feat(browser): 受管浏览器代理设置（profile 导入已有实现，本轮补全代理）

apps/desktop/src/preload/index.ts

@@ -4,6 +4,7 @@ import type {
   AppSettings,
   AttachmentInfo,
   BrowserImportResult,
+  BrowserProxySettings,
   BrowserSource,
   BrowserUiEvent,
   BrowserUiState,
@@ -129,6 +130,9 @@ const api = {
   browserDetectSources: (): Promise<BrowserSource[]> => ipcRenderer.invoke('browser:detectSources'),
   browserImportProfile: (sourceId: string, profileDir: string): Promise<BrowserImportResult> =>
     ipcRenderer.invoke('browser:importProfile', sourceId, profileDir),
+  browserGetProxy: (): Promise<BrowserProxySettings> => ipcRenderer.invoke('browser:getProxy'),
+  browserSetProxy: (input: BrowserProxySettings): Promise<BrowserProxySettings> =>
+    ipcRenderer.invoke('browser:setProxy', input),
   onBrowserEvent: (callback: (event: BrowserUiEvent) => void): (() => void) => {
     const listener = (_e: Electron.IpcRendererEvent, event: BrowserUiEvent): void => callback(event)
     ipcRenderer.on('browser:event', listener)