feat: refresh Tencent quotes from GUI

src/grid_trading/ui/main_window.py

@@ -159,7 +159,7 @@ class MainWindow(QMainWindow):
     def _create_toolbar(self) -> QHBoxLayout:
         layout = QHBoxLayout()
         buttons = [
-            ("刷新", self.refresh_all),
+            ("刷新行情", self._refresh_quotes),
             ("账户设置", self._edit_account),
             ("添加标的", self._add_instrument),
             ("录入成交", self._add_trade),
@@ -187,6 +187,14 @@ class MainWindow(QMainWindow):
         self._fill_holdings_table()
         self._refresh_details()
 
+    def _refresh_quotes(self) -> None:
+        try:
+            self.service.refresh_quotes()
+        except Exception as exc:
+            QMessageBox.warning(self, "行情刷新失败", str(exc))
+            return
+        self.refresh_all()
+
     def _fill_holdings_table(self) -> None:
         self.holdings_table.setRowCount(len(self._positions))
         for row, position in enumerate(self._positions):