v0.7.0

Added

• GET /azure/openai/deployments?api-version= and GET /azure/openai/deployments/{deployment}, the legacy data-plane listing, so a client can discover deployment names without leaving the endpoint it is pointed at — managing deployments on the real service moved to ARM, which a mock behind a single base URL cannot represent. One deployment per catalog model, named after the model it points at; any other name is described too, since the mock accepts any of them for inference. The reserved missing- prefix still answers DeploymentNotFound.