chore(backlog): 记录 g46 完成

.ua/backlog.json

@@ -700,12 +700,38 @@
       "acceptance": "pagination({ pageSizes, onPageSizeChange }) 渲染条数切换器、切换后回第 1 页并按新条数重算总页数；跳页区只创建一次；npm run check 全绿",
       "status": "done",
       "notes": "自补：组件补充；新增 sec-pagination 演示区块"
+    },
+    {
+      "id": "g43",
+      "title": "select/menu/popover/image 的 Esc 接入统一弹层栈",
+      "motivation": "四个弹层组件各自监听 document 的 Esc：多层叠加（如 popover 内再开 image 预览）时一次 Esc 全部关闭，与 modal/drawer 的 pushOverlay 栈行为不一致",
+      "acceptance": "四个组件展开期入 Esc 栈、收起即释放；多层叠加时 Esc 后进先出逐层关闭；焦点归还触发器；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：一致性修复；复用 overlay.ts 的 pushOverlay 栈"
+    },
+    {
+      "id": "g44",
+      "title": "accordion 标题行方向键导航",
+      "motivation": "标题是原生 button 只有 Enter/Space，行间移动要靠 Tab 逐个跳，与 tabs/tree 的 ↑↓/Home/End 键盘约定不一致",
+      "acceptance": "↑↓ 在标题行间环形移动、Home/End 首尾直达，均跳过禁用行；焦点不在标题行不拦截；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：可达性对齐；复用环形回绕取模模式"
+    },
+    {
+      "id": "g45",
+      "title": "modal/drawer/image 打开时锁定背景滚动",
+      "motivation": "模态弹层开着时背景页面仍可滚动，长页面里滚动会带着遮罩底下内容跑；非模态弹层（select/menu/popover/tooltip）不受影响",
+      "acceptance": "overlay.ts 新增 lockScroll 引用计数：嵌套叠加只由最后一层还原 body；modal/drawer/image 预览接入，关闭即解锁；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：缺陷修复；引用计数避免多层同开时提前解锁"
+    },
+    {
+      "id": "g46",
+      "title": "新增 transfer 穿梭框组件",
+      "motivation": "组件库缺常规的双栏搬运组件：批量选择/授权/字段启用这类场景，调用方目前只能用两个 list + 手写搬运逻辑，勾选态与全选三态都要重复实现",
+      "acceptance": "新增 transfer（两栏由 dataSource 按 targetKeys 派生、逐栏搜索、全选含半选、禁用条目不参与、信号双向绑定）；manifest/docs/demo/README/计数同步；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：组件补充；归属只存 key，搬运只改 targetKeys，不删条目"
     }
-  ,
-    { "id": "g43", "title": "select/menu/popover/image 的 Esc 接入统一弹层栈", "motivation": "四个弹层组件各自监听 document 的 Esc：多层叠加（如 popover 内再开 image 预览）时一次 Esc 全部关闭，与 modal/drawer 的 pushOverlay 栈行为不一致", "acceptance": "四个组件展开期入 Esc 栈、收起即释放；多层叠加时 Esc 后进先出逐层关闭；焦点归还触发器；npm run check 全绿", "status": "done", "notes": "自补：一致性修复；复用 overlay.ts 的 pushOverlay 栈" }
-  ,
-    { "id": "g44", "title": "accordion 标题行方向键导航", "motivation": "标题是原生 button 只有 Enter/Space，行间移动要靠 Tab 逐个跳，与 tabs/tree 的 ↑↓/Home/End 键盘约定不一致", "acceptance": "↑↓ 在标题行间环形移动、Home/End 首尾直达，均跳过禁用行；焦点不在标题行不拦截；npm run check 全绿", "status": "done", "notes": "自补：可达性对齐；复用环形回绕取模模式" }
-  ,
-    { "id": "g45", "title": "modal/drawer/image 打开时锁定背景滚动", "motivation": "模态弹层开着时背景页面仍可滚动，长页面里滚动会带着遮罩底下内容跑；非模态弹层（select/menu/popover/tooltip）不受影响", "acceptance": "overlay.ts 新增 lockScroll 引用计数：嵌套叠加只由最后一层还原 body；modal/drawer/image 预览接入，关闭即解锁；npm run check 全绿", "status": "done", "notes": "自补：缺陷修复；引用计数避免多层同开时提前解锁" }
   ]
 }

.ua/iterations.log

@@ -90,3 +90,4 @@
 {"ts":"2026-10-26T11:57:39+08:00","id":"g43","result":"done","commit":"fc8a541","summary":"select/menu/popover/image Esc 接入统一弹层栈，多层叠加逐层关闭"}
 {"ts":"2026-10-26T12:00:19+08:00","id":"g44","result":"done","commit":"b50315b","summary":"accordion 标题 ↑↓/Home/End 环形导航，跳过禁用行"}
 {"ts":"2026-10-26T12:02:16+08:00","id":"g45","result":"done","commit":"0a0dc7a","summary":"overlay 新增 lockScroll 引用计数，模态层全关才还原 body 滚动"}
+{"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"}