Simplify clean target

Makefile

@@ -13,9 +13,7 @@ help:
 # Clean build artifacts
 clean:
 	@echo "Cleaning build artifacts..."
-	rm -rf build/
-	rm -rf dist/
-	rm -rf src/kumacli.egg-info/
+	rm -rf build/ dist/ src/kumacli.egg-info/
 	find . -name "*.pyc" -o -name "*.pyo" -delete
 	find . -name "__pycache__" -type d -exec rm -rf {} + 2>/dev/null || true
 	@echo "Clean complete."