Migrate from Poetry and pyenv to uv

tests/test_utils.py

@@ -1,5 +1,7 @@
-import pytest
 from pathlib import Path
+
+import pytest
+
 from src.core.utils import list_files
 
 
@@ -171,7 +173,7 @@ class TestUtils:
         files = list_files(temp_dir)
 
         # Najdeme soubor v subdir2
-        file5 = [f for f in files if f.name == "file5.txt"][0]
+        file5 = next(f for f in files if f.name == "file5.txt")
 
         # Cesta by měla obsahovat obě složky
         assert "subdir1" in str(file5)