feat: enhance JSON serialization safety & add dxt upload limit (#230)

src/services/services.ts

@@ -0,0 +1,10 @@
+import { registerService, getService } from './registry.js';
+import { DataService, DataServiceImpl } from './dataService.js';
+
+registerService('dataService', {
+  defaultImpl: DataServiceImpl,
+});
+
+export function getDataService(): DataService {
+  return getService<DataService>('dataService');
+}