Class OpenAIImageGenerationCapabilityImpl

Constructor for OpenAI image generation capability implementation.

Generates images using OpenAI Responses API (non-streaming).

Steps:

• Validates prompt
• Merges provider/model/request options
• Builds prompt and reference image content
• Sends concurrent requests if count > 1
• Normalizes and returns image output

Streaming image generation using OpenAI Responses API. Emits partial image chunks as they become available.

Note: OpenAI image generation streams lifecycle events only. Image payloads are delivered atomically once generation completes. Consumers should expect exactly one image-bearing chunk.

Steps:

• Validates prompt
• Merges provider/model/request options
• Builds prompt and reference image content
• Starts streaming generation for each image
• Yields image chunks as they are received
• Handles errors by yielding an error chunk