fix: 添加用户取消订单 + 管理员手动退款端点

src/handlers/payment.rs

@@ -1003,6 +1003,25 @@ pub async fn sync_order(
     })))
 }
 
+/// POST /api/payment/cancel-order — 用户主动取消待支付订单
+#[derive(Debug, Deserialize)]
+pub struct CancelOrderRequest {
+    pub order_id: String,
+}
+
+#[post("/api/payment/cancel-order")]
+pub async fn cancel_order(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+    body: web::Json<CancelOrderRequest>,
+) -> Result<HttpResponse, AppError> {
+    db::cancel_payment_order(pool.get_ref(), &body.order_id, claims.user_id).await?;
+    Ok(HttpResponse::Ok().json(serde_json::json!({
+        "success": true,
+        "message": "订单已取消"
+    })))
+}
+
 /// GET /api/payment/orders — 获取当前用户的订单记录
 #[get("/api/payment/orders")]
 pub async fn get_user_orders(