 managed 
                // by Juris's reactive system and will update automatically when their 
                // state paths change. This is the key benefit - we only update the 
                // item-specific data, not the reactive deep nested elements.
                
                // Performance items have different structure
                if (element.classList.contains('perf-item')) {
                    updatePerformanceItemGranularly(element, newItem);
                }
            }
      