chore(backlog): 记录 g302 完成

.ua/backlog.json

@@ -3108,11 +3108,11 @@
     {
       "id": "g302",
       "domain": "tune",
-      "status": "open",
+      "status": "done",
       "title": "dataTable 接上内核的多列排序：Shift+点击叠加第二列",
       "motivation": "table-core 的 toggleSort 早就支持 action.multi（按 rules 顺序逐列比较），但皮肤层 dispatch 时从不传 multi，用户按住 Shift 点第二个表头毫无反应，多列排序只能靠手写 setSorting；表头标记也只反映单列方向，看不出比较优先级。",
       "acceptance": "① 表头点击与键盘 Enter / 空格都读 shiftKey 并透传 multi；② 参与排序的列 ≥ 2 时标记追加优先级序号（↑1 / ↓2），单列时保持原箭头；③ manifest 手把手与 demo 描述同步；④ npm run check 全绿。",
-      "notes": ""
+      "notes": "th 的 toggle 收 multi 参数，onClick / onKeydown 都读 shiftKey；sortMark 在 rules ≥ 2 时追加优先级序号（↑1 / ↓2），单列保持原箭头；manifest 步骤与 demo 描述同步"
     }
   ]
 }

.ua/iterations.log

@@ -346,3 +346,4 @@
 {"ts": "2026-10-26T23:40:33+08:00", "id": "g299", "result": "done", "commit": "9d44199", "summary": "视觉抽查清单扩到十六段（补命令面板 / 通知条 / 环形进度），下限随之 39→48 条"}
 {"ts":"2026-10-27T00:26:00+08:00","id":"g300","result":"done","commit":"c013998","summary":"toast 悬停暂停生效：指针落到卡片本体、pause/resume 钳制剩余、键盘聚焦同口径"}
 {"ts":"2026-10-27T00:29:06+08:00","id":"g301","result":"done","commit":"ed3b863","summary":"新增 sortableList（88 组件）：整行可拖 + Alt+↑↓ 键盘搬位，顺序写回信号，仅消费令牌"}
+{"ts":"2026-10-27T00:30:36+08:00","id":"g302","result":"done","commit":"9cb953e","summary":"表头 Shift+点击接上内核多列排序，标记带优先级序号"}