Add paired videos for 201 failed episodes across 46 tasks from the eight parallel RoboLab harness evaluation shards. Snapshot: 2026-10-02T08:11:44.882798+00:00.
Selection uses finalized episode_results.jsonl rows with success=false, including partial-score episodes. Successful episodes and unfinished episodes without a result row are excluded.
Contains 402 MP4 files (10,294,401,945 bytes) under bad_case/<TaskName>/, preserving original filenames and both the camera video and _viewport video. Each copied file matches its source SHA-256; first and last frames decode successfully. No existing dataset files are changed.
Results remain a fixed snapshot while evaluation continues; this PR does not claim all benchmark tasks have finished.
