chore(backlog): 记录 g32 完成

.ua/backlog.json

@@ -618,8 +618,8 @@
       "title": "tree 补 ↑↓/Home/End 行间导航",
       "motivation": "tree 只支持 Enter/→/←，无法用键盘在节点间移动焦点，键盘用户仍得靠鼠标找行",
       "acceptance": "↑↓ 在当前可见节点间移动、Home/End 到首末行，只改焦点不改选中，收起分支的子节点不参与遍历；npm run check 全绿",
-      "status": "open",
-      "notes": "自补：既有组件可用性细节"
+      "status": "done",
+      "notes": "自补：既有组件可用性细节；NodeList 需 Array.from 展开（downlevel 迭代）"
     }
   ]
 }

.ua/iterations.log

@@ -76,3 +76,4 @@
 {"ts":"2026-10-26T11:40:10+08:00","id":"g29","result":"done","commit":"e5ed297","summary":"新增 carousel 轮播：横排位移 + 指示点/箭头/←→ 键 + autoplay 悬停暂停 + 环形回绕，组件数 39→40"}
 {"ts":"2026-10-26T11:41:05+08:00","id":"g30","result":"done","commit":"1a161d6","summary":"check 链加入 demo 构建，verify 新增产物锚点校验（负向删除锚点即失败）"}
 {"ts":"2026-10-26T11:42:29+08:00","id":"g31","result":"done","commit":"4b0dbfe","summary":"新增 tree 树形：递归节点 + 箭头展开收起 + 点选/Enter/→/← 键盘 + 禁用不响应，组件数 40→41"}
+{"ts":"2026-10-26T11:43:15+08:00","id":"g32","result":"done","commit":"097f79f","summary":"tree 补 ↑↓/Home/End 行间导航：只移焦点不改选中，收起分支子节点不参与遍历"}