Update documentation and refactor useAutoSave hook

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/src/hooks/useAutoSave.ts

@@ -74,7 +74,7 @@ export function useAutoSave<T>(
       isSavingRef.current = false;
 
       // If a pending save was queued while we were saving, run it now.
-      if (pendingSaveRef.current as boolean) {
+      if (pendingSaveRef.current) {
         pendingSaveRef.current = false;
         await performSave(latestValueRef.current);
       }