Remove asset/document hydration pipeline and introduce client-side cache updates for correspondents, tags, and search results

frontend/src/documents/panel/DocumentsPanel.tsx

@@ -518,11 +518,33 @@ const DocumentsPanelInner: React.FC<DocumentsPanelInnerProps> = ({
   );
 
   const gridIconSize = DEFAULT_GRID_ICON_SIZE;
-  useEffect(() => {
+
+  const scrollToTop = useCallback(() => {
     if (scrollRef.current) {
       scrollRef.current.scrollTop = 0;
     }
-  }, [viewMode]);
+  }, []);
+
+  const searchKey = useMemo(
+    () => (Array.isArray(searchResultIds) ? searchResultIds.join(':') : 'none'),
+    [searchResultIds],
+  );
+
+  const breadcrumbKey = useMemo(
+    () => (Array.isArray(breadcrumbs) ? breadcrumbs.map((crumb) => crumb?.id ?? '').join(':') : 'none'),
+    [breadcrumbs],
+  );
+
+  useEffect(() => {
+    scrollToTop();
+  }, [
+    scrollToTop,
+    viewMode,
+    showingSearchResults,
+    searchKey,
+    breadcrumbKey,
+  ]);
+
   const isTagDragEvent = useCallback((event) => isTagTransferEvent(event), []);
   const ensureFocusedRowVisible = useCallback(() => {
     if (!focusedRowKey) return;