fix(globe): tighten the Cesium engine after review

Map sources are applied through one src/maps/sceneApply.js helper shared by MapSourceController and engine.maps (live layer kept for an unchanged provider, providers cached per source). The contract gains flyTo endTransform and rectangle destinations, flyToSphere easing, drillPick width/height and pick content, with Cesium's own flyToSphere range. Input skips listeners removed during dispatch and stays inert after destroy.

scripts/package-boundaries.json

@@ -1611,6 +1611,7 @@
       "src/maps/controller.js",
       "src/maps/imageryComparison.js",
       "src/maps/credits.js",
+      "src/maps/sceneApply.js",
       "src/maps/defaultSources.js",
       "src/maps/google3d.js",
       "src/maps/imagery.js",
@@ -2111,6 +2112,7 @@
       "src/maps/controller.js",
       "src/maps/imageryComparison.js",
       "src/maps/credits.js",
+      "src/maps/sceneApply.js",
       "src/maps/defaultSources.js",
       "src/maps/google3d.js",
       "src/maps/imagery.js",