修bug

internal/app/api/router.go

@@ -140,7 +140,7 @@ func (a *API) setupRoutes() {
 			pigBatchGroup.DELETE("/:id", a.pigBatchController.DeletePigBatch)                                             // 删除猪群
 			pigBatchGroup.POST("/assign-pens/:id", a.pigBatchController.AssignEmptyPensToBatch)                           // 为猪群分配空栏
 			pigBatchGroup.POST("/reclassify-pen/:fromBatchID", a.pigBatchController.ReclassifyPenToNewBatch)              // 将猪栏划拨到新群
-			penGroup.DELETE("/remove-pen/:penID/:batchID", a.pigBatchController.RemoveEmptyPenFromBatch)                  // 从猪群移除空栏
+			pigBatchGroup.DELETE("/remove-pen/:penID/:batchID", a.pigBatchController.RemoveEmptyPenFromBatch)             // 从猪群移除空栏
 			pigBatchGroup.POST("/move-pigs-into-pen/:id", a.pigBatchController.MovePigsIntoPen)                           // 将猪只从“虚拟库存”移入指定猪栏
 			pigBatchGroup.POST("/sell-pigs/:id", a.pigBatchController.SellPigs)                                           // 处理卖猪业务
 			pigBatchGroup.POST("/buy-pigs/:id", a.pigBatchController.BuyPigs)                                             // 处理买猪业务