feat: tighten ai concurrency settings

tests/test_appconfig.py

@@ -62,6 +62,45 @@ class AppConfigTests(TempDirMixin, unittest.TestCase):
 
         self.assert_removed(temp_dir)
 
+    def test_ai_concurrency_and_retry_are_clamped(self):
+        with self.make_temp_dir() as temp_dir:
+            config_path = os.path.join(temp_dir, "config.json")
+
+            with open(config_path, "w", encoding="utf-8") as fh:
+                json.dump(
+                    {
+                        "ai": {
+                            "title_concurrency": 0,
+                            "image_concurrency": 64,
+                            "retry": 20,
+                        }
+                    },
+                    fh,
+                )
+
+            loaded = appconfig.load_config(config_path)
+            ai = appconfig.ai_config(loaded)
+            self.assertEqual(1, ai["title_concurrency"])
+            self.assertEqual(5, ai["image_concurrency"])
+            self.assertEqual(10, ai["retry"])
+
+            saved = appconfig.save_config(
+                {
+                    "ai": {
+                        "title_concurrency": 3,
+                        "image_concurrency": 4,
+                        "retry": 2,
+                    }
+                },
+                path=config_path,
+            )
+            ai = appconfig.ai_config(saved)
+            self.assertEqual(3, ai["title_concurrency"])
+            self.assertEqual(4, ai["image_concurrency"])
+            self.assertEqual(2, ai["retry"])
+
+        self.assert_removed(temp_dir)
+
     def test_data_paths_resolve_under_default_data_dir(self):
         with self.make_temp_dir() as temp_dir:
             data_root = os.path.join(temp_dir, "data")

tests/test_gui.py

@@ -788,6 +788,13 @@ class GuiTests(TempDirMixin, unittest.TestCase):
             )
             self.addCleanup(tab.close)
 
+            self.assertEqual(1, tab.title_concurrency_spin.minimum())
+            self.assertEqual(5, tab.title_concurrency_spin.maximum())
+            self.assertEqual(1, tab.image_concurrency_spin.minimum())
+            self.assertEqual(5, tab.image_concurrency_spin.maximum())
+            self.assertEqual(0, tab.retry_spin.minimum())
+            self.assertEqual(10, tab.retry_spin.maximum())
+
             text_roles = [
                 tab.default_text_model_combo.itemData(index)
                 for index in range(tab.default_text_model_combo.count())