fix: Makefile publish target references .venv/bin/hatch which is not installed

[marcbal77]

The make publish target in the Makefile assumes hatch is installed at .venv/bin/hatch, but hatch is not listed as a project dependency in any pyproject.toml dependency group.

Currently the workaround is to install hatch globally (pipx install hatch) and run hatch build -c && hatch publish directly.

Options to fix:

1. Add hatch to the dev dependencies in pyproject.toml
2. Update the Makefile to use a globally installed hatch instead of .venv/bin/hatch