Replace nine images whose live Flickr pages no longer show CC BY or CC BY-SA, preserve the 89/39 license balance, and clarify immediate-source provenance for the Ultralytics coco128 files.
Prepare licensed COCO 128 subset for publication (#1)
128 COCO train2017 images: 88 CC BY 2.0 and 40 CC BY-SA 2.0. Includes YOLO labels, COCO annotations, license manifest, checksums, dataset card, and deterministic generator.
