Clear project — starting fresh from spec

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/models/__init__.py

@@ -1,15 +0,0 @@
-from app.models.user import User
-from app.models.refresh_token import RefreshToken
-from app.models.championship import Championship
-from app.models.registration import Registration
-from app.models.participant_list import ParticipantList
-from app.models.notification_log import NotificationLog
-
-__all__ = [
-    "User",
-    "RefreshToken",
-    "Championship",
-    "Registration",
-    "ParticipantList",
-    "NotificationLog",
-]