- Create LevelEditor.svelte with permission-gated level list
- Create LevelEditForm.svelte for editing level metadata
- Add getAllLevelsForAdmin() and updateLevelAsAdmin() to CloudLevelService
- Add /editor/:levelId route to App.svelte
- Show Level Editor link in header only for admins with canManageOfficial
- Add migration to use internal UUID for admins table
- Fix auth0_sub -> auth0_id column name in supabaseService
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
