0a0dde3d50
Implements user profile data model and own-profile management endpoints: - Profile and ProfileFavorites models in backend/app/models/profile.py - Migration 0010_add_profile_tables.py (profiles, profile_favorites) - Endpoints in backend/app/routers/profiles.py: - GET /api/profile/me (own profile with default fallback) - PUT /api/profile/me (upsert bio, avatar_asset_id, privacy settings) - GET /api/profile/me/favorites (list favorite world IDs) - PUT /api/profile/me/favorites (replace favorite world IDs) - Fixes values_callable on Asset.asset_type ENUM in app/models/asset.py - Added test_profile.py covering auth, validation, favorites, privacy Independently re-verified: 19/19 new profile tests pass, 258/258 full backend regression suite passes with zero regressions.