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

tsconfig.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx",
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["./client/src/*"]
+    }
+  },
+  "include": ["client/src"],
+  "references": [{ "path": "./tsconfig.node.json" }]
+}