Modernized build tooling

features/environment.py

@@ -0,0 +1,21 @@
+"""Behave test environment setup."""
+
+import sys
+from pathlib import Path
+
+
+def before_all(context):
+    """Set up test environment."""
+    project_root = Path(__file__).parent.parent
+    src_path = project_root / "src"
+
+    if str(src_path) not in sys.path:
+        sys.path.insert(0, str(src_path))
+
+    context.project_root = project_root
+
+
+def before_scenario(context, _scenario):
+    """Reset context before each scenario."""
+    context.runner = None
+    context.result = None