A Harbor task suite of 2238 data-agent tasks, ordered easy -> hard by empirical
difficulty measured from a pass@4 rollout sweep (Qwen3.5-4B + 2B, bash harness).
tasks/<task_id>/{task.toml, instruction.md, environment/, tests/}
registry.json # tasks[] IN DIFFICULTY ORDER (rank 1 = easiest); each entry has rank/difficulty/solve_frac
manifest.json # full ranked table… See the full description on the dataset page:
https://huggingface.co/datasets/AdithyaSK/data_agent_rl_environment_train_difficulty_ranked.