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: fix-ext-5-wide-cols.md(PR#224) — 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/fix-ext-5-wide-cols.md

@@ -1,6 +1,6 @@
 # fix/ext-5-wide-cols 任务卡
 
-任务主记录：<PR 链接，交付前填写>；状态：进行中；owner：weichen
+任务主记录：PR #224 https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/224（merge c4985e96ce）；状态：已完成（回填）；owner：weichen
 
 ## 基线与授权
 
@@ -27,7 +27,7 @@
 | 时间(UTC) | 命令 | 被测HEAD | exit | 来源 | sha256(16) |
 |---|---|---|---|---|---|
 
-## 结果与验证（完成后填写）
+## 结果与验证
 
 - 结果：
 - 验证：<结论摘要 PASS/FAIL/SKIP/NOT_RUN 逐项；逐条证据由 make evidence 写入上方证据表>
@@ -147,3 +147,9 @@
   "receipt_sha256": "92a3b43a9cf3c419d3ae1431b135b9b2a6d0e72ab53f3c0082832d693df256cc"
 }
 ```
+
+## 闭合记录（card-autoclose 回填）
+
+- 依据：merge c4985e96ce1c49da88f652e9a2d8ac2bec4a8b01（PR #224）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 the wide-columns xlsx fix' (#224) from fix/ext-5-wide-cols 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。