Complete PLDM PushT five-seed planning evaluation and report mean/std

Archive PLDM PushT final epoch-10 checkpoint before evaluation

Complete PLDM Cube five-seed planning evaluation and report mean/std

Consolidate final and intermediate PLDM Cube checkpoints under pldm/cube

Add checkpoint provenance, configurations, licenses and five-seed results

Archive DINO-WM PushT, intermediate PLDM Cube and completed seed results