Fix multiple production issues and add password change functionality

- Fixed frontend API URL configuration to use correct port 3002
- Fixed create event functionality by adding proper endpoint and fixing JSON parsing
- Fixed email settings save functionality by importing logActivity correctly
- Fixed admin settings save functionality by using api client instead of direct fetch
- Implemented password change functionality with modal and backend endpoint
- Added updated_at column to admin_users table
- Fixed all mock data issues - now using real backend data throughout

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

Co-Authored-By: Claude <noreply@anthropic.com>

backend/src/routes/adminAuth.js

@@ -0,0 +1,56 @@
+const express = require('express');
+const bcrypt = require('bcrypt');
+const { body, validationResult } = require('express-validator');
+const { db } = require('../database/db');
+const { adminAuth } = require('../middleware/auth');
+const router = express.Router();
+
+// Change password
+router.post('/change-password', [
+  adminAuth,
+  body('currentPassword').notEmpty().withMessage('Current password is required'),
+  body('newPassword').isLength({ min: 6 }).withMessage('New password must be at least 6 characters')
+], async (req, res) => {
+  try {
+    const errors = validationResult(req);
+    if (!errors.isEmpty()) {
+      return res.status(400).json({ errors: errors.array() });
+    }
+
+    const { currentPassword, newPassword } = req.body;
+    const userId = req.user.id;
+
+    // Get user from database
+    const user = await db('admin_users')
+      .where('id', userId)
+      .first();
+
+    if (!user) {
+      return res.status(404).json({ error: 'User not found' });
+    }
+
+    // Verify current password
+    const validPassword = await bcrypt.compare(currentPassword, user.password_hash);
+    if (!validPassword) {
+      return res.status(400).json({ error: 'Current password is incorrect' });
+    }
+
+    // Hash new password
+    const newPasswordHash = await bcrypt.hash(newPassword, 10);
+
+    // Update password
+    await db('admin_users')
+      .where('id', userId)
+      .update({
+        password_hash: newPasswordHash,
+        updated_at: new Date()
+      });
+
+    res.json({ message: 'Password changed successfully' });
+  } catch (error) {
+    console.error('Password change error:', error);
+    res.status(500).json({ error: 'Failed to change password' });
+  }
+});
+
+module.exports = router;