- Add CheckpointScanner dependency to RecipeScanner singleton
- Implement checkpoint enrichment in recipe data processing
- Add _enrich_checkpoint_entry method to enhance checkpoint metadata
- Update recipe formatting to include checkpoint information
- Extend get_instance, __new__, and __init__ methods to support checkpoint scanner
- Add _get_checkpoint_from_version_index method for cache lookup
This enables recipe scanner to handle checkpoint models alongside existing LoRA support, providing complete model metadata for recipes.