The previous workflow installed homebrew-pypi-poet system-wide while
dsmview lived in a venv, so poet's `import pkg_resources` resolved
against a stripped-down Python that no longer ships setuptools by
default (3.12+).
Consolidate into one step: create the venv, install setuptools/wheel
explicitly, then poet and the project, then run poet from the venv.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>