fix(frontend): resolve TS2448 filteredDocs TDZ and import missing DocumentBlock in WorkspaceView

frontend/src/features/workspace/WorkspaceView.tsx

@@ -20,6 +20,7 @@ import {
 } from 'lucide-react';
 import {
   Document,
+  DocumentBlock,
   DocShare,
   SharedFolder,
   TagDetails,
@@ -683,6 +684,17 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
     return Array.from(set).sort();
   }, [docs, folders, sharedFolders]);
 
+  const filteredDocs = useMemo(() => {
+    const q = searchQuery.trim().toLowerCase();
+    if (!q) return docs;
+    return docs.filter(
+      (d) =>
+        d.title.toLowerCase().includes(q) ||
+        (d.content && d.content.toLowerCase().includes(q)) ||
+        (d.tags && d.tags.some((t) => t.toLowerCase().includes(q)))
+    );
+  }, [docs, searchQuery]);
+
   const folderTree = useMemo(() => {
     const rootNodes: FolderTreeNode[] = [];
     const nodeMap = new Map<string, FolderTreeNode>();
@@ -737,17 +749,6 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
     return rootNodes;
   }, [allFolderPaths, filteredDocs, sharedFolders]);
 
-  const filteredDocs = useMemo(() => {
-    const q = searchQuery.trim().toLowerCase();
-    if (!q) return docs;
-    return docs.filter(
-      (d) =>
-        d.title.toLowerCase().includes(q) ||
-        (d.content && d.content.toLowerCase().includes(q)) ||
-        (d.tags && d.tags.some((t) => t.toLowerCase().includes(q)))
-    );
-  }, [docs, searchQuery]);
-
   const pinnedDocs = useMemo(
     () => filteredDocs.filter((d) => d.isPinned),
     [filteredDocs]