fix

frontend/src/desktop/DesktopWorkspace.jsx

@@ -140,6 +140,23 @@ const DesktopWorkspace = ({
 
   const allowLayoutPersistence = Boolean(tenantId && viewId && viewId.startsWith('folder:'));
 
+  const itemsTraceRef = useRef(items);
+  useEffect(() => {
+    if (itemsTraceRef.current !== items) {
+      const prev = itemsTraceRef.current || [];
+      const next = items || [];
+      const stack = new Error('[trace] items updated').stack?.split('\n').slice(1, 8);
+      console.log('[desk][trace] items value changed', {
+        prevCount: prev.length,
+        nextCount: next.length,
+        sameRef: prev === next,
+        fromSearch: Boolean(searchResults),
+      });
+      console.log('[desk][trace] items stack', stack);
+      itemsTraceRef.current = items;
+    }
+  }, [items, searchResults]);
+
   const containerRef = useRef(null);
   const itemRefs = useRef(new Map());
   const dragTransformsRef = useRef(new Map());
@@ -149,7 +166,6 @@ const DesktopWorkspace = ({
   const [previewSnapshots, setPreviewSnapshots] = useState(() => new Map());
   const [docSizeVersion, setDocSizeVersion] = useState(0);
   const docSizeMapRef = useRef(new Map());
-  const documentLookupRef = useRef(new Map());
   const ensureDocumentSize = useCallback((doc) => {
     if (!doc?.id) {
       return null;
@@ -168,10 +184,6 @@ const DesktopWorkspace = ({
     return map;
   }, [items]);
 
-  useEffect(() => {
-    documentLookupRef.current = documentLookup;
-  }, [documentLookup]);
-
   const engineRef = useRef(null);
   if (!engineRef.current) {
     engineRef.current = new WorkspaceEngine({
@@ -187,12 +199,20 @@ const DesktopWorkspace = ({
   }, [engine, allowLayoutPersistence, tenantId, viewId]);
 
   useEffect(() => {
-    engine.setItems(items);
-  }, [engine, items]);
+    const nextItems = searchResults ? searchResults : documents;
+    engine.setItems(nextItems || []);
+  }, [engine, documents, searchResults]);
 
   useEffect(() => {
-    engine.setDocumentLookup(documentLookup);
-  }, [engine, documentLookup]);
+    const map = new Map();
+    items.forEach((doc) => {
+      const key = doc?.id != null ? String(doc.id) : null;
+      if (key) {
+        map.set(key, doc);
+      }
+    });
+    engine.setDocumentLookup(map);
+  }, [engine, items]);
 
   useEffect(() => {
     engine.setEnsureDocumentSize(ensureDocumentSize);