feat: Add logging utility for calendar sync operations and enhance error handling

steps/vmh/webhook/aiknowledge_update_api_step.py

@@ -39,7 +39,7 @@ async def handler(request: ApiRequest, ctx: FlowContext[Any]) -> ApiResponse:
         if not knowledge_id:
             ctx.logger.error("❌ Missing entity_id in payload")
             return ApiResponse(
-                status_code=400,
+                status=400,
                 body={'success': False, 'error': 'Missing entity_id'}
             )
         
@@ -61,13 +61,13 @@ async def handler(request: ApiRequest, ctx: FlowContext[Any]) -> ApiResponse:
         ctx.logger.info("=" * 80)
         
         return ApiResponse(
-            status_code=200,
+            status=200,
             body={'success': True, 'knowledge_id': knowledge_id}
         )
         
     except Exception as e:
         ctx.logger.error(f"❌ Webhook error: {e}")
         return ApiResponse(
-            status_code=500,
+            status=500,
             body={'success': False, 'error': str(e)}
         )