feat: default workflow batch filters to latest batch

tests/test_gui.py

@@ -86,6 +86,17 @@ class GuiTests(TempDirMixin, unittest.TestCase):
         self.assertIsNotNone(value)
         self.assertEqual(color, value.name())
 
+    def set_batch_created_at(self, cfg, batch_id, created_at):
+        conn = db.connect(cfg["db_path"])
+        try:
+            with conn:
+                conn.execute(
+                    "UPDATE batches SET created_at = ?, updated_at = ? WHERE id = ?",
+                    (created_at, created_at, batch_id),
+                )
+        finally:
+            conn.close()
+
     def make_fake_message_box(self, selected_label):
         boxes = []
 
@@ -511,6 +522,53 @@ class GuiTests(TempDirMixin, unittest.TestCase):
 
         self.assert_removed(temp_dir)
 
+    def test_workflow_batch_filters_default_to_latest_batch_and_remember_selection(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+
+            for tab_class in (CollectTab, GenerateTab, ApplyTab):
+                tab = tab_class(config=cfg)
+                self.addCleanup(tab.close)
+                self.assertEqual(0, tab.batch_filter.currentIndex())
+                self.assertIsNone(tab.batch_filter.currentData())
+
+            accounts.create_account("主店", "alias-a", debug_port=9222, config=cfg)
+            older_batch = db.create_batch(["older.xlsx"], path=cfg["db_path"])
+            newer_batch = db.create_batch(["newer.xlsx"], path=cfg["db_path"])
+            self.set_batch_created_at(cfg, older_batch, "2026-07-08T10:00:00")
+            self.set_batch_created_at(cfg, newer_batch, "2026-07-08T11:00:00")
+            for batch_id, item_id in ((older_batch, "1001"), (newer_batch, "2001")):
+                db.insert_tasks(
+                    batch_id,
+                    [
+                        {
+                            "source_file_abs": os.path.join(temp_dir, f"{item_id}.xlsx"),
+                            "source_sheet": "商品",
+                            "source_row": 2,
+                            "account_name": "Excel主店",
+                            "alias": "alias-a",
+                            "item_id": item_id,
+                        }
+                    ],
+                    path=cfg["db_path"],
+                )
+
+            for tab_class in (CollectTab, GenerateTab, ApplyTab):
+                tab = tab_class(config=cfg)
+                self.addCleanup(tab.close)
+                self.assertEqual(newer_batch, tab.batch_filter.currentData())
+                self.assertEqual(1, tab.batch_filter.currentIndex())
+
+                tab.batch_filter.setCurrentIndex(tab.batch_filter.findData(older_batch))
+                tab.refresh_tasks()
+                self.assertEqual(older_batch, tab.batch_filter.currentData())
+
+                tab.batch_filter.setCurrentIndex(tab.batch_filter.findData(None))
+                tab.refresh_tasks()
+                self.assertIsNone(tab.batch_filter.currentData())
+
+        self.assert_removed(temp_dir)
+
     def test_settings_tab_loads_ai_models_and_masks_key_field(self):
         with self.make_temp_dir() as temp_dir:
             cfg = self.make_config(temp_dir)
@@ -2750,6 +2808,7 @@ class GuiTests(TempDirMixin, unittest.TestCase):
 
             tab = ApplyTab(config=cfg)
             self.addCleanup(tab.close)
+            tab.batch_filter.setCurrentIndex(tab.batch_filter.findData(None))
 
             self.assertIsInstance(tab.task_table, QTableView)
             self.assertEqual(["店铺", "商品ID", "新标题", "新封面", "阶段", "结果"], tab.model.HEADERS)
@@ -3718,6 +3777,7 @@ class GuiTests(TempDirMixin, unittest.TestCase):
 
             tab = GenerateTab(config=cfg)
             self.addCleanup(tab.close)
+            tab.batch_filter.setCurrentIndex(tab.batch_filter.findData(None))
 
             self.assertEqual("generateItemFilter", tab.item_filter.objectName())
             self.assertEqual(4, tab.model.rowCount())
@@ -4243,9 +4303,11 @@ class GuiTests(TempDirMixin, unittest.TestCase):
             statuses = []
             tab = CollectTab(config=cfg, status_callback=statuses.append)
             self.addCleanup(tab.close)
+            created = {}
 
             def fake_import(file_paths, path=None):
                 batch_id = db.create_batch(file_paths, path=path)
+                created["batch_id"] = batch_id
                 db.insert_tasks(
                     batch_id,
                     [
@@ -4290,6 +4352,7 @@ class GuiTests(TempDirMixin, unittest.TestCase):
             self.assertIn("匹配1", tab.summary_label.text())
             self.assertEqual("", tab.show_unmatched_button.styleSheet())
             self.assertIn("入库1", statuses[-1])
+            self.assertEqual(created["batch_id"], tab.batch_filter.currentData())
 
         self.assert_removed(temp_dir)