- Add toast notification system with CSS animations for user feedback
- Add WebSocket broadcast for admin panel changes (monsters, skills, settings)
- Client auto-refreshes when admin makes changes
- Add HP/MP regen settings to admin panel (intervals, percentages, home multipliers)
- Fix SQL parameter mismatch in saveRpgStats (data_version = excluded.data_version)
- Implement optimistic updates in admin panel for immediate feedback
- Add broadcastAdminChange helper with client count logging
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>