- Created puzzles table in Supabase with RLS
- Seeded 20 Arabic chess puzzles (rating 500-1400)
- Fixed daily puzzle offset (was % 100, now % actual count)
- Added puzzle_rating, puzzle_streak, best_puzzle_streak to profiles
- Fixed ELO defaults (new profiles now get 1200 instead of 0)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>