Build premium data portal with React + Tailwind CSS

Frontend Features:
- Landing page with glassmorphism, animated counters, hero section
- Interactive data tables with search, sort, filter, CSV export
- Premium dark theme (navy + gold accents)
- Framer Motion animations and micro-interactions
- Responsive design with Inter + Playfair Display typography
- DataTable component with pagination and live search

Backend Updates:
- New API endpoints: /api/rates/per-diem, /api/rates/accommodations, /api/stats
- Database service methods for bulk data retrieval
- Production mode serves built React app from /dist/client
- Fallback to legacy HTML for development

Tech Stack:
- React 18 + TypeScript
- Vite 7 build tool
- Tailwind CSS 4 with @tailwindcss/postcss
- Framer Motion for animations
- Lucide React icons
- SQLite3 backend

Build Output:
- 351KB optimized JavaScript bundle
- 29KB CSS bundle
- Fully tree-shaken and minified

vite.config.ts

@@ -0,0 +1,26 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+import path from "path";
+
+export default defineConfig({
+  plugins: [react()],
+  root: "./client",
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./client/src"),
+    },
+  },
+  server: {
+    port: 3000,
+    proxy: {
+      "/api": {
+        target: "http://localhost:5001",
+        changeOrigin: true,
+      },
+    },
+  },
+  build: {
+    outDir: "../dist/client",
+    emptyOutDir: true,
+  },
+});