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-duplication-lesson-records.md(PR#13) — 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-duplication-lesson-records.md

@@ -1,6 +1,6 @@
 # feature/duplication-lesson-records 任务卡
 
-任务主记录：Agent-System-Documents PR#7（内容）+ 本仓 PR（gitlink 钉入，链接见下方回填）；状态：已完成；owner：weichen
+任务主记录：PR #13 https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/13（merge f20c634fea）；状态：已完成（回填）；owner：weichen
 
 ## 基线与授权
 
@@ -65,3 +65,9 @@
 | 同步前验收 | 3072611209c445a0d87d54545cfd23d2b971e177 | 957de90142bc98bde3f479092e3892754000ef15 | 2026-10-01T05:23:44Z |
 | 同步前验收 | 4c4071e5d8e256dd8f82ba9c74efa1effd1e9df3 | 0ed945956af3f10231f7d80706c798fc83617e6c | 2026-10-01T04:50:27Z |
 | 同步前验收 | 4adc4cc458f15546e5605dc55843acc26b310c41 | 916437ca2d93310ed5b4e517f99b1a787d9af843 | 2026-10-01T06:09:46Z |
+
+## 闭合记录（card-autoclose 回填）
+
+- 依据：merge f20c634fea9e4316db664b4da7b4a6c772dd855e（PR #13）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 documents with the duplication lesson and follow-up records' (#13) from feature/duplication-lesson-records 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。