- Add Practice button to BotProfilePage for quick sparring
- Fix rate limiter bug: all rateLimit() instances shared one counter map,
causing global and per-route limits to corrupt each other. Each limiter
now gets its own isolated map.
- Replace 8-digit hex colors (#ffd70066) with rgba() in sprite rendering
for mobile browser compatibility (iOS Safari renders them as black boxes)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
