manipulation-assemble-sandwich

name	manipulation-assemble-sandwich
description	At the shared assembly workspace, use exactly one selected filling ingredient with bread to contribute to constructing the requested sandwich; when multiple workers contribute, wait until all participating workers have completed relevant ingredient acquisition and assembly-zone preparation.
metadata	{"omega-skill-id":"lift2.manipulation.assemble_sandwich","omega-contract":"references/omega-skill.yaml"}

Use this family after both robots have completed ingredient pickup and have faced the assembly zone.