add README.md (SmolVLA CubeStack 3-client)

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license: apache-2.0
base_model: lerobot/smolvla_base
library_name: lerobot
pipeline_tag: robotics
tags:
  - robotics
  - vla
  - smolvla
  - lerobot
  - decent-vla
  - cube-stacking
  - so-101
  - federated

SmolVLA CubeStack — FedAvg 3-client (global)

Federated global model: FedAvg over 3 color-pair clients, 50 rounds x 250 local steps, full fine-tune. Shared pooled-6-repo normalizer. The FL method point vs the centralized ceiling. Final train loss 0.0108.

lerobot-native export (portable config, real 6-D action/state). SO-101 CubeStack, cameras camera1 (front) / camera2 (wrist), camera3 zero-filled. Trained on Isambard-AI (GH200) with decent-vla. Part of the 3-client SmolVLA CubeStack federated study — SAME color-pair non-IID partition as the pi0.5 3-client study (c0=harry Green/Orange, c1=zhekai Green/Blue, c2=kevin Orange/Blue; each client blind to the 3rd color). TRUE full fine-tune (unfrozen VLM, no LoRA), SmolVLA LIBERO recipe (lr 1e-4, cosine, batch 32, grad-clip 10).