fix: resolve CI/CD issues - Poetry setup, type annotations, MyPy errors

codechunk/utils/file_utils.py

@@ -1,3 +1,4 @@
+import os
 from pathlib import Path
 from typing import Optional
 import hashlib
@@ -47,7 +48,7 @@ def find_files_pattern(directory: Path, patterns: list) -> list:
     from fnmatch import fnmatch
     matches = []
 
-    for root, dirs, files in directory.walk():
+    for root, dirs, files in os.walk(directory):
         for file in files:
             file_path = Path(root) / file
             rel_path = str(file_path.relative_to(directory))