simplify caching

web/utils.py

@@ -203,7 +203,6 @@ def get_cache_path(url: str) -> str:
 def cache_page(url: str, content: str):
     """Cache the page content with a timestamp."""
     cache_path = get_cache_path(url)
-    os.makedirs(os.path.dirname(cache_path), exist_ok=True)
     with open(cache_path, "w", encoding="utf-8") as f:
         f.write(content)
     # Update the file's modification time to the current time