- Replace CivitAI-specific subfolder suggestion with broadened logic that derives candidates from model metadata, filename patterns, and existing folder structure
- Add getSuggestedModelSubfolderCandidates / getSuggestedExistingSubfolderByModelName helpers
- Normalize download category consistently via normalize_download_category in backend and frontend
- Backend now walks actual ComfyUI folder paths dynamically instead of hardcoded category mapping
- Rename frontend methods to applySuggestedDownloadSubfolder / forceSuggestedDownloadSubfolder
- Update Auto-fill subfolder tooltip to reflect expanded scope across all model categories