Make the HTTP vision provider's configuration independent of the main chat
model: the API key default moves from DEEPSEEK_API_KEY to IMAGE_RECOGNITION_API_KEY,
and the URL and model get image-recognition-specific defaults (Aliyun DashScope
compatible-mode and qwen3-vl-flash) instead of the chat model's deepseek-v4-flash.
The provider fails loud when no model is configured.
Co-Authored-By: Claude <noreply@anthropic.com>
Pine
6890e87021