# Feature: OpenAI Vision Integration (PyObjC)

## Description
Implement the logic to capture a frame from the AppKit interface and send it to OpenAI's API.

## Requirements

1.  **Image Handling**:
    - On "Capture" click:
        - Stop/Pause the live feed update.
        - Store the current frame (in memory).
        - Show "Processing..." (maybe change button text or add a label).

2.  **OpenAI API Call**:
    - Async handling is important to not block the UI thread (spinning beachball).
    - Run the API request in a background thread (`threading`).
    - Model: `gpt-5-mini` (fallback `gpt-4o-mini`).
    - Prompt: "What is this item? Please provide a brief description."

3.  **Response Handling**:
    - When response returns, schedule a UI update on the main thread (`performSelectorOnMainThread:` or `dispatch_async`).
    - Print response to console (UI display comes in Spec 003).

## Acceptance Criteria

- [ ] UI remains responsive (no beachball) during API call.
- [ ] "Processing..." indication is shown.
- [ ] Image frame is correctly sent to OpenAI.
- [ ] Text response is received and printed to console.