feat: complete T-530 cmhub URL normalization

tests/test_appconfig.py

@@ -64,6 +64,34 @@ class AppConfigTests(TempDirMixin, unittest.TestCase):
 
         self.assert_removed(temp_dir)
 
+    def test_cmhub_base_url_normalizes_to_gateway_root(self):
+        cases = {
+            "https://cmhub.example.com/": "https://cmhub.example.com",
+            "https://cmhub.example.com/api": "https://cmhub.example.com",
+            "https://cmhub.example.com/api/v1/": "https://cmhub.example.com",
+            "https://cmhub.example.com/some/path?x=1": "https://cmhub.example.com",
+            "http://localhost:8000/api/v1": "http://localhost:8000",
+            "localhost:8000/api/v1": "localhost:8000",
+        }
+        for raw, expected in cases.items():
+            with self.subTest(raw=raw):
+                self.assertEqual(expected, appconfig.normalize_cmhub_base_url(raw))
+                self.assertEqual(
+                    expected + "/api/v1/models",
+                    appconfig.cmhub_request_url(raw, "/api/v1/models"),
+                )
+
+        with self.make_temp_dir() as temp_dir:
+            config_path = os.path.join(temp_dir, "config.json")
+            config = appconfig.default_config()
+            config["ai"]["cmhub"]["base_url"] = "https://cmhub.example.com/api/v1/"
+
+            saved = appconfig.save_config(config, path=config_path)
+            self.assertEqual("https://cmhub.example.com", saved["ai"]["cmhub"]["base_url"])
+            loaded = appconfig.load_config(config_path)
+            self.assertEqual("https://cmhub.example.com", loaded["ai"]["cmhub"]["base_url"])
+
+        self.assert_removed(temp_dir)
     def test_config_rejects_sensitive_fields(self):
         with self.make_temp_dir() as temp_dir:
             config_path = os.path.join(temp_dir, "config.json")