Aborts the delegated work in flight; returns how many runs were aborted.
The call's controls — resolved lazily because the bridge does not exist until the bridge engine has started.
Ends the call (stops the bridge session).
The features the carrier supports (a tool for an unsupported one is refused even if the model invents the call).
Tells the model something happened out-of-band (a failed transfer) so it can tell the caller.
The outbound policy a transfer destination is checked against.
OptionalSettleOverride for the goodbye settle delay (tests).
The transfer directory — the only destinations transfer_call can reach.
What the executor needs.