Fix: Include data directory in build output

Added Vite plugin to copy data directory to dist folder during build.
This ensures scraped data files are available on the deployed site.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: quicklywilliam

vite.config.js

@@ -1,8 +1,44 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import { copyFileSync, mkdirSync, readdirSync, statSync } from 'fs';
+import { join } from 'path';
+
+// Plugin to copy data directory to dist
+function copyDataPlugin() {
+  return {
+    name: 'copy-data',
+    closeBundle() {
+      const dataDir = 'data';
+      const distDataDir = 'dist/data';
+
+      function copyDir(src, dest) {
+        mkdirSync(dest, { recursive: true });
+        const entries = readdirSync(src);
+
+        for (const entry of entries) {
+          const srcPath = join(src, entry);
+          const destPath = join(dest, entry);
+
+          if (statSync(srcPath).isDirectory()) {
+            copyDir(srcPath, destPath);
+          } else {
+            copyFileSync(srcPath, destPath);
+          }
+        }
+      }
+
+      try {
+        copyDir(dataDir, distDataDir);
+        console.log('✓ Copied data directory to dist');
+      } catch (err) {
+        console.warn('⚠ Could not copy data directory:', err.message);
+      }
+    }
+  };
+}
 
 export default defineConfig({
-  plugins: [react()],
+  plugins: [react(), copyDataPlugin()],
   base: '/usedevpricetracker/',
   build: {
     outDir: 'dist',