xr_edit

Selecting and moving things with the pointing hand in a headset.

Gesture	Result
Click the trigger on an object	selects it (the viewport's hierarchical click)
Hold the trigger on an object	picks it up: it follows the point the laser lands on in the world and is set down where the trigger is released
Trigger on a gizmo handle	the gizmo's own drag, along the laser
Squeeze the grip with the laser on an object	the object follows the hand in position and rotation until the grip is released
A (pointing hand)	steps the gizmo's tool: move, rotate, scale
B (pointing hand)	undo
B (other hand)	redo

Each move is one undo operation of the gizmo (gizmo.beginFree, gizmo.beginGrab), so undo, redo and live sync behave as they do for a gizmo drag on a desktop. Call xr_edit.tick(dt) once per editor frame, ahead of gizmo.tick.

A bare hand has the pinch for both: a pinch that begins with the laser on an object (and not on a gizmo handle) is the grip, and carries the object with the hand until the pinch opens; a pinch on anything else is the trigger.