修改SDR色准深色异常、修改保存结果深色模式异常

app/views/panels/main_layout.py

@@ -841,6 +841,15 @@ def _refresh_theme_toggle_label(self: "PQAutomationApp") -> None:
 
 def _on_toggle_theme(self: "PQAutomationApp") -> None:
     """切换主题：重新应用 ttk 样式并刷新所有自定义样式相关的标签。"""
+    # 在测试进行时禁止切换主题，避免影响测量稳定性
+    if getattr(self, "testing", False):
+        try:
+            if hasattr(self, "log_gui"):
+                self.log_gui.log("警告: 测试进行中，禁止切换主题", level="error")
+        except Exception:
+            pass
+        return
+
     from app.views.theme_manager import toggle_theme
     toggle_theme()
     # apply_modern_styles()