OpenRouter: No option to reconfigure conversation agent

[jackjourneyman]

Describe the feature

I'd like to be able to edit the conversation agent prompt in the OpenRouter integration.

Use cases

Refining the prompt is a key part of using an LLM - often an ongoing process. At the moment the only way to do it is by deleting the existing conversation agent and creating a new one, which may also involve deleting and renaming entities to fit in with existing automations etc.

Anything else?

With other integrations (OpenAI and Google Generative AI, for example) there is a cogwheel icon on the integration page allowing the user to change the configuration. This is missing for OpenRouter.