config.yaml → click the pencil icon → select all → paste → Commit changes. If no config.yaml exists, use Add file → Create new file and name it exactly config.yaml.API keys never go in config.yaml. They live in Railway → your project → Variables:
| ANTHROPIC_API_KEY | sk-ant-... |
| ASSEMBLYAI_API_KEY | your AssemblyAI key |
| GMAIL_ADDRESS | you@gmail.com |
| GMAIL_APP_PASSWORD | 16-char app password |
| DIGEST_RECIPIENT | where digests are sent |