fix: document renaming

- Remove obsolete `updateDocument` calls in AlwaysVisibleArtifact & SidebarDocuments
- Simplify caching in useDocumentUtils by removing manual __DOCUMENT_CACHE updates and using SWR mutate
- Fix SidebarDocuments’ React.memo guard so title changes always re-render
- Centralize rename logic via a single `document-renamed` event
- Enhance text-streaming prompts for improved Markdown support

Author: will-lp1

apps/snow-leopard/artifacts/text/server.ts

@@ -6,12 +6,11 @@ import { updateDocumentPrompt } from '@/lib/ai/prompts';
 export const textDocumentHandler = createDocumentHandler<'text'>({
   kind: 'text',
   onCreateDocument: async ({ title, dataStream }) => {
-    // No need to track draft content - we're just streaming to the client
-    // Editor's auto-save will handle saving later
 
     const { fullStream } = streamText({
-      model: myProvider.languageModel('artifact-model'),
-      system: `'Write about the given topic. Markdown is supported. Use headings wherever appropriate.',  
+      model: myProvider.languageModel('chat-model-large'),
+      system: `'Write about the given topic. Markdown is supported. Use headings wherever appropriate. Valid Markdown only, using headings (#, ##),
+lists, bold, italics, and code blocks as needed',  
       `.trim(),
       experimental_transform: smoothStream({ chunking: 'line' }),
       prompt: title,

apps/snow-leopard/components/always-visible-artifact.tsx

@@ -68,7 +68,7 @@ export function AlwaysVisibleArtifact({
 }: AlwaysVisibleArtifactProps) {
   const router = useRouter();
   const { artifact, setArtifact, metadata, setMetadata } = useArtifact();
-  const { documentId: contextDocumentId, updateDocument } = useDocumentContext();
+  const { documentId: contextDocumentId } = useDocumentContext();
   const {
     isCreatingDocument,
     renameDocument,
@@ -119,7 +119,6 @@ export function AlwaysVisibleArtifact({
                 status: 'idle'
             };
             setArtifact(artifactData as any);
-            updateDocument(artifactData.documentId, artifactData.title, artifactData.content, artifactData.kind);
             setNewTitle(artifactData.title);
         } else if (initialDocumentId === 'init' || showCreateDocumentForId) {
             const initData: SettableArtifact = {
@@ -131,12 +130,11 @@ export function AlwaysVisibleArtifact({
                 status: 'idle'
             };
             setArtifact(initData as any);
-            updateDocument(initData.documentId, initData.title, initData.content, initData.kind);
             setNewTitle(initData.title);
         }
     });
 
-  }, [initialDocumentId, initialDocuments, setArtifact, updateDocument, showCreateDocumentForId, startTransition, artifact.documentId]);
+  }, [initialDocumentId, initialDocuments, setArtifact, startTransition, artifact.documentId]);
 
   useEffect(() => {
     const handleDocumentRenamed = (event: CustomEvent) => {
@@ -176,15 +174,17 @@ export function AlwaysVisibleArtifact({
     const trimmedNewTitle = newTitle.trim();
     if (trimmedNewTitle && trimmedNewTitle !== latestDocument.title) {
       const originalTitle = latestDocument.title;
-      setArtifact(current => ({ ...current, title: trimmedNewTitle }));
-      setDocuments(prevDocs => prevDocs.map(doc => doc.id === latestDocument.id ? { ...doc, title: trimmedNewTitle } : doc));
+      const originalDocuments = [...documents];
+      
+      setDocuments(prevDocs => prevDocs.map(doc => 
+        doc.id === latestDocument.id ? { ...doc, title: trimmedNewTitle } : doc
+      ));
 
       try {
         await renameDocument(trimmedNewTitle);
       } catch (error) {
         toast.error("Failed to rename document.");
-        setArtifact(current => ({ ...current, title: originalTitle }));
-        setDocuments(prevDocs => prevDocs.map(doc => doc.id === latestDocument.id ? { ...doc, title: originalTitle } : doc));
+        setDocuments(originalDocuments);
         console.error("Rename failed:", error);
       } finally {
         setEditingTitle(false);
@@ -193,7 +193,7 @@ export function AlwaysVisibleArtifact({
        setEditingTitle(false);
        if (!trimmedNewTitle) setNewTitle(latestDocument.title);
     }
-  }, [newTitle, latestDocument, renameDocument, setArtifact]);
+  }, [newTitle, latestDocument, documents, renameDocument, setArtifact]);
 
   const handleCancelEditTitle = useCallback(() => {
     if (!latestDocument) return;

apps/snow-leopard/components/sidebar/sidebar-documents.tsx

@@ -162,9 +162,11 @@ const PureDocumentItem = ({
 };
 
 export const DocumentItem = memo(PureDocumentItem, (prevProps, nextProps) => {
+  if (prevProps.document.title !== nextProps.document.title) return false;
   if (prevProps.isActive !== nextProps.isActive) return false;
   if (prevProps.isSelectionMode !== nextProps.isSelectionMode) return false;
   if (prevProps.isSelected !== nextProps.isSelected) return false;
+  if (prevProps.document.id !== nextProps.document.id) return false;
   return true;
 });
 
@@ -179,7 +181,7 @@ export function SidebarDocuments({ user }: { user: User | undefined }) {
     deleteDocument,
     isCreatingDocument
   } = useDocumentUtils();
-  const { updateDocument } = useDocumentContext();
+  // const { updateDocument } = useDocumentContext();
 
   const [searchTerm, setSearchTerm] = useState('');
   const [isExpanded, setIsExpanded] = useState(true);
@@ -248,18 +250,6 @@ export function SidebarDocuments({ user }: { user: User | undefined }) {
             return doc;
           });
         }, false);
-
-        try {
-          const updateEvent = new CustomEvent('document-updated', {
-            detail: {
-              documentId: event.detail.documentId,
-              title: event.detail.newTitle
-            }
-          });
-          window.dispatchEvent(updateEvent);
-        } catch (error) {
-          console.error('[SidebarDocuments] Error dispatching document-updated event', error);
-        }
       }
     };
 

apps/snow-leopard/hooks/use-document-utils.ts

@@ -179,16 +179,6 @@ export function useDocumentUtils() {
         }));
       }
 
-      if (typeof window !== 'undefined' && (window as any).__DOCUMENT_CACHE) {
-        const cachedDoc = (window as any).__DOCUMENT_CACHE.get(artifact.documentId);
-        if (cachedDoc) {
-          (window as any).__DOCUMENT_CACHE.set(artifact.documentId, {
-            ...cachedDoc,
-            title: updatedDocumentData?.title || newTitle
-          });
-        }
-      }
-
       toast.success('Document renamed', {
         duration: 2000
       });
@@ -250,18 +240,6 @@ export function useDocumentUtils() {
         router.push(`/documents/${documentId}`);
       }
 
-      if (typeof window !== 'undefined') {
-        if (!(window as any).__DOCUMENT_CACHE) {
-          (window as any).__DOCUMENT_CACHE = new Map();
-        }
-        (window as any).__DOCUMENT_CACHE.set(documentId, {
-          id: documentId,
-          title: params.title,
-          content: params.content,
-          kind: params.kind,
-        });
-      }
-      
       return document;
     } catch (error) {
       console.error('[useDocumentUtils] Error creating document:', error);
@@ -345,10 +323,6 @@ export function useDocumentUtils() {
         router.refresh();
       }
 
-      if (typeof window !== 'undefined' && (window as any).__DOCUMENT_CACHE) {
-        (window as any).__DOCUMENT_CACHE.delete(documentId);
-      }
-      
       toast.success('Document deleted');
       return true;
     } catch (error) {