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/adminEmail.js

@@ -1,7 +1,7 @@
 const express = require('express');
 const nodemailer = require('nodemailer');
 const { body, validationResult } = require('express-validator');
-const { db } = require('../database/db');
+const { db, logActivity } = require('../database/db');
 const { adminAuth } = require('../middleware/auth');
 const router = express.Router();
 
@@ -83,13 +83,11 @@ router.post('/config', [
     }
 
     // Log activity
-    await db('activity_logs').insert({
-      activity_type: 'email_config_updated',
-      actor_type: 'admin',
-      actor_id: req.user.id,
-      actor_name: req.user.username,
-      metadata: JSON.stringify({ smtp_host, from_email })
-    });
+    await logActivity('email_config_updated', 
+      { smtp_host, from_email }, 
+      null, 
+      { type: 'admin', id: req.user.id, name: req.user.username }
+    );
 
     res.json({ message: 'Email configuration updated successfully' });
   } catch (error) {