POL-10: Add rules table

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

backend/app/models/__init__.py

@@ -1,14 +1,24 @@
 from app.models.user import User, RefreshToken
+from app.models.organization import Organization
 from app.models.championship import Championship
 from app.models.registration import Registration
 from app.models.participant import ParticipantList
 from app.models.notification import NotificationLog
+from app.models.discipline import Discipline
+from app.models.style import Style
+from app.models.fee import Fee
+from app.models.rule import Rule
 
 __all__ = [
     "User",
     "RefreshToken",
+    "Organization",
     "Championship",
     "Registration",
     "ParticipantList",
     "NotificationLog",
+    "Discipline",
+    "Style",
+    "Fee",
+    "Rule",
 ]