- Media: Only count video/image/audio/unknown types, not effects/recipes
- Effects: Use database count_user_items instead of filesystem scan
- Recipes: Use database count_user_items instead of loading all recipes
This ensures stats reflect user ownership via item_types table,
and prevents effects from being double-counted as media.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>