Display 8 example images showcasing full HNI framework

Cache-bust to pick up new documented/implied prompt (sha 5d46aa5)

Update SAMPLE_IMAGES list to new example images

Update citation school to University of British Columbia

Cache-bust hni-vlm to pick up sklearn-optional fix

Trigger rebuild with sklearn fix

Install hni-vlm from GitHub tarball (no auth needed)

Initial Gradio demo (samples loaded from GitHub)