fix

frontend/src/desktop/useDocumentDrag.js

@@ -171,6 +171,7 @@ const useDocumentDrag = () => {
 
       const rotation = simulationState.rotation;
       layoutRef.current.set(docId, { ...entry, rotation });
+      markLayoutDirty?.();
 
       const node = itemRefs.current.get(docId);
       if (node) {
@@ -185,7 +186,7 @@ const useDocumentDrag = () => {
       const isSettled = Math.abs(angularVelocity) < SETTLE_ANGULAR_VELOCITY;
       return isSettled;
     },
-    [itemRefs, layoutRef],
+    [itemRefs, layoutRef, markLayoutDirty],
   );
 
   const startInertiaAnimation = useCallback(
@@ -627,6 +628,8 @@ const useDocumentDrag = () => {
           item.displayRotation += (item.targetRotation - item.displayRotation) * rotationBlend;
         }
 
+        markLayoutDirty?.();
+
         const entryItem = layoutRef.current.get(item.docId) || {};
         layoutRef.current.set(item.docId, {
           ...entryItem,
@@ -780,6 +783,8 @@ const useDocumentDrag = () => {
       const pointerInsideCard =
         Math.abs(pointerLocalX) <= halfWidth && Math.abs(pointerLocalY) <= halfHeight;
 
+      markLayoutDirty?.();
+
       const currentTimestamp =
         typeof event.timeStamp === 'number' && Number.isFinite(event.timeStamp)
           ? event.timeStamp
@@ -829,6 +834,7 @@ const useDocumentDrag = () => {
       recalcVisibleDocIds,
       debugDrag,
       onDocumentStackSelect,
+      markLayoutDirty,
     ],
   );