Embed synchronized perception states in benchmark rows
Adds synchronized perception state directly to the existing 100 WGO-Bench rows. The default dataset remains the only configuration.
Each DROID/Galaxea row gains a populated nullable perception_state struct containing named source-native joint, EEF, and gripper channels. The 25 HomER rows contain null, because no robot telemetry exists. Actions are not included.
The PR pins all upstream revisions and includes SHA-256 provenance plus a reproducible embedding script. Validation preserves all 100 original IDs, instructions, segments, metadata values, and embedded video bytes; covers 75 robotic rows and 30,494 synchronized frames; and loads through the unchanged default configuration.
Validated and merged: perception_state is embedded directly in the existing 100 default rows; all original fields and video bytes are preserved.