google-genai was in pyproject.toml but missing from requirements.txt.
The Dockerfile uses pip install -r requirements.txt, so the Google
provider never loaded in production. Now that the key is set and the
cloud tier upgraded to gemini-2.5-flash, the import fires on startup.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>