refactored di into more composable parts

libs/core/di/src/index.ts

@@ -3,7 +3,7 @@ export * from './operation-context';
 export * from './pool-size-calculator';
 export * from './types';
 
-// Awilix container exports
+// Legacy exports for backward compatibility
 export {
   createServiceContainer,
   createServiceContainerFromConfig,
@@ -14,6 +14,24 @@ export {
   type ServiceContainerOptions,
 } from './awilix-container';
 
+// New modular structure exports
+export * from './container/types';
+export { ServiceContainerBuilder } from './container/builder';
+export { 
+  createServiceContainerAsync,
+  createServiceContainer as createServiceContainerNew,
+  createServiceContainerFromConfig as createServiceContainerFromConfigNew
+} from './container/factory';
+
+// Configuration exports
+export * from './config/schemas';
+
+// Factory exports
+export * from './factories';
+
+// Utility exports
+export { ServiceLifecycleManager } from './utils/lifecycle';
+
 // Service application framework
 export {
   ServiceApplication,