Add DB verification script

scripts/verify_db.js

@@ -0,0 +1,47 @@
+const db = require('../lib/db');
+const crypto = require('crypto');
+
+async function testInsert() {
+  const id = crypto.randomUUID();
+  console.log('Testing DB Insert with ID:', id);
+  try {
+    const query = `
+      INSERT INTO test_results (id, url, user_uuid, user_ip, is_mobile, scores, metrics, filmstrip, timestamp)
+      VALUES ($1, $2, $3, $4, $5, $6, $7, $8, NOW())
+    `;
+    const values = [
+      id, 
+      'http://verify.local', 
+      'user_verify', 
+      '127.0.0.1', 
+      false, 
+      JSON.stringify({performance: 100}), 
+      JSON.stringify({lcp: 500}), 
+      JSON.stringify([{timing: 0, data: 'data:image/jpeg...'}])
+    ];
+
+    await db.pool.query(query, values);
+    console.log('✅ Insert successful!');
+    
+    // Check if we can read it back
+    const res = await db.pool.query('SELECT * FROM test_results WHERE id = $1', [id]);
+    if(res.rows.length > 0) {
+        console.log('✅ Read successful:', res.rows[0].url);
+        console.log('   Data:', JSON.stringify(res.rows[0].scores));
+    } else {
+        console.error('❌ Read failed!');
+    }
+    
+    // Cleanup (optional, keeping it validates "filled" db, but user said "do insertions you need")
+    // Let's keep one row to show "it works"? No, cleaner to clean up or let user run real test.
+    // I will delete it to avoid junk.
+    await db.pool.query('DELETE FROM test_results WHERE id = $1', [id]);
+    console.log('✅ Cleanup successful!');
+    process.exit(0);
+  } catch (err) {
+    console.error('❌ DB Error:', err);
+    process.exit(1);
+  }
+}
+
+testInsert();