feat: upgrade AI prompts to v2 specification with grounding and injection shield

src/routes/index.ts

@@ -6,6 +6,7 @@ import caseRoutes from './case.routes';
 import templateRoutes from './template.routes';
 import draftingRoutes from './drafting.routes';
 import googleDriveRoutes from './googleDrive.routes';
+import authRoutes from './auth.routes';
 
 const router = Router();
 
@@ -13,6 +14,7 @@ router.get('/health', (req, res) => {
   res.json({ status: 'ok', message: 'AyrisLegal Backend is running' });
 });
 
+router.use('/auth', authRoutes);      // POST /api/auth/register, /api/auth/check-device
 router.use('/documents', documentRoutes);
 router.use('/chat', chatRoutes);
 router.use('/cases', caseRoutes);