iter(g61): tree 支持勾选多选与父子级联

.ua/index.json

@@ -1,6 +1,6 @@
 {
   "$schema": "ui-arch-registry-index/0.1",
-  "generatedAt": "2026-10-26T04:24:59.738Z",
+  "generatedAt": "2026-10-26T04:26:29.979Z",
   "repoRoot": ".",
   "packages": [
     {
@@ -1936,6 +1936,21 @@
                 "t": "(node: TreeNode) => void",
                 "k": 1,
                 "d": "选中回调：点击标签或 Enter/空格触发"
+              },
+              {
+                "n": "multi",
+                "t": "boolean",
+                "d": "是否显示勾选框并开启多选；缺省 false"
+              },
+              {
+                "n": "checked",
+                "t": "Signal<string[]>",
+                "d": "勾选 key 集合（multi 时生效）；不传则内部维护"
+              },
+              {
+                "n": "onCheck",
+                "t": "(keys: string[]) => void",
+                "d": "勾选变更回调（父子已级联，传副本）"
               }
             ],
             "example": "const sel = signal(''); tree({ nodes: [{ key: 'src', label: 'src', children: [{ key: 'ui', label: 'ui' }] }], selected: sel, onSelect: (n) => console.log(n.key) })",
@@ -1944,7 +1959,9 @@
               "传 selected 信号即可外部受控；不传则组件内部维护选中态",
               "点箭头只展开/收起，点标签才选中；叶子节点箭头位置留空以对齐",
               "键盘：↑↓ 在可见节点间移动、Home/End 到首末行（只移动焦点），Enter/空格 选中、→ 展开、← 收起；disabled 节点点击与键盘都不响应",
-              "defaultExpandAll 首屏展开全部分支（外部已给 expanded 初值时以外部为准）"
+              "defaultExpandAll 首屏展开全部分支（外部已给 expanded 初值时以外部为准）",
+              "multi: true 时每行前置勾选框：勾父级下钻全选子孙（跳过禁用项），子孙全选后父级自动上勾、部分勾选显示半选",
+              "勾选框点击不触发选中（stopPropagation），键盘在多选模式下 Enter/空格改为切换勾选"
             ]
           },
           {