- Introduced OpenAI-compatible image model support in the API, enabling integration through image generation and editing endpoints. - Added registry type for OpenAIImageModelType to classify and validate compatibility. - Implemented request handling for OpenAI-compatible image models, including JSON and multipart formats. - Enhanced executor methods to support OpenAI-compatible image streaming and non-streaming requests. - Included tests to validate model registration, streaming behavior, and multipart payload formatting.