open as worspace implementation

src/workspace/useWorkspaceState.ts

@@ -23,6 +23,10 @@ export function createWorkspaceId(): string {
   return createId("workspace");
 }
 
+export function createPdfId(): string {
+  return createId('pdf');
+}
+
 export function defaultWorkspaceNameFromPdfName(pdfName: string): string {
   return pdfName.replace(/\.pdf$/i, "") || "Untitled workspace";
 }