feat(suite): confirm AI writing cost before request

tests/test_workers.py

@@ -8,7 +8,7 @@ os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
 
 from _helpers import REPO_ROOT  # noqa: F401
 
-from app import db, image_studio, image_studio_images, workers
+from app import cmhub_models, db, image_studio, image_studio_images, workers
 
 if workers.QT_IMPORT_ERROR is not None:
     raise unittest.SkipTest("PySide6 未安装")
@@ -18,6 +18,7 @@ from PySide6.QtWidgets import QApplication
 
 from app.workers import BaseWorker, run_worker
 from app.gui.workers import (
+    CMHubModelCatalogWorker,
     ImageStudioDownloadOriginalWorker,
     ImageStudioPullImagesWorker,
     ProductSuiteAiWriteWorker,
@@ -230,6 +231,35 @@ class WorkerTests(unittest.TestCase):
         gen_title.assert_not_called()
         self.assertEqual(expected, result)
 
+    def test_cmhub_model_catalog_worker_caches_models_without_exposing_key(self):
+        cmhub_models.clear_model_catalog_cache()
+        self.addCleanup(cmhub_models.clear_model_catalog_cache)
+        worker = CMHubModelCatalogWorker(
+            "https://cmhub.example.com/",
+            "sk-cmhub-secret",
+            connect_timeout=7,
+            use_system_proxy=True,
+        )
+        models = [{"alias": "vision-standard", "operation_type": "vision"}]
+
+        with mock.patch("app.gui.workers.ai.fetch_cmhub_models", return_value=models) as fetch:
+            result = worker.execute()
+
+        fetch.assert_called_once_with(
+            "https://cmhub.example.com",
+            "sk-cmhub-secret",
+            connect_timeout=7,
+            use_system_proxy=True,
+        )
+        self.assertEqual(models, result["models"])
+        self.assertEqual(
+            models,
+            cmhub_models.cached_model_catalog(
+                "https://cmhub.example.com",
+                "vision-standard",
+            ),
+        )
+
     def test_product_suite_history_export_worker_uses_round_export_service(self):
         worker = ProductSuiteHistoryExportWorker(
             7,