Task 10 evidence

- Updated `deployment/client.py` to mark the demo entrypoint with `# pragma: no cover`.
- Confirmed `pyproject.toml` includes `deployment/client.py` in `[tool.coverage.run].omit`.
- Ran `bash scripts/coverage.sh`; `deployment/client.py` does not appear in the coverage report.
- Confirmed `deployment/tests/test_client.py` does not exist.
- Confirmed `coverage.xml` omits `deployment/client.py`.
