Gemini API Configuration

Use the gemini-api-key parameter to configure Gemini API keys. Each entry accepts optional base-url, headers, and proxy-url values; headers are only attached to requests sent to the overridden Gemini endpoint and are never forwarded to proxy servers. The legacy generative-language-api-key endpoint exposes a mirrored, key-only view for backwards compatibility—writes through that endpoint update the Gemini list but drop any per-key overrides, and the legacy field is no longer persisted in config.yaml.