chore(backlog): 记录 g73 完成

.ua/backlog.json

@@ -940,6 +940,14 @@
       "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）"
+    },
+    {
+      "id": "g73",
+      "title": "表格分页区补导航语义与页码播报",
+      "motivation": "底栏只是一排按钮，读屏不知道那是分页；页码/行数变化也没有播报，筛选后用户不知道结果变了",
+      "acceptance": "分页容器加 role=navigation + aria-label；页码行数文本改 role=status aria-live=polite；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：无障碍；live region 只在文本变化时播报，翻页/筛选都会触发"
     }
   ]
 }

.ua/iterations.log

@@ -117,3 +117,4 @@
 {"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"}
+{"ts":"2026-10-26T12:42:29+08:00","id":"g73","result":"done","commit":"ebd5793","summary":"表格底栏分页加 role=navigation 与 aria-label，页码行数改 role=status aria-live 播报"}