Live sent the milliseconds since the object was created on the server in
every construction header (nonzero in 142,258 of 145,677 captured
constructions; the same object constructed again later carries a larger
value by the time elapsed; the local player's own construction on load is
0). DLU always wrote 0. The client stores it in the object's config
(LWOGameObject::time_since_created_on_server).
Entities now remember when they were created (steady clock) and write
their age.
Test: ReplicaConstructionTest.TimeSinceCreatedOnServerIsTheObjectsAge.
Check in game: zone in and walk around several worlds; objects, NPCs,
enemies and other players appear and animate as before (no objects
popping, stuck or misplaced animations on platforms/spinners).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
