fix: S1 安全冲刺——切库清空标签页+冲刷(FR-V6)、重命名/移动同步标签页路径(FR-T7)、默认库路径设置页(FR-V5)；vaultBrowse IPC+pickDirectory；tab-store closeAll/renamePath；store resetEditor/syncCurrentPath；safety E2E 2 项

packages/shared/src/types/ipc.ts

@@ -9,6 +9,7 @@ export const IPC = {
   vaultSwitch: 'vault:switch',
   vaultSetDefault: 'vault:set-default',
   vaultPick: 'vault:pick',
+  vaultBrowse: 'vault:browse',
   treeList: 'tree:list',
   treeRefresh: 'tree:refresh',
   fileCreate: 'file:create',
@@ -40,6 +41,7 @@ export interface IpcMap {
   [IPC.vaultSwitch]: { args: { root: string }; result: VaultMeta };
   [IPC.vaultSetDefault]: { args: { root: string }; result: void };
   [IPC.vaultPick]: { args: void; result: VaultMeta | null };
+  [IPC.vaultBrowse]: { args: void; result: string | null };
   [IPC.treeList]: { args: void; result: TreeNode[] };
   [IPC.treeRefresh]: { args: void; result: TreeNode[] };
   [IPC.fileCreate]: { args: { basePath: string; name: string; isFolder: boolean }; result: { path: string } };