- api.ts: listWorkspaceDirectories 支持 parent_path 查询; WorkspaceDirectory 增加 has_children; 同步 WorkspaceBoundApi 签名 - AuthContext: 绑定透传 parentPath - scriptWorkspaceStore: 新增 expandedPaths/loadingChildrenPaths/loadedChildPaths, loadChildren/toggleExpanded, 局部刷新 createFolder/deleteDirectory - WorkspaceTree: 移除 useState, 改为受控展开/加载状态 - ScriptExplorer: 从 store 读取并透传展开状态与 toggle