chore(backlog): 记录 g112 完成

.ua/backlog.json

@@ -1259,7 +1259,7 @@
       "motivation": "「已删除 3 条记录」这种提示最常见的下一步就是撤销，现在只能干看着它 3 秒后消失，要撤销得自己去列表里找回来；toast 只有 closable 一个交互出口",
       "acceptance": "ToastProps 新增 actionLabel 与 onAction：传了文案才渲染操作按钮（accent 色、hover 下划线、focus-visible 有环），点后先收起再回调；带操作按钮的 toast 接收指针事件（原来只有 closable 才接收），悬停暂停逻辑不变；文档参数表 / 手把手 / api 说明与演示（「带撤销」按钮，5s）同步；npm run check 全绿",
       "notes": "自补：可用性；沿用现有 dismiss，不新增公开 API",
-      "status": "open"
+      "status": "done"
     }
   ]
 }

.ua/iterations.log

@@ -156,3 +156,4 @@
 {"ts":"2026-10-26T14:02:01+08:00","id":"g109","result":"done","commit":"1bf35da","summary":"tooltip 触摸屏改为按下即出、抬手延迟 1.2s 收，鼠标/键盘路径不变"}
 {"ts":"2026-10-26T14:03:25+08:00","id":"g110","result":"done","commit":"e042143","summary":"select 新增 clearable：有值显 ×（Delete/Backspace 亦可清），复位到未选态"}
 {"ts":"2026-10-26T14:04:44+08:00","id":"g111","result":"done","commit":"f40ef6d","summary":"breadcrumb 新增 maxItems：首项+「…」+末几项，点开完整展开，末项恒为当前页"}
+{"ts":"2026-10-26T14:05:44+08:00","id":"g112","result":"done","commit":"5372fdd","summary":"toast 新增 actionLabel/onAction：撤销按钮点后先收起再回调"}