Auto-navigate to room panel on rejoin and bump relay to v4

Fix study room disappearing on page refresh

Add debug logging and bump relay version to v3

Add 15s reconnect grace period on relay server

Add room persistence on reload and leaderboard

Replace broken SVG sprites with clean emojis

Scale pet XP rewards for longer study sessions

Fix login robustness with error handling

Replace emoji pets with custom kawaii SVG sprites

Make pet UI much cuter with glows, sparkles, and animations

Fix bird line to be a consistent eagle evolution

Add choosable pet types with consistent evolution lines

Use cuter pet sprites with proper egg for stage 1

Add Study Pet gamification system with evolution stages

Add Focus Lock distraction prevention feature