test(cockpit): the real vessel layer keeps the ridden ship on a water click

The bridge tests drive a hand-written layer, so nothing exercised the
vessel layer's own scene-click gate. A wire test now clicks open water with
the bridge holding the ship, then again after release.

The Contacts test that adopts Live AIS Vessels directly is renamed to say
so: it never rides a bridge.

src/data/aisLiveVessels.test.mjs

@@ -989,6 +989,22 @@ test('vessel interaction wire: trail pick does not deselect', () => {
   }
 });
 
+test('vessel interaction wire: a click on open water keeps the ship the bridge rides', () => {
+  const harness = installWireHarness({ id: 'gev-trailing-contact' });
+  try {
+    aisLiveVesselsLayer.setCockpitSubject(harness.record.mmsi);
+    harness.handler.click({ position: { x: 10, y: 20 } });
+    assert.equal(aisLiveVesselsLayer.getSelectedInfo()?.mmsi, harness.record.mmsi);
+    assert.equal(harness.trail.clearCalls, 0);
+    // Released, the same click deselects as it always has.
+    aisLiveVesselsLayer.setCockpitSubject(null);
+    harness.handler.click({ position: { x: 10, y: 20 } });
+    assert.equal(aisLiveVesselsLayer.getSelectedInfo(), null);
+  } finally {
+    harness.cleanup();
+  }
+});
+
 test('vessel interaction wire: only the gev-trail: namespace receives the trail no-op', () => {
   const harness = installWireHarness({ id: 'gev-trailing-contact' });
   try {

src/ui/cockpitEntryGate.test.mjs

@@ -462,7 +462,7 @@ test('a ride handed to an aircraft on a layer Contacts turned on keeps that laye
   assert.deepEqual(on(manager), ['flights', 'military']);
 });
 
-test('a bridge ride keeps Live AIS Vessels when Contacts had turned it on', async (t) => {
+test('Live AIS Vessels, once adopted as the ridden layer, outlives Contacts', async (t) => {
   const live = await liveFixture(t, {
     tracked: { layerId: 'flights', info: CIVIL },
   });