Fix the follow-up review findings in import, layers, startup and engines

- KML/KMZ import: a per-file canvas budget and cache for ground overlays,
  limits on rings and vertices of raised polygons, overlays across 360° and
  near the poles, degenerate holes, polar and single-latitude fills,
  absolute overlays at their altitude, overlay order by drawOrder as on
  Cesium, and pins on tiles keep their measured height.
- Points on the surface: OSM Places and Street Level cones share the
  surface sampler and sit on the terrain before they are measured, within
  a sampling budget per pass; Cockpit's contact-dot bank keeps the dot
  atlas, and a failed fleet model loads again after a pause.
- Startup: the loading screen lifts after the share-link view is restored,
  the retry screen names the failed engine and takes focus, and the
  fallback toast stays for 6 s.
- Engines: an engine switch lands a running camera flight at its
  destination (camera.completeFlight on both engines), the sighting card
  leaves focus on the engine picker after a switch, and a Cesium model
  error stays with the instance that failed.
- The MCP panel builds again: its wind-mesh alias resolves to the stub.
- QA: the wildlife switch waits for the camera to rest, GBFS --w2 says it
  needs the dev server, and test fixtures are shared instead of copied.

scripts/qa-gbfs-names.test.mjs

@@ -0,0 +1,50 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+
+const source = readFileSync(
+  new URL('./qa-gbfs-names.mjs', import.meta.url),
+  'utf8',
+);
+const openSource = source.slice(
+  source.indexOf('async function open('),
+  source.indexOf('async function nextFrame('),
+);
+
+function fixture({ extended, dev }) {
+  const page = {
+    bringToFront: async () => {},
+    on() {},
+    setViewport: async () => {},
+    evaluateOnNewDocument: async () => {},
+    goto: async () => {},
+    evaluate: async () => dev,
+    waitForFunction: async () => {},
+  };
+  const dependencies = {
+    browser: { newPage: async () => page },
+    extended,
+    watchBrowserPage() {},
+    report: {},
+    appUrl: 'http://localhost:4000',
+    information: {},
+    status: {},
+    fromDegrees: () => ({}),
+  };
+  return new Function(
+    ...Object.keys(dependencies),
+    `${openSource}\nreturn open;`,
+  )(...Object.values(dependencies));
+}
+
+test('preview rejects the optional dev-only raster checks before importing source modules', async () => {
+  await assert.rejects(
+    fixture({ extended: true, dev: false })(),
+    /--w2 requires a Vite dev server/,
+  );
+});
+
+test('normal preview checks and extended dev checks remain available', async () => {
+  await fixture({ extended: false, dev: false })();
+  await fixture({ extended: true, dev: true })();
+});