lie-on-back

name	lie-on-back
description	Lies the character down on its back (supine). Use when the user says lie on your back, lie back, get on your back, or roll onto your back.
category	posture
disable-model-invocation	true
subskills	["move-torso","move-leg","balance-and-posture"]

lie-on-back

Lie on the BACK: set posture:"lieBack" and the engine grounds the body supine on the floor. No moveTo, no root.y.

Recipes / Worked Actions (minified JSON — uses the posture/surfaces contract)

• "lie on your back" -> {"durationMs":1300,"posture":"lieBack","say":"On my back."}