feat: implement auth token synchronization between Electron and web app

- Added IPC channels for getting and setting auth tokens in Electron.
- Implemented functions to sync tokens from localStorage to Electron and vice versa.
- Updated components to ensure tokens are retrieved from Electron when not available locally.
- Enhanced user authentication flow by integrating token management across windows.

surfsense_desktop/src/ipc/channels.ts

@@ -32,4 +32,7 @@ export const IPC_CHANNELS = {
   FOLDER_SYNC_ACK_EVENTS: 'folder-sync:ack-events',
   BROWSE_FILES: 'browse:files',
   READ_LOCAL_FILES: 'browse:read-local-files',
+  // Auth token sync across windows
+  GET_AUTH_TOKENS: 'auth:get-tokens',
+  SET_AUTH_TOKENS: 'auth:set-tokens',
 } as const;

surfsense_desktop/src/ipc/handlers.ts

@@ -21,6 +21,8 @@ import {
   readLocalFiles,
 } from '../modules/folder-watcher';
 
+let authTokens: { bearer: string; refresh: string } | null = null;
+
 export function registerIpcHandlers(): void {
   ipcMain.on(IPC_CHANNELS.OPEN_EXTERNAL, (_event, url: string) => {
     try {
@@ -89,4 +91,12 @@ export function registerIpcHandlers(): void {
   ipcMain.handle(IPC_CHANNELS.READ_LOCAL_FILES, (_event, paths: string[]) =>
     readLocalFiles(paths)
   );
+
+  ipcMain.handle(IPC_CHANNELS.SET_AUTH_TOKENS, (_event, tokens: { bearer: string; refresh: string }) => {
+    authTokens = tokens;
+  });
+
+  ipcMain.handle(IPC_CHANNELS.GET_AUTH_TOKENS, () => {
+    return authTokens;
+  });
 }