refactor backend and persist stock campaign queue

vite.config.ts

@@ -3,8 +3,27 @@ import react from '@vitejs/plugin-react'
 import tailwindcss from '@tailwindcss/vite'
 
 // https://vite.dev/config/
-export default defineConfig({
-  plugins: [react(), tailwindcss()],
+export default defineConfig(({ command }) => ({
+  plugins: [
+    command === 'serve' && {
+      name: 'react-refresh-preamble-fix',
+      transformIndexHtml() {
+        return [{
+          tag: 'script',
+          attrs: { type: 'module' },
+          children: `
+            import RefreshRuntime from "/@react-refresh";
+            RefreshRuntime.injectIntoGlobalHook(window);
+            window.$RefreshReg$ = () => {};
+            window.$RefreshSig$ = () => (type) => type;
+            window.__vite_plugin_react_preamble_installed__ = true;
+          `
+        }]
+      }
+    },
+    react(),
+    tailwindcss()
+  ],
   server: {
     port: 3001,
     proxy: {
@@ -23,4 +42,4 @@ export default defineConfig({
       }
     }
   }
-})
+}))