nemo-rl-brev-etiquettelisted

# Brev Etiquette Operate as though `/home/ubuntu/RL` is the source checkout and `/ephemeral` is the working storage for generated experiment state. Keep the repo small, reproducible, and easy to inspect. Move bulky run outputs to `/ephemeral` before launching anything expensive. ## Storage Rules - Keep code edits, small config changes, committed experiment hypotheses, and concise reproducibility records under `/home/ubuntu/RL`. - Put generated experiment assets under `/ephemeral`, including checkpoints, run logs, Ray temp directories, W&B offline files, profiler traces, evaluation dumps, rollout samples, and per-experiment artifacts. - Keep reusable caches under one shared `/ephemeral` cache root per user, not under each experiment. This includes Hugging Face models, dataset caches, PyTorch caches, Triton caches, `uv` caches, and pip caches. - Before a campaign or long run, check capacity with `df -h /home/ubuntu/RL /ephemeral` and avoid starting if `/ephemeral` is missing or nearly full. - Create a campaign root such as `/ephemeral/nemo-rl/${USER:-ubuntu}/nemo-rl-auto-research/<campaign>` and use one subdirectory per experiment. - Do not leave large files, cache directories, or generated outputs in the git checkout. If a tool defaults to the repo, override its output/cache path before running it. ## Environment Secrets - Treat `/home/ubuntu/RL/.env` as the local secret store. It may contain keys such as `WANDB_API_KEY`, `HF_TOKEN`, or `HUGGING_FACE_HUB_TOKEN`. - Before