fix: meta/info.json splits → 0:9126 and normalize to canonical feature schema

fix: uniformize meta/episodes schema to canonical 23-col layout (drop stats/*, add chunk/file_index)

fix: remap annotation.human.task_name/task_description to global task-table indices (7 files)

Dataset card: stats + collection link

Dataset card: viewer config + MIT license

Add dataset card + HF viewer config

Merge v3.0 flat dataset from nested source

initial commit