chore(backlog): 记录 g161 完成

.ua/backlog.json

@@ -1644,6 +1644,14 @@
       "acceptance": "slider 新增 range / end / onRangeChange：两条原生 range 叠轨、只有拇指可命中，强调色画出已选段，越界自动压平保证 low ≤ high，右侧显示「低 ~ 高」；单值路径不变；manifest props 表与步骤、llms-full 同步；npm run check 全绿。",
       "notes": "",
       "status": "done"
+    },
+    {
+      "id": "g161",
+      "title": "通知支持同 key 原地更新",
+      "motivation": "异步任务（上传/导出/同步）要把一条通知从 0% 刷到 100%，此前只能再调一次 notification，结果右上角堆出三条互不相干的卡，MAX_STACK=3 还会把别的通知挤掉。",
+      "acceptance": "notification 新增 key 入参：同 key 二次调用原地改标题 / 描述 / 语义色并返回同一句柄；句柄新增 update(partial)，close 时释放 key 登记；演示页加三拍进度演示；manifest props 表与步骤、llms-full 同步；npm run check 全绿。",
+      "notes": "",
+      "status": "done"
     }
   ]
 }

.ua/iterations.log

@@ -205,3 +205,4 @@
 {"ts":"2026-10-26T16:00:46+08:00","id":"g158","result":"done","commit":"638f623","summary":"datePicker 新增 presets 快捷区间（days 相对今天 / from-to 绝对日期，min-max 钳制）"}
 {"ts":"2026-10-26T16:02:24+08:00","id":"g159","result":"done","commit":"312e801","summary":"multiSelect 新增 maxTagCount 标签折叠（+N 虚线条目，悬停看全量、点击展开）"}
 {"ts":"2026-10-26T16:03:56+08:00","id":"g160","result":"done","commit":"ef564fc","summary":"slider 新增 range 双滑块（叠轨 + 已选段，越界自动压平）"}
+{"ts":"2026-10-26T16:05:06+08:00","id":"g161","result":"done","commit":"0bcf73f","summary":"notification 支持 key 复用与 update 原地改标题/描述/语义色"}