train: tighten Colab notebook (drop redundant cell, simplify section 5)

train: simplify Colab notebook (drop redundant cells)

cleanup: trim verbose comments, drop dead code, fix stale tests, proper Dockerfile + .gitignore

W&B disclaimer: point users to their own account, drop hardcoded entity URL

W&B disclaimer: point users to their own account, drop hardcoded entity URL

W&B disclaimer: point users to their own account, drop hardcoded entity URL

notebook: W&B disclaimer points users to their own account, not the author's

notebook: add W&B disclaimer banner before SFT and GRPO subprocess launches

notebook: visible pip install + sys.path refresh + import verify

notebook: pull from Space repo (not stale dataset), default profile=3b

openenv push: sync full repo

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Upload folder using huggingface_hub

cleanup: strip verbose comments from train/job_train.py

ui: status banner + endpoint guide for physix-infer cold-start

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