- test_e2e_api.py: minimal 2-address (4-element) call to the real Google
Routes API; reads the real key from env/.env and skips on a placeholder.
- Marked `e2e` and deselected by default via addopts; run with
`pytest -m e2e`.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
