- 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>