chore(backlog): 记录 g75 完成

.ua/backlog.json

@@ -956,6 +956,14 @@
       "acceptance": "modal/drawer 用模块级序号生成唯一标题 id 并挂 aria-labelledby，多实例不撞号；npm run check 全绿",
       "status": "done",
       "notes": "自补：无障碍；drawer 的 aria-hidden 与 open 同步逻辑未动"
+    },
+    {
+      "id": "g75",
+      "title": "评分组件键盘可达性与焦点保持",
+      "motivation": "role=slider 却不可聚焦（div 无 tabindex），keydown 只挂在首帧节点上且整体重渲染会替换节点——方向键实际按一下就失效，读屏也听不到键盘操作",
+      "acceptance": "整组 tabindex=0 可聚焦，keydown 每轮渲染重挂，重渲染后焦点归还并继续连按；补 focus-visible 光环；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：无障碍；重渲染策略保持不变（星标少，开销可忽略）"
     }
   ]
 }

.ua/iterations.log

@@ -119,3 +119,4 @@
 {"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"}
 {"ts":"2026-10-26T12:43:37+08:00","id":"g74","result":"done","commit":"640c286","summary":"modal/drawer 生成唯一标题 id 并挂 aria-labelledby，读屏能念出对话框名称"}
+{"ts":"2026-10-26T12:44:42+08:00","id":"g75","result":"done","commit":"b77eb18","summary":"评分组件补 tabindex 与每轮键绑定、重渲染后归还焦点，方向键可连按，补 focus-visible 光环"}