chore(backlog): 记录 g72 完成

.ua/backlog.json

@@ -932,6 +932,14 @@
       "acceptance": "可排序 th 用 effect 同步 aria-sort（ascending / descending / none），与箭头同源；文档手把手补一条；npm run check 全绿",
       "status": "done",
       "notes": "自补：无障碍；非 sortable 列不写 aria-sort，避免读屏误报"
+    },
+    {
+      "id": "g72",
+      "title": "文档站搜索框与结果区补无障碍语义",
+      "motivation": "生成的文档站搜索框没有可访问名（读屏只报「编辑框」），搜索后也没有结果数播报，键盘/读屏用户拿不到反馈",
+      "acceptance": "input 改 type=search + aria-label；nav 加 aria-label；新增 sr-only 的 role=status 区域，render 时播报「匹配 N 个包」与「无匹配结果」；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：无障碍（文档站产物本身）"
     }
   ]
 }

.ua/iterations.log

@@ -116,3 +116,4 @@
 {"ts":"2026-10-26T12:38:50+08:00","id":"g69","result":"done","commit":"e6cf875","summary":"修正 toggleSort 非 multi 永远停在 asc 的循环 bug 与 getPageInfo 陈旧快照，冒烟补三条不变量"}
 {"ts":"2026-10-26T12:39:32+08:00","id":"g70","result":"done","commit":"5fb61e1","summary":"冒烟补多列排序优先级、setPageSize 回首页、reset 回默认态三条不变量，断言 9 → 16"}
 {"ts":"2026-10-26T12:40:29+08:00","id":"g71","result":"done","commit":"a6d0692","summary":"数据表可排序表头补 aria-sort 三态（ascending/descending/none），与视觉箭头同源"}
+{"ts":"2026-10-26T12:41:30+08:00","id":"g72","result":"done","commit":"2aaf30f","summary":"文档站搜索框补 aria-label 与 type=search，新增 sr-only 状态区播报匹配结果数"}