Parent ID filter
- **Enter "0"**: Display all top-level categories
- **Enter specific ID**: Display direct subcategories under that ID
- **Real-time filtering**: Display results immediately when entering
Category name search
- **Fuzzy search**: Enter part of the name
- **Case insensitive**: Automatically ignore case
- **Real-time search**: Display matching results immediately when entering
Combined filter
- Can use parent ID and name search at the same time
- Filter conditions will be superimposed and effective
- Clear filter conditions to restore full display