Senko-san
538cfb9c5b
Add a login/register toggle to ConnectPage backed by a new useRegisterMutation (register -> /auth/me, mirroring login). The toggle is shown only when REGISTRATION_ENABLED, resolved with the same precedence as the API base URL: runtime window.__APP_CONFIG__ > PUBLIC_ENABLE_REGISTRATION env > default true. The prod runtime-config script injects the runtime flag. The backend's ALLOW_REGISTRATION stays the real authority; this only gates the UI. EN/RU strings added. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>