feat(product-suite): add global generation history

tests/test_workers.py

@@ -22,6 +22,7 @@ from app.gui.workers import (
     ImageStudioPullImagesWorker,
     ProductSuiteAiWriteWorker,
     ProductSuiteGenerateWorker,
+    ProductSuiteHistoryExportWorker,
 )
 
 
@@ -229,6 +230,43 @@ class WorkerTests(unittest.TestCase):
         gen_title.assert_not_called()
         self.assertEqual(expected, result)
 
+    def test_product_suite_history_export_worker_uses_round_export_service(self):
+        worker = ProductSuiteHistoryExportWorker(
+            7,
+            "round-key",
+            "D:/exports",
+            db_path="suite.db",
+        )
+        expected = SimpleNamespace(
+            target_dir="D:/exports/main-shop_51100639510_20260717",
+            files=(object(), object()),
+            skipped_count=1,
+            cancelled=False,
+        )
+
+        with mock.patch(
+            "app.gui.workers.image_studio_export.export_generation_round",
+            return_value=expected,
+        ) as export_round:
+            result = worker.execute()
+
+        export_round.assert_called_once_with(
+            7,
+            "round-key",
+            "D:/exports",
+            path="suite.db",
+            should_stop=worker.should_cancel,
+        )
+        self.assertEqual(
+            {
+                "target_dir": expected.target_dir,
+                "file_count": 2,
+                "skipped_count": 1,
+                "cancelled": False,
+            },
+            result,
+        )
+
     def test_product_suite_worker_writes_generation_round_and_stable_slots(self):
         with tempfile.TemporaryDirectory() as temp_dir:
             db_path = os.path.join(temp_dir, "cmshopee.db")