fix(lint): exclude nox/venv/cache dirs from interrogate scan (#24)

interrogate had no path arg and only excluded tests/docs/noxfile.py,
so local .nox venvs, .venv, and cache dirs (full of vendored pip
packages with no docstrings) got scanned and tanked coverage below
the 100% gate. CI checks out fresh with none of these dirs so it
never hit this. Widen the exclude list to match local reality.


Claude-Session: https://claude.ai/code/session_01HpUiyz1W779QxRBzRxXZzc

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

Author: dlstadther

pyproject.toml

@@ -50,7 +50,7 @@ packages = ["src/sample"]
 fail-under = 100
 ignore-init-method = true
 verbose = 1
-exclude = ["tests", "docs", "noxfile.py"]
+exclude = ["tests", "docs", "noxfile.py", ".nox", ".venv", "dist", "build", ".mypy_cache", ".pytest_cache", ".ruff_cache"]
 
 
 #######