Backend:
- Add XP, level, streak fields to User model
- Add tier, category, xp_reward fields to Badge model
- Create gamification service with XP, levels, streaks, badge checking
- Add gamification router with level progress, leaderboard endpoints
- Define 16 badge types across attendance, ratings, social, milestones
Frontend:
- LevelProgressCard component with XP bar and streak display
- XPLeaderboard component showing top users
- Integrate level progress into profile page
Slug System:
- All entities now support slug-based URLs
- Performances use songslug-YYYY-MM-DD format
Backend:
- Add ChaseSong model for tracking songs users want to see
- New /chase router with CRUD for chase songs
- Profile stats endpoint with heady versions, debuts, etc.
Frontend:
- ChaseSongsList component with search, add, remove
- AttendanceSummary with auto-generated stats
- Updated profile page with new Overview tab content
