Cover every G0 and G1 detection variant in the benchmark harness

[EHxuban11]

• Cover all 60 detect variants in the pinned LibreYOLO G0/G1 registry, including YOLO9-P2 and TinyFormer.
• Add list/run --groups g0 g1, validate coverage against the installed library, and return nonzero for incomplete sweeps.
• Support local PyTorch checkpoints with family/task/size/COCO-label checks; report missing P2 COCO weights instead of using VisDrone or random weights.
• Include the full inventory, a 58-model public-checkpoint command, and library pin 6a0ccc3a0e579948011d5a55200309c4082e61e7. TinyFormer is not in v1.5.0.
• Verified: 90 tests; Ruff; native-size CPU preprocess/forward/postprocess for all 60 initialized variants; real E2E-T/TinyFormer-S checkpoints scored on two COCO images.
• Not verified: all published checkpoint loads, full COCO accuracy, or Spark/CUDA execution. P2 t/s still require COCO-trained checkpoints. Website catalogue follow-up is required before submitting new families.

Code provenance

• Original first-party harness changes. Registry facts from pinned LibreYOLO model classes; no third-party code copied or adapted. No weights redistributed.