diff --git a/frontend/index.html b/frontend/index.html
index 9eb10c84..da24e620 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, user-scalable=0" />
     <title>GoChat</title>
     <link rel="icon" type="image/png" href="/favicon-32x32.png" />
-    <script src="/runtime-config.js"></script>
+    <script vite-ignore src="/runtime-config.js"></script>
   </head>
   <body class="text-slate-600">
     <div id="app"></div>
diff --git a/frontend/scripts/check-build.mjs b/frontend/scripts/check-build.mjs
index e3be6362..81cc72df 100644
--- a/frontend/scripts/check-build.mjs
+++ b/frontend/scripts/check-build.mjs
@@ -12,7 +12,11 @@ const assets = [...html.matchAll(/(?:href|src)="(\/assets\/[^"]+)"/g)].map(
 );
 
 assert.match(html, /<div id="app"><\/div>/);
-assert.match(html, /<script src="\/runtime-config\.js"><\/script>/);
+assert.match(html, /<script\s+src="\/runtime-config\.js"><\/script>/);
+assert.ok(
+  html.indexOf('/runtime-config.js') < html.indexOf('type="module"'),
+  'runtime config must load before the app module'
+);
 assert.ok(
   assets.some(asset => asset.endsWith('.js')),
   'missing JS asset'
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index dee9dbae..3ece02ce 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -151,6 +151,8 @@ export default defineConfig({
   },
   build: {
     outDir: 'dist',
+    // Dashboard is a 3 MB entry; warn only when it grows beyond that budget.
+    chunkSizeWarningLimit: 3000,
     rollupOptions: {
       input: isLibraryMode ? undefined : entrypoints,
       output: {