update owliver agent

.vite-preview.config.mjs

@@ -0,0 +1,12 @@
+// Temporary: `vite preview` with the same /api proxy the dev server uses, so
+// the built bundle can be QA'd against the live Go API. Not part of the repo.
+import base from './vite.config.js';
+
+export default {
+  ...base,
+  preview: {
+    port: 5181,
+    host: '0.0.0.0',
+    proxy: base.server.proxy,
+  },
+};