This commit addresses the accidental deletion of requirements.txt and improves the overall installation process for better stability and user experience.
- Restored requirements.txt with a refined dependency list, excluding torch to prevent conflicts with ComfyUI's managed environment.
- Replaced the setup.py-based installation with a robust install.py script that checks for existing packages and only installs missing ones, avoiding unintended upgrades.
- Added #egg= fragments to git dependencies for reliable package identification.
- Updated INSTALLATION_GUIDE.md to reflect the new automatic model downloading, lower VRAM requirements, and memory-saving features.