Telegram deprecated the data-auth-url redirect flow, which returns a
blank page with "deprecated" text. Switch both TelegramLinkWidget
(account linking) and TelegramLoginButton (legacy login) to use
data-onauth callback approach that works client-side without redirects.
- Add loading state on button click (not just after callback)
- Add onerror handler for script load failure
- Disable button until OIDC script is loaded
- Replace useCallback with ref pattern to prevent stale closures and
unnecessary Telegram.Login.init() re-calls
- Make isOIDC a proper boolean with Boolean() wrapper
- Clear previous error on successful login attempt
- Remove hardcoded fallback string from t() call
- Add oidc_enabled/oidc_client_id to TelegramWidgetConfig interface and fallback
- Add loginTelegramOIDC API method for id_token auth
- Add loginWithTelegramOIDC to auth store
- Rewrite TelegramLoginButton: OIDC popup when enabled, legacy widget otherwise
- Extend Window.Telegram type with Login SDK in vite-env.d.ts
- Upgrade telegram-widget.js from v22 to v23 (TelegramLoginButton + ConnectedAccounts)
- TelegramLoginButton fetches widget config from API instead of hardcoded values
- Add TelegramWidgetConfig type and API method with fallback to env defaults
- Remove botUsername prop — now sourced from backend API
- Add useEffect cleanup to prevent orphaned iframes on unmount
- Add TELEGRAM_WIDGET category to admin interface settings menu
- Add i18n translations for widget settings (ru, en, zh, fa)
Mirrors campaign.ts localStorage pattern to capture ?ref= from URL and pass
referral_code to backend during Telegram Widget, OAuth, email login, and
Mini App authentication. Fixes redirect loop when email auth is disabled.
