feat: replace browser login with imported Reddit sessions

src/services/chat/index.ts

@@ -17,12 +17,7 @@ export type {
 } from './types.js';
 export { MatrixClient, MatrixAuthError } from './matrix/client.js';
 export type { MatrixCredentials } from './matrix/types.js';
-export {
-  extractMatrixCredentials,
-  loadCachedCredentials,
-  MatrixBrowserLoginRequiredError,
-  saveCredentials,
-} from './matrix/token-extractor.js';
+export { loadCachedCredentials, saveCredentials } from './matrix/credential-store.js';
 export {
   MatrixRemoteLoginRequiredError,
   MatrixTokenRefresher,