Host
sibling 1 · owns the save
Guest
a copy · never saves
Company state
commands ← · the whole state, zipped, after every change →
Poses
each owns their own body · 20 a second · relayed by the host
Lawn cells and work areas
each cuts their own copy · changes merge, shortest grass wins
One-off events
a flower cut, a knock · the host checks · first hit wins
Cutscenes · state hashes
host only · a chunk that differs is sent again (CO12)
The host checks everything; the guest never waits for it.
The channels between a host and one guest (more guests: the same, once each).