UNIVRSLL Image Finder v8

Install:
    pip install -r requirements.txt

Run:
    python univrsll_image_finder.py

New in v8:
- Search runs in a background worker thread.
- Preview thumbnails load in a separate background worker.
- The Command Center can keep animating while results/previews load.
- The main window stays more responsive during long searches.

Tip:
For more random and diverse results, search for more images than you need. Example: if you need 10 final images, search for 50-80 and select the best ones.
