更新管理后台布局，优化菜单项标签，新增支付配置项。同时，调整API响应字段命名，确保一致性，提升代码可读性和维护性。

soul-api/internal/handler/orders.go

@@ -0,0 +1,20 @@
+package handler
+
+import (
+	"net/http"
+
+	"soul-api/internal/database"
+	"soul-api/internal/model"
+
+	"github.com/gin-gonic/gin"
+)
+
+// OrdersList GET /api/orders
+func OrdersList(c *gin.Context) {
+	var orders []model.Order
+	if err := database.DB().Order("created_at DESC").Find(&orders).Error; err != nil {
+		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error(), "orders": []interface{}{}})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"success": true, "orders": orders})
+}