Shiki42/ctr-pick-dual-bottles-uniform50-20260917

IdleMask review — passed (2026-09-19) Reviewed by the dataset owner: observation.arm_active_mask is correct under the approved prefix-only rule. This section supersedes previous active/idle-mask descriptions below. For each of the 50 episodes and each physical arm, only the initial contiguous wait before its first active sample may have mask 0. From the first active sample through the final frame, the mask is always 1, including intermediate waits, terminal holds, and repeated… See the full description on the dataset page: https://huggingface.co/datasets/Shiki42/ctr-pick-dual-bottles-uniform50-20260917.