docs: update documentation files and fix linting issues

tests/quality/test_api_phase_space.py

@@ -21,19 +21,24 @@ class TestPhaseSpaceAPI:
         result = ps(np.array([3.0]))
         assert isinstance(result, np.ndarray)
 
+
 class TestPhaseSpaceProperties:
     """Shared property tests for PhaseSpace."""
 
     @pytest.mark.property
-    @pytest.mark.parametrize("W", [
-        [1.5],
-        [1.1, 2.0, 3.0],
-        np.linspace(1.01, 4.9, 20),
-    ])
+    @pytest.mark.parametrize(
+        "W",
+        [
+            [1.5],
+            [1.1, 2.0, 3.0],
+            np.linspace(1.01, 4.9, 20),
+        ],
+    )
     def test_non_negative(self, W):
         """Phase space must be non-negative (zero at boundaries)."""
         ps = PhaseSpace(W0=5.0)
         from tests.common.test_property_tests import _test_non_negative_values
+
         _test_non_negative_values(ps, W, component_name="PhaseSpace")
 
     @pytest.mark.quality
@@ -43,15 +48,20 @@ class TestPhaseSpaceProperties:
         ps = PhaseSpace(W0=5.0)
         W = np.linspace(1.1, 4.9, n)
         from tests.common.test_property_tests import _test_output_shape_preserved
+
         _test_output_shape_preserved(ps, W, component_name="PhaseSpace")
 
     @pytest.mark.quality
-    @pytest.mark.parametrize("W", [
-        np.linspace(1.01, 4.99, 50),
-        np.linspace(1.001, 4.999, 100),
-    ])
+    @pytest.mark.parametrize(
+        "W",
+        [
+            np.linspace(1.01, 4.99, 50),
+            np.linspace(1.001, 4.999, 100),
+        ],
+    )
     def test_stability(self, W):
         """Phase space must be stable across the full energy range."""
         ps = PhaseSpace(W0=5.0)
         from tests.common.test_property_tests import _test_full_range_stability
+
         _test_full_range_stability(ps, W, component_name="PhaseSpace")