FR-3: Vision API Integration (Minimax)

• The relay sends the image to Minimax’s vision endpoint
• The API key is already available (the user has a token plan)
• The payload must include the image (base64 or URL, depending on Minimax’s API format) and a prompt
• Recommended prompt: “Describe this image in one concise sentence.”
• The response is parsed to extract the description text
• If the API returns an error (rate limit, invalid key, model unavailable), the error is logged and the client shows a failure state
• The API call must have a timeout (e.g., 15 seconds)