diff --git a/Furious/Qt/QtWidgets.py b/Furious/Qt/QtWidgets.py
index 456b26fa..67bc7f29 100644
--- a/Furious/Qt/QtWidgets.py
+++ b/Furious/Qt/QtWidgets.py
@@ -1163,6 +1163,7 @@ class AppQMessageBox(AppQTransientDialog):
             | QtCore.Qt.WindowType.FramelessWindowHint
             | QtCore.Qt.WindowType.NoDropShadowWindowHint
         )
+
         self.setWindowFlags(windowFlags)
 
         self.setAttribute(
@@ -1176,6 +1177,7 @@ class AppQMessageBox(AppQTransientDialog):
             QPalette.ColorRole.Window,
             QColor(QtCore.Qt.GlobalColor.transparent),
         )
+
         self.setPalette(windowPalette)
 
         self.setModal(True)
diff --git a/Furious/Service/SubscriptionSync.py b/Furious/Service/SubscriptionSync.py
index 8e6d7d30..b47bfe48 100644
--- a/Furious/Service/SubscriptionSync.py
+++ b/Furious/Service/SubscriptionSync.py
@@ -241,6 +241,7 @@ class SubscriptionSynchronizer:
             if profile.itemSubscription == groupId and profile.itemSubscriptionManaged
         ]
         insertionIndex = min(managedIndexes) if managedIndexes else len(profiles)
+
         existingByKey = {
             legacyKeys.get(
                 id(profiles[index]),
diff --git a/Furious/Widget/EndpointInfoWidget.py b/Furious/Widget/EndpointInfoWidget.py
index 9667b0ed..c7cdb38c 100644
--- a/Furious/Widget/EndpointInfoWidget.py
+++ b/Furious/Widget/EndpointInfoWidget.py
@@ -727,6 +727,7 @@ class EndpointInfoWidget(Mixins.ThemeAware, Mixins.QTranslatable, QFrame):
         super().__init__(parent)
 
         self.service = service
+
         self.setObjectName('MetricsSection')
         self.setMinimumHeight(360)
 
@@ -899,6 +900,7 @@ class EndpointInfoWidget(Mixins.ThemeAware, Mixins.QTranslatable, QFrame):
             mapMessage = ''
 
         self.mapWidget.setLocation(location, mapMessage, loading=mapLoading)
+
         self._setLoadingAnimationsEnabled(self.isVisible())
 
     def _setLoadingAnimationsEnabled(self, enabled):
diff --git a/tests/fixtures/shutdown_probe.py b/tests/fixtures/shutdown_probe.py
index c0f94d00..10ff89ac 100644
--- a/tests/fixtures/shutdown_probe.py
+++ b/tests/fixtures/shutdown_probe.py
@@ -209,6 +209,7 @@ def runShutdownProbe(mode, *, timeout=0.5, exitcode=0, idleMilliseconds=0):
     """Return actual child reaping and exit classification, with a test failsafe."""
     with tempfile.TemporaryDirectory(prefix='furious-shutdown-') as directory:
         path = str(Path(directory) / 'events.txt')
+
         # The child may be killed before publishing any events. Preserve an
         # empty log so the result still exposes its exit/deadline diagnostics.
         Path(path).touch()
@@ -241,6 +242,7 @@ def runShutdownProbe(mode, *, timeout=0.5, exitcode=0, idleMilliseconds=0):
 
         try:
             result = process.waitForExit()
+
             return {
                 'mode': mode,
                 'exitcode': result,
diff --git a/tests/test_application_process.py b/tests/test_application_process.py
index 8f4fc2ef..4055d0dd 100644
--- a/tests/test_application_process.py
+++ b/tests/test_application_process.py
@@ -247,6 +247,7 @@ class AppMainProcessTest(unittest.TestCase):
                     ApplicationRunner.ExitCode.UnknownException.value,
                     result,
                 )
+
                 self.assertEqual(
                     diagnostic.count('Traceback (most recent call last):'), 1, result
                 )
diff --git a/tests/test_controllers.py b/tests/test_controllers.py
index ab73b052..14f83c2d 100644
--- a/tests/test_controllers.py
+++ b/tests/test_controllers.py
@@ -937,6 +937,7 @@ class RoutingControllerTest(unittest.TestCase):
                 mock.patch('sys.excepthook') as exceptionHook,
             ):
                 AppSettings.set('Routing', 'Custom:active')
+
                 controller = RoutingController()
 
                 with mock.patch.object(app, 'routingController', controller):
@@ -954,6 +955,7 @@ class RoutingControllerTest(unittest.TestCase):
                         )
 
                         prompt = view.findChild(MBoxNewChangesNextTime)
+
                         self.assertIsNotNone(prompt)
 
                         prompt.button(AppQMessageBox.StandardButton.Yes).click()
@@ -970,6 +972,7 @@ class RoutingControllerTest(unittest.TestCase):
                         view.indexWidget(view.sourceModel.index(0, 2)).setCurrentIndex(
                             0
                         )
+
                         tray.rebuildMenu()
 
                         self.assertEqual(controller.routing, fallback)
@@ -1013,6 +1016,7 @@ class RoutingControllerTest(unittest.TestCase):
                         view.indexWidget(view.sourceModel.index(0, 2)).setCurrentIndex(
                             0
                         )
+
                         tray.rebuildMenu()
 
                         self.assertEqual(controller.routing, fallback)
@@ -1021,13 +1025,17 @@ class RoutingControllerTest(unittest.TestCase):
                         exceptionHook.assert_not_called()
                     finally:
                         connection.startDisconnection()
+
                         view.deleteLater()
                         controller.deleteLater()
+
                         processQtEvents()
 
             connection.deleteLater()
             logManager.deleteLater()
+
             registry.shutdown()
+
             processQtEvents()
 
     def testOnlyExplicitInvalidationPersistsFallbackWithoutReconnecting(self):
diff --git a/tests/test_endpoint_info.py b/tests/test_endpoint_info.py
index 4bd66327..e6d7e0a4 100644
--- a/tests/test_endpoint_info.py
+++ b/tests/test_endpoint_info.py
@@ -841,6 +841,7 @@ class EndpointInfoServiceTest(unittest.TestCase):
         self.assertIsInstance(widget.mapWidget.webView, QWebEngineView)
         self.assertEqual(widget.mapWidget.webProfile.httpUserAgent(), 'Mozilla/5.0')
         self.assertNotIn('Furious', widget.mapWidget.webProfile.httpUserAgent())
+
         self.assertTrue(widget.mapWidget._lastWebState['markerVisible'])
         self.assertEqual(
             widget.mapWidget._lastWebState['fontFamily'],
@@ -942,6 +943,7 @@ class EndpointInfoServiceTest(unittest.TestCase):
         self.assertIn("'source-layer': 'place'", mapScript)
         self.assertIn("'source-layer': 'poi'", mapScript)
         self.assertIn("'text-field': nameField", mapScript)
+
         self.assertIn('Number.isFinite(longitude)', mapScript)
         self.assertNotIn('lightStyleUrl', widget.mapWidget._lastWebState)
         self.assertNotIn('darkStyleUrl', widget.mapWidget._lastWebState)
diff --git a/tests/test_hysteria2_compatibility.py b/tests/test_hysteria2_compatibility.py
index 735633cb..62a1ed1e 100644
--- a/tests/test_hysteria2_compatibility.py
+++ b/tests/test_hysteria2_compatibility.py
@@ -286,6 +286,7 @@ class Hysteria2CompatibilityTest(unittest.TestCase):
             for theme in (AppStyleSheet.Light, AppStyleSheet.Dark):
                 with self.subTest(theme=theme):
                     app.setStyleSheet(AppStyleSheet.forTheme(theme))
+
                     editor = Hysteria2Editor()
                     editor.show()
                     app.processEvents()
@@ -334,6 +335,7 @@ class Hysteria2CompatibilityTest(unittest.TestCase):
                             editor.groupBoxSequence(), firstWidgets
                         )
                     )
+
                     self.assertEqual(len(set(firstPositions)), 1)
 
                     row = advanced.optionsRow._widget
diff --git a/tests/test_log_manager_generation.py b/tests/test_log_manager_generation.py
index bba4a3b5..796d7673 100644
--- a/tests/test_log_manager_generation.py
+++ b/tests/test_log_manager_generation.py
@@ -204,11 +204,13 @@ def _assertManagerInvariants(testCase, manager, model=None):
 
             for categoryId, categoryEntries in generation.entriesByCategory.items():
                 category = manager._categories[categoryId]
+
                 testCase.assertIs(
                     manager._generationForCategoryLocked(category), generation
                 )
 
                 indexed = tuple(categoryEntries.entries.values())
+
                 testCase.assertTrue(indexed)
                 testCase.assertEqual(
                     tuple(entry.sequence for entry in indexed),
@@ -901,35 +903,44 @@ class GenerationLogManagerContractTest(unittest.TestCase):
 
             for message, categoryId in messages:
                 manager.append(message, categoryId)
+
                 self.assertTrue(waitFor(lambda: not page._entriesDirty))
                 self.assertPageMatchesManager(page, manager)
 
             coreIndex = page.filterComboBox.findData(CORE_LOG_CATEGORY)
             page.filterComboBox.setCurrentIndex(coreIndex)
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
             self.assertPageMatchesManager(page, manager, CORE_LOG_CATEGORY)
 
             manager.clear(CORE_LOG_CATEGORY)
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
             self.assertPageMatchesManager(page, manager, CORE_LOG_CATEGORY)
 
             manager.append('runtime\ncore', CORE_LOG_CATEGORY)
             manager.append('runtime\rcomponent', TUN_LOG_CATEGORY)
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
             self.assertPageMatchesManager(page, manager, CORE_LOG_CATEGORY)
 
             manager.clear(runtimeOnly=True)
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
             self.assertPageMatchesManager(page, manager, CORE_LOG_CATEGORY)
 
             allIndex = page.filterComboBox.findData('all')
             page.filterComboBox.setCurrentIndex(allIndex)
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
             self.assertPageMatchesManager(page, manager)
 
             manager.append('before\nfull clear')
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
+
             manager.clear()
+
             self.assertTrue(waitFor(lambda: not page._entriesDirty))
             self.assertPageMatchesManager(page, manager)
 
diff --git a/tests/test_profile_test_jobs.py b/tests/test_profile_test_jobs.py
index d1effdfd..10c4ea55 100644
--- a/tests/test_profile_test_jobs.py
+++ b/tests/test_profile_test_jobs.py
@@ -1423,6 +1423,7 @@ assert not errors, errors
             profile.metadata.speed = f'{profile.itemRemark} speed'
 
         manager = self._manager((retained, removed, other, manual))
+
         latencyScheduler = manager._latencyScheduler
         pool = _ControlledThreadPool()
         latencyScheduler.threadPool = pool
@@ -1434,6 +1435,7 @@ assert not errors, errors
             concurrent=False,
         )
         manager.testDownloadSpeed((retained,), concurrent=True)
+
         processQtEvents()
 
         activeLatency = pool.started[0]
@@ -1487,6 +1489,7 @@ assert not errors, errors
         self.assertEqual(len(pool.started), 2)
 
         otherLatency = pool.started[1]
+
         otherLatency.finish('9ms')
         processQtEvents()
 
diff --git a/tests/test_sing_tun_linux_host.py b/tests/test_sing_tun_linux_host.py
index 9b7d8d09..6549ebf1 100644
--- a/tests/test_sing_tun_linux_host.py
+++ b/tests/test_sing_tun_linux_host.py
@@ -103,6 +103,7 @@ class SingTUNLinuxHostTest(unittest.TestCase):
             Path(arguments[2]).parent.joinpath('ready').write_text(
                 '77', encoding='utf-8'
             )
+
             return process
 
         link = {'ifname': 'utun101', 'ifindex': 77}
@@ -117,8 +118,10 @@ class SingTUNLinuxHostTest(unittest.TestCase):
             self.module, '_command', return_value=json.dumps([link])
         ):
             self.host.prepare()
+
             with self.assertRaisesRegex(RuntimeError, 'already active'):
                 self.host.execute([])
+
             self.host.applyDNS('1.1.1.1')
 
         self.assertEqual(self.host.index, 77)
@@ -135,6 +138,7 @@ class SingTUNLinuxHostTest(unittest.TestCase):
         self.assertIn('/sys/class/net/utun101/ifindex', scripts[0])
         self.assertIn('resolvectl dns utun101 1.1.1.1', scripts[0])
         self.assertNotIn('socks5', ''.join(scripts))
+
         self.assertIs(self.host._process, process)
         self.assertIsNotNone(self.host._directory)
 
@@ -157,6 +161,7 @@ class SingTUNLinuxHostTest(unittest.TestCase):
                 checked = subprocess.run(
                     [bash, '-n', '-c', script], capture_output=True, timeout=5
                 )
+
                 self.assertEqual(
                     checked.returncode, 0, checked.stderr.decode(errors='replace')
                 )
diff --git a/tests/test_stylesheet_states.py b/tests/test_stylesheet_states.py
index efad2c43..a7244a8b 100644
--- a/tests/test_stylesheet_states.py
+++ b/tests/test_stylesheet_states.py
@@ -429,6 +429,7 @@ class StyleSheetStateRenderingTest(unittest.TestCase):
                         buttons = edit.findChildren(QToolButton)
                         self.assertEqual(len(buttons), 1)
                         button = buttons[0]
+
                         self.assertTrue(edit.rect().contains(button.geometry()))
                         self.assertLessEqual(
                             abs(
@@ -439,6 +440,7 @@ class StyleSheetStateRenderingTest(unittest.TestCase):
                         )
 
                         self.assertFalse(button.icon().isNull())
+
                         pixmap = button.icon().pixmap(16, 16).toImage()
                         colors = [
                             pixmap.pixelColor(x, y)
@@ -464,6 +466,7 @@ class StyleSheetStateRenderingTest(unittest.TestCase):
 
             edit.setText('read only')
             edit.setReadOnly(True)
+
             app.setStyleSheet(AppStyleSheet.forTheme(AppStyleSheet.Light))
             processQtEvents()