build: add Navara for the experimental engine

Pins @navaramap/three and @navaramap/three-default-plugin 0.2.1 with
their peers three 0.185.1 and postprocessing 6.39.4 (mapillary-js keeps
its own nested three 0.134). The dev server leaves the Navara packages
and their wasm workers out of dependency pre-bundling so wasm-bindgen
resolves its .wasm next to the package. Nothing imports Navara yet: the
Cesium-mode main chunk is byte-identical (2,837,992 bytes, same hash).

build/vite.js

@@ -85,6 +85,18 @@ export function createBrowserViteConfig({
         // Loaded on demand when the first street-level image opens.
         'mapillary-js',
       ],
+      // Navara's wasm-bindgen glue loads new URL('x_bg.wasm', import.meta.url)
+      // and its workers by URL; both must resolve next to the package's own
+      // files, not inside .vite/deps. Dev server only: the experimental
+      // Navara engine is a dynamic import outside the Cesium-mode bundle.
+      exclude: [
+        '@navaramap/three',
+        '@navaramap/three-default-plugin',
+        '@navaramap/engine',
+        '@navaramap/engine-api',
+        '@navaramap/engine-worker',
+        '@navaramap/engine-font-worker',
+      ],
     },
     server: {
       host: host || 'localhost',

package.json

@@ -58,13 +58,17 @@
     "@jtarrio/webrtlsdr": "^3.0.6",
     "@mapbox/vector-tile": "^3.0.0",
     "@meri-imperiumi/eccodes-wasm": "^2.48.2",
+    "@navaramap/three": "0.2.1",
+    "@navaramap/three-default-plugin": "0.2.1",
     "cesium": "^1.124.0",
     "egm96-universal": "^1.1.1",
     "hls.js": "^1.7.3",
     "mapillary-js": "^4.1.2",
     "mgrs": "^2.1.0",
     "pbf": "^5.1.2",
-    "satellite.js": "^6.0.2"
+    "postprocessing": "6.39.4",
+    "satellite.js": "^6.0.2",
+    "three": "0.185.1"
   },
   "devDependencies": {
     "prettier": "3.9.6",

src/tooling/viteBuild.test.mjs

@@ -229,3 +229,16 @@ test('the CSP admits the event media embeds and the Maps JavaScript API, and no
   // X posts load in X's own frames.
   assert.ok(frames.includes('https://platform.twitter.com'));
 });
+
+test('the dev server leaves Navara and its wasm workers out of dependency pre-bundling', () => {
+  const { optimizeDeps } = createBrowserViteConfig({});
+  for (const name of [
+    '@navaramap/three',
+    '@navaramap/three-default-plugin',
+    '@navaramap/engine',
+    '@navaramap/engine-api',
+    '@navaramap/engine-worker',
+    '@navaramap/engine-font-worker',
+  ])
+    assert.ok(optimizeDeps.exclude?.includes(name), name);
+});