose 回填）
+
+- 依据：merge 28174a67524849084823e16791d498c1dcdcb77a（PR #126）已包含于 origin/main，分支成果已落盘；本段为合入后回填。
+- 合并主题：Merge pull request 'Pin backend professional deliverable standards' (#126) from feature/agent-professional-deliverables into main
+- 归档：随闭合移入 .task/archive/；任务执行期的过程证据见原任务记录与 PR。