feat: Add BlockComponent to render interactive simulation dashboard blocks with element management and resizing.

app/src/components/SimulationDashboard/components/block/BlockComponent.tsx

@@ -78,6 +78,11 @@ const BlockComponent: React.FC<BlockComponentProps> = ({
                 zIndex: block.zIndex || 1,
                 cursor: isDraggable ? "move" : "pointer",
             }}
+            onMouseDown={(e) => {
+                if (isDraggable) {
+                    handleBlockDragStart(block.blockUuid, e);
+                }
+            }}
             onClick={handleMouseDown}
         >
             {/* Add Element Button */}