.gitignore had `venv/` but the project's virtualenv is `.venv/`; add it plus
local-only agent/editor state so a `git add -A` can't sweep them in. Also stop
tracking four .pyc files committed before the __pycache__ ignore rule existed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
In-progress work — committing before refactor merge so git rename
detection can carry changes to new file locations.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
