fix: resolve CI linting failures (F401 unused imports)

tests/test_templates.py

@@ -2,12 +2,10 @@
 
 import tempfile
 from pathlib import Path
-from unittest.mock import MagicMock, patch
 
 import pytest
 
 from project_scaffold_cli.template_engine import TemplateEngine
-from project_scaffold_cli.config import Config
 
 
 class TestTemplateEngine: