Add Chromium-only Blender WebEngine parity work

web/app/vite.config.ts

@@ -0,0 +1,43 @@
+import { defineConfig, type Plugin } from "vite";
+import react from "@vitejs/plugin-react";
+
+const isolationHeaders = {
+  "Cross-Origin-Opener-Policy": "same-origin",
+  "Cross-Origin-Embedder-Policy": "require-corp",
+  "Cross-Origin-Resource-Policy": "same-origin",
+};
+
+function preserveIsolationHeaders(): Plugin {
+  const install = (server: { middlewares: { use: (handler: (request: unknown, response: { setHeader: (name: string, value: string) => void }, next: () => void) => void) => void } }) => {
+    server.middlewares.use((_request, response, next) => {
+      for (const [name, value] of Object.entries(isolationHeaders)) response.setHeader(name, value);
+      next();
+    });
+  };
+  return {
+    name: "preserve-isolation-headers",
+    configureServer: install,
+    configurePreviewServer: install,
+  };
+}
+
+export default defineConfig({
+  root: "app",
+  plugins: [preserveIsolationHeaders(), react()],
+  server: {
+    port: 5173,
+    strictPort: false,
+    headers: {
+      ...isolationHeaders,
+    },
+  },
+  preview: {
+    headers: {
+      ...isolationHeaders,
+    },
+  },
+  build: {
+    outDir: "../dist",
+    emptyOutDir: true,
+  },
+});