fixes

frontend/src/index.jsx

@@ -1708,7 +1708,7 @@ const AppLayout = () => {
   );
 
   const loadFolder = useCallback(
-    async (folderId, { showLoading = true } = {}) => {
+    async (folderId, { showLoading = true, preserveSearch = false } = {}) => {
       const targetId = folderId || 'root';
       setSelectedFolder(targetId);
       if (showLoading) setLoading(true);
@@ -1722,7 +1722,9 @@ const AppLayout = () => {
           }
         }
         applySelectedFolder(targetId, contents);
+        if (!preserveSearch) {
           setSearchResults(null);
+        }
       } catch (error) {
         notifyApiError(error, 'Failed to load folder contents.');
       } finally {
@@ -1759,14 +1761,14 @@ const AppLayout = () => {
       const targetId = folderId && folderId !== 'root' ? folderId : 'root';
 
       if (!navigate || immediate) {
-        await loadFolder(targetId);
+        await loadFolder(targetId, { preserveSearch: isFilterActive });
         return;
       }
 
       const path = targetId === 'root' ? '/documents' : `/documents/folder/${targetId}`;
       navigate(path, { replace });
     },
-    [loadFolder, navigate],
+    [loadFolder, navigate, isFilterActive],
   );
 
   const initializeAfterLogin = useCallback(async () => {
@@ -1799,7 +1801,10 @@ const AppLayout = () => {
 
     const hasData = folderContents.has(targetParam);
     if (targetParam !== selectedFolder || !hasData) {
-      loadFolder(targetParam, { showLoading: !routeDocumentId });
+      loadFolder(targetParam, {
+        showLoading: !routeDocumentId,
+        preserveSearch: isFilterActive,
+      });
     }
   }, [
     token,
@@ -1809,6 +1814,7 @@ const AppLayout = () => {
     selectedFolder,
     loadFolder,
     folderContents,
+    isFilterActive,
   ]);
 
   const refreshCurrentFolder = useCallback(async () => {
@@ -3173,14 +3179,14 @@ const AppLayout = () => {
       const targetId = folderId || selectedFolder || 'root';
 
       if (!navigate) {
-        loadFolder(targetId, { showLoading: false });
+        loadFolder(targetId, { showLoading: false, preserveSearch: isFilterActive });
         return;
       }
 
       const path = targetId === 'root' ? '/documents' : `/documents/folder/${targetId}`;
       navigate(path, { replace: false });
     },
-    [navigate, selectedFolder, loadFolder],
+    [navigate, selectedFolder, loadFolder, isFilterActive],
   );
 
   useEffect(() => {
@@ -3218,7 +3224,7 @@ const AppLayout = () => {
 
         const targetFolder = doc?.folder_id || routeFolderId || 'root';
         if (targetFolder && targetFolder !== selectedFolder) {
-          await loadFolder(targetFolder, { showLoading: false });
+          await loadFolder(targetFolder, { showLoading: false, preserveSearch: isFilterActive });
         }
         if (!cancelled) {
           await openDocumentPreview(routeDocumentId, { replace: true, skipNavigate: true });
@@ -3248,6 +3254,7 @@ const AppLayout = () => {
     documents,
     searchResults,
     notifyApiError,
+    isFilterActive,
   ]);
 
   const handleDocumentTitleUpdate = useCallback(