feat: 添加订单详情和退款功能，更新用户角色管理，增强超级管理员鉴权

backend/app/http/super/dto/order_refund.go

@@ -0,0 +1,10 @@
+package dto
+
+type SuperOrderRefundForm struct {
+	// Force indicates bypassing the default refund window check (paid_at + 24h).
+	Force bool `json:"force,omitempty"`
+	// Reason is the human-readable refund reason used for audit.
+	Reason string `json:"reason,omitempty"`
+	// IdempotencyKey ensures refund request is processed at most once.
+	IdempotencyKey string `json:"idempotency_key,omitempty"`
+}