Add bot selection page with 7 personality bots, wire up game page
to play against bots via the Stockfish API, add routes and navigation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Complete chess board with piece rendering (Unicode fallback)
- Drag-to-select + legal move highlights (gold dots)
- chess.js validation for all moves including promotion
- Game over detection (checkmate, stalemate, draw)
- Result overlay with "new game" option
- Board flip button
- Resign button
- Local play mode accessible from Play page
- Fix profile XP bar padding
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

The anon key in the docs had a stale signature. Found the actual
key by inspecting Kong's declarative config on the server via SSH.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Full project scaffold with React 19, Vite, Tailwind v4, Framer Motion.
EL3AB brand colors (gold/dark theme), Cairo Arabic font, RTL layout.
Animated bottom nav, header with coin display, splash screen.
All pages scaffolded: home, play, matchmaking, profile, tournaments,
friends, leaderboard, notifications, shop, settings.
Auth flow with Supabase (login/register).
Dockerfile + nginx for CapRover deploy on port 80.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>