The Windows terminal failed with "No module named 'winpty'" because the
pywinpty dependency was declared only in pyproject.toml. The documented
git-clone install and ComfyUI-Manager both rely on requirements.txt, which
didn't exist, so pywinpty was never installed on Windows.
- Add requirements.txt with `pywinpty; sys_platform == "win32"`.
- Raise an actionable error (with the exact `pip install pywinpty` command)
when pywinpty is missing, instead of leaking a cryptic ImportError to the UI.
- Update README install steps to install dependencies; drop the inaccurate
"installed automatically" claim.
- Bump to 0.4.3 and align __init__ __version__ (was stale at 0.3.0).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
