Moving platform

Choose the carry/transfer policy:

Column	Grounded carry	Departure transfer
stick-carry	full platform pose delta	published world/relative velocity rule
loose-carry	partial authored carry	published transfer factor
one-shot-lift	constrained rider policy	authored exit rule
crush-safe	any carry policy	explicit stop/yield/damage response

Reference frames and order

Sample platform previous/current logical transforms and derive platform point velocity/delta for the rider contact point.
Grounded rider movement is solved in a declared platform-relative or world-space convention exactly once. Do not both carry by transform delta and add the same platform velocity again.
On jump/detach, convert the rider's relative motion to world motion using the published transfer policy. Whether platform velocity is inherited fully, partially or not at all is data, not a universal exception for one lift type.
jump-leniency owns coyote after support is lost. platform-jump owns jump arc. locomotion owns rider movement integration.
Moving collision geometry, navigation/leashes and camera-anti-clip must observe a compatible platform pose for the same logical frame.
Crush behavior is explicit: stop/yield, authored damage/kill with telegraph, or another declared response. Silent interpenetration is invalid.