feat: AI Kurzy module, project/service documents, services SQL import

- Add AI Kurzy module with courses, participants, and registrations management
- Add project documents and service documents features
- Add service folders for document organization
- Add SQL import queries for services from firmy.slovensko.ai
- Update todo notifications and group messaging
- Various API improvements and bug fixes

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

src/app.js

@@ -31,6 +31,7 @@ import pushRoutes from './routes/push.routes.js';
 import userRoutes from './routes/user.routes.js';
 import serviceRoutes from './routes/service.routes.js';
 import emailSignatureRoutes from './routes/email-signature.routes.js';
+import aiKurzyRoutes from './routes/ai-kurzy.routes.js';
 
 const app = express();
 
@@ -130,6 +131,7 @@ app.use('/api/push', pushRoutes);
 app.use('/api/users', userRoutes);
 app.use('/api/services', serviceRoutes);
 app.use('/api/email-signature', emailSignatureRoutes);
+app.use('/api/ai-kurzy', aiKurzyRoutes);
 
 // Basic route
 app.get('/', (req, res) => {