chore(backlog): 记录 g60 完成

.ua/backlog.json

@@ -836,6 +836,14 @@
       "acceptance": "checkReadme 保留原始顺序并检测重复：区块重复、分组行重复（整词计数，避开 formItem 命中 form）都报错；正负向验证通过；npm run check 全绿",
       "status": "done",
       "notes": "自补：工具链改进；分组行按整词边界计数，formItem 不被 form 误伤"
+    },
+    {
+      "id": "g60",
+      "title": "新增 multiSelect 多选下拉组件",
+      "motivation": "select 只支持单选，标签多选场景只能退回 checkboxGroup（占空间）或自拼 popover；需要一个「标签式回显 + 可搜索 + 连续多选」的标准控件",
+      "acceptance": "新增 multiSelect（标签回显与删除、搜索过滤、点选不收起、max 禁用边界、↑↓/Enter/Esc、受控信号）；manifest/docs/demo/README/计数同步；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：组件补充；输入框常驻不重建，避免重绘丢焦点"
     }
   ]
 }

.ua/iterations.log

@@ -104,3 +104,4 @@
 {"ts":"2026-10-26T12:22:13+08:00","id":"g57","result":"done","commit":"fcec391","summary":"form 校验支持异步规则：validator 可返回 Promise，formItem 新增 validateAsync 并按轮次丢弃过期结论，提交期间禁用按钮"}
 {"ts":"2026-10-26T12:23:29+08:00","id":"g58","result":"done","commit":"7684ae2","summary":"新增 affix 固钉：阈值转 fixed + 外层等高占位防塌陷 + 宽度横向自适应，组件数 54→55"}
 {"ts":"2026-10-26T12:24:10+08:00","id":"g59","result":"done","commit":"9ef1b41","summary":"verify 检测 README 区块与分组行的重复组件项（整词计数），补齐文档漂移门禁"}
+{"ts":"2026-10-26T12:25:17+08:00","id":"g60","result":"done","commit":"dbdae9f","summary":"新增 multiSelect 多选下拉：标签回显/搜索/点选不收起/max 禁用边界/键盘导航，组件数 55→56"}