fix: renderer 模块改经 IPC+Blob URL 装载（绕开 dev http 源 CORS）；插件页改为全局/项目作用域切换

apps/desktop/src/preload/index.ts

@@ -139,6 +139,9 @@ const api = {
   // ---- 插件系统 ----
   pluginsList: (): Promise<PluginInfo[]> => ipcRenderer.invoke('plugins:list'),
   pluginsUiState: (): Promise<PluginsUiState> => ipcRenderer.invoke('plugins:uiState'),
+  pluginsDirs: (): Promise<{ user: string[]; project: string[]; global: string[] }> =>
+    ipcRenderer.invoke('plugins:dirs'),
+  pluginsReadRenderer: (id: string): Promise<string> => ipcRenderer.invoke('plugins:readRenderer', id),
   pluginsSetEnabled: (id: string, enabled: boolean): Promise<void> =>
     ipcRenderer.invoke('plugins:setEnabled', id, enabled),
   pluginsReload: (): Promise<void> => ipcRenderer.invoke('plugins:reload'),