- Replaced direct calls to `venv/bin/pip` with `python -m pip` to avoid execution errors on network mounts and improve compatibility.
- Introduced a new function `find_comfy_python` to locate the appropriate Python executable for ComfyUI installations.
- Updated the `pip_install_sage` function to utilize the new Python handling, enhancing installation reliability.
- Added tests to verify the new behavior of Python environment detection and installation processes, ensuring robustness.
