card: what the two artefacts are, which gates they pass, and on what

publish the identifier sidecar the P12 canonical run earned (may_ship: true)

latency v1 on Kaggle CPU kernel: validator p50 34.4 ms, identifier p50 22.8 ms

identifier v1: test top1=1.0000

identifier v1: test top1=1.0000

identifier v1: test top1=1.0000

identifier v1: test top1=1.0000

validator v1: test mAP50=0.7524

validator v1: test mAP50=0.7524

validator v1: test mAP50=0.7524

validator v1: test mAP50=0.7524

initial commit