Captures the full retail-faithful remote-entity motion port that shipped
today (commit 340dabb). Documents the wire-format discoveries (correct
MovementStateFlag bits, ACE stop signals, absent-HasVelocity semantics),
the architecture (per-remote PhysicsBody + MotionInterpreter), and the
5+ failed approaches we worked through before landing on the right one.
Key pickup for next session: investigate retail observer view of ACdream
player — user reported "not perfect" right before calling it.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
