- Replace the instant "delivered" completion with a two-phase flow:
phase `delivering` (convoy breaks off, glides beside the destination
world, fades out) followed by the seal/payout on fade close.
- The delivery now requires the destination world to be visible in the
camera's world rect (`_escortObjectOnScreen`) rather than merely within
a distance radius.
- Add `_runEscortDelivery` (time-driven ease-out approach + alpha/scale
fade, frame-rate independent) and `_sealEscortDelivery` (tear down
convoy, close phase, complete quest, toast).
- Extend `normalizeEscort` to accept the new `delivering` phase.
- `_escortDestinationObject` now returns the world's rendered radius so
the landing slot can anchor just off the planet/station disc.
- Add `escortArrivingToast` UI string for the "convoy inbound" moment.
- Update escort-flow test to assert the delivering → delivered sequence
and add a standalone repro script (`dev/escort-delivery-repro.mjs`).
Brian Fertig
5810560b18