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-ext-8-resource-authorizer.md(PR#265) — 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-ext-8-resource-authorizer.md

@@ -1,6 +1,6 @@
 # feature/ext-8-resource-authorizer 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 #265 https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/265（merge 7b44f61944）；状态：已完成（回填）；owner：weichen
 
 ## 基线与授权
 
@@ -81,7 +81,7 @@ hostapi 面——满足 EXT-8 验收全条前不关闭 EXT-8。
 | 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：完成（EXT-8 切片 1/2）。Backend PR #105（红 d89e748→绿：surface+装配+工件三入口
   咨询；SurfaceVersion 2.1.0-experimental）；Dev gitlink bump PR。
@@ -372,3 +372,9 @@ hostapi 面——满足 EXT-8 验收全条前不关闭 EXT-8。
   "receipt_sha256": "f3c84dc596bdb1aa8780fe3898f7662034c3b6a598e1b60ecd025e0bb509e98d"
 }
 ```
+
+## 闭合记录（card-autoclose 回填）
+
+- 依据：merge 7b44f619447a9c443895f3834603f92e65181a8a（PR #265）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 'Bump backend to the EXT-8 authorizer slice (Backend #105, supersedes #262)' (#265) from feature/ext-8-resource-authorizer 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。