fix: export app and register meal-plans routes

- Export app from index.ts for testing
- Only start server when run directly (not imported)
- Add meal-plans routes to Express app
- Fixes "Cannot read properties of undefined" supertest error

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

packages/api/src/index.ts

@@ -9,6 +9,7 @@ import cookbooksRoutes from './routes/cookbooks.routes';
 import tagsRoutes from './routes/tags.routes';
 import backupRoutes from './routes/backup.routes';
 import authRoutes from './routes/auth.routes';
+import mealPlansRoutes from './routes/meal-plans.routes';
 import './config/passport'; // Initialize passport strategies
 import { testEmailConfig } from './services/email.service';
 
@@ -37,16 +38,22 @@ app.use('/api/recipes', recipesRoutes);
 app.use('/api/cookbooks', cookbooksRoutes);
 app.use('/api/tags', tagsRoutes);
 app.use('/api/backup', backupRoutes);
+app.use('/api/meal-plans', mealPlansRoutes);
 
 // Health check
 app.get('/health', (req, res) => {
   res.json({ status: 'ok', timestamp: new Date().toISOString() });
 });
 
-// Start server
+// Export app for testing
+export default app;
+
+// Start server only if this file is run directly (not imported)
+if (require.main === module) {
   app.listen(PORT, async () => {
     console.log(`🌿 Basil API server running on http://localhost:${PORT}`);
 
     // Test email configuration on startup
     await testEmailConfig();
   });
+}