- Split trestle-arrive into an arrive-1/2 ack pair, both voiced (new q2-04/q2-05 clips)
- Quest now completes on reaching the neutral capital planet instead of entering the neighboring system; add _atCapitalWorld proximity check and arm arrival in _checkDestinationReached
- Gate capital-world landing until the quest reward is claimed, with a new capitalDenyToast denial
- Update tests, save-data comments, and fix lava-shop-02 asset reference
