Leaving a battleground left the character unable to walk for the rest of the session. The
`settle released` line named it: `WASD held by: control-lost`.
vmangos takes control for the teleport (`SetClientControl(player, 0)`), so `Revoked` sets
`control_lost` and parks the mover, and only a later `SMSG_CLIENT_CONTROL_UPDATE` with
`allow_move = true` clears it. Nothing guarantees that packet, and nothing else clears the flag:
the worldport arm replaces the pose and the settle releases, neither asks, and `seizing` at
`wire_in.rs` wants `reseat`, which a worldport never sets. So the lock on the body we just left
parked the body we came back as.
A transfer is a mover change, so re-claim at the transfer's completion, with the ack, the way
login does — the same teardown as the reference's `SetActiveMover` reset. `reseat` rides along so
the existing seize path resets the outgoing mover's state. A possession is left alone: there the
lock is the point.
Compile-verified only — the live run is the test.
chairmanpow
3b068b15c2