feat(page): customize title with server name

Add server name prefix to page title when configured, showing environment-specific branding.

internal/controllers/pageController.go

@@ -20,7 +20,11 @@ func (c *PageController) Index() {
 	roadList := service.QueryRoad(ctx)
 	c.Data["roadList"] = roadList
 	c.Data["showStealConfig"] = web.AppConfig.DefaultBool("showStealConfig", true)
-	c.Data["title"] = web.AppConfig.DefaultString("baseSettings::subtitle", "聚合支付管理系统")
+	serverName := env.Get("serverName", "")
+	if serverName != "" {
+		serverName = fmt.Sprintf("(%s)", serverName)
+	}
+	c.Data["title"] = serverName + "聚合支付管理系统"
 	c.TplName = "index.html"
 }