Parse the complete PhysicsDesc plus F754/F755 packets, correct every PhysicsState bit, and gate all nine retail update channels with generation-safe immutable snapshots. Preserve ForcePosition, teleport, placement, velocity, parent, pickup, delete, and same-generation CreateObject ordering from the named client.
Separate accepted logical lifecycle notifications from retained UI qualities, make GUID replacement and session reset clear every projection exactly once, and add packet, wraparound, malformed-input, parent FIFO, canonical-position, reconnect, and GUID-reuse conformance coverage.
Co-Authored-By: Codex <noreply@openai.com>
ACE sends GameMessagePickupEvent (opcode 0xF74A) instead of
GameMessageDeleteObject (0xF747) for items removed via player pickup
(Player_Tracking.RemoveTrackedObject with fromPickup=true).
Without this handler, BuildPickUp succeeded server-side (item moved
into the player's container, retail observers saw it disappear), but
our local client kept rendering it on the ground because the despawn
message went to the unhandled-opcode bucket.
PickupEvent's wire body adds an objectPositionSequence field on top
of DeleteObject's layout, so the parser is its own type. The
downstream view-removal semantics are identical to DeleteObject, so
the dispatcher routes both opcodes into the same EntityDeleted event
via a small adapter.
