- Create level_history table storing previous and new state snapshots
- Add trigger that automatically logs meaningful changes to levels
- Track change_type: update, submitted, published, rejected
- RLS policies for user and admin access to history
- Add RPC functions for querying history and entries
- Set user context in save_level_by_token for proper attribution
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
