- Add JumpTravel.js with pure arrival geometry (return-gate lookup, spawn point past keepout) and wire it into GameScene.jumpThroughGate to re-stage the run via the save pipeline and scene restart
- Add gate hit-test (gateAt) so active gates trigger the jump on click while dormant ones show a console nudge and fall through to fly-here
- Add jump config block to gates.json (feature switch, arrival gap, delay, toast templates) and update landing.json gasgiant shop clips
- Add dev/jump-travel.test.mjs covering config, geometry, real-galaxy coverage, and determinism; refresh PROJECT_NOTES for the new mechanic
