chore(backlog): 记录 g49 完成

.ua/backlog.json

@@ -748,6 +748,14 @@
       "acceptance": "新增 splitter（指针拖拽、键盘微调、双击复位、min 夹逼、sizes 信号受控、横纵两向）；manifest/docs/demo/README/计数同步；npm run check 全绿",
       "status": "done",
       "notes": "自补：布局基础件；两栏之和恒定，只改相邻一对"
+    },
+    {
+      "id": "g49",
+      "title": "新增 autoComplete 自动补全组件",
+      "motivation": "搜索式输入（组件名、城市、标签）目前只能用 select 的 searchable 近似，无法做到「边打边联想 + Enter 取首项」的输入法式体验",
+      "acceptance": "新增 autoComplete（输入即过滤、↑↓ 环形高亮、Enter 选中、Esc 入栈、options 函数式远程联想、空态提示）；manifest/docs/demo/README/计数同步；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：组件补充；mousedown+preventDefault 保住输入框焦点"
     }
   ]
 }

.ua/iterations.log

@@ -93,3 +93,4 @@
 {"ts":"2026-10-26T12:08:17+08:00","id":"g46","result":"done","commit":"1fe76e2","summary":"新增 transfer 穿梭框：两栏按 targetKeys 派生、逐栏搜索、全选含半选、禁用条目不参与，组件数 44→45"}
 {"ts":"2026-10-26T12:10:25+08:00","id":"g47","result":"done","commit":"d81b724","summary":"新增 cascader 级联选择：多列联动/悬停下钻/点击提交/changeOnSelect/全键盘，浏览路径与已提交路径分离，组件数 45→46"}
 {"ts":"2026-10-26T12:11:45+08:00","id":"g48","result":"done","commit":"d7bfabb","summary":"新增 splitter 可拖拽分栏：指针拖拽+方向键微调+双击复位+min 夹逼+横纵两向，组件数 46→47"}
+{"ts":"2026-10-26T12:12:56+08:00","id":"g49","result":"done","commit":"cb8a9ea","summary":"新增 autoComplete 自动补全：输入即过滤、↑↓ 环形高亮、Enter 选中、Esc 入栈、options 支持函数式远程联想，组件数 47→48"}