refactor: separate standalone Vite wiring and provider middleware

scripts/package-boundaries.json

@@ -10,16 +10,40 @@
       "src/data/localGeojsonCore.js",
       "src/data/localGeojsonLod.js"
     ],
-    "external": ["cesium"]
+    "external": [
+      "cesium"
+    ]
   },
   "application": {
-    "exports": ["./application"],
-    "modules": ["src/app/application.js"],
+    "exports": [
+      "./application"
+    ],
+    "modules": [
+      "src/app/application.js"
+    ],
     "external": []
   },
   "viewer": {
-    "exports": ["./application/viewer"],
-    "modules": ["src/app/viewer.js"],
-    "external": ["cesium"]
+    "exports": [
+      "./application/viewer"
+    ],
+    "modules": [
+      "src/app/viewer.js"
+    ],
+    "external": [
+      "cesium"
+    ]
+  },
+  "vite-build": {
+    "runtime": "node",
+    "exports": [
+      "./build/vite"
+    ],
+    "modules": [
+      "build/vite.js"
+    ],
+    "external": [
+      "vite-plugin-cesium"
+    ]
   }
 }