fix(MainScreenPresentation): 修正取餐重量计算逻辑

- 去除净重计算，改以实际重量做后续份数、价格、总重量计算
- 修正计价和取餐份数计算中使用的重量参数
- 调整本地数据订单中数量赋值，使用实际重量替代净重
- 在营养计算和柱状图绘制中扣减餐具重量，确保显示净重
- 保持取餐模式余量计量逻辑兼容，优化逻辑判断条件

app/src/main/java/com/sw/dualscreen/presentation/MainScreenPresentation.kt

@@ -689,9 +689,7 @@ class MainScreenPresentation(
         Timber.tag(TAG) .d("addFoodToOrder: ${weight == lastAddWeight}")
 //        if (weight == lastAddWeight) return
         lastAddWeight = weight
-        // 扣减餐具重量，后续份数、价格、总重量均以净重计算
-        val netWeight = (weight - activity.getDishWeight()).coerceAtLeast(0)
-        if (netWeight <= 10) {
+        if (weight <= 10) {
             //0-即放即取，1-余量计量
             mealPickupMode = SPUtil.getInstance().get(GlobalKey.KEY_PICKUP_MODE, 0) ?: 0
             if (foodOrderList.isNotEmpty() && mealPickupMode == 1) {
@@ -706,13 +704,13 @@ class MainScreenPresentation(
         }
         //val foodPrice = if (isMember) foodInfo.vipPrice else foodInfo.specPrice
         val foodPrice = (foodInfo.specPrice ?: 0.0) * memberDiscount
-        val eatNum = activity.getEatNum(netWeight.toDouble(), foodInfo.specWeight)
+        val eatNum = activity.getEatNum(weight.toDouble(), foodInfo.specWeight)
         val price = eatNum * foodPrice
         if (foodOrderList.isNotEmpty() && mealPickupMode == 1) {
             val last = foodOrderList.last()
             if (last.isLocalData) {
                 last.eatNum = eatNum
-                last.num = netWeight
+                last.num = weight
                 last.price = price
 //                foodOrderAdapter.submitList(foodOrderList)
                 foodOrderAdapter.notifyItemChanged(foodOrderList.lastIndex)
@@ -729,7 +727,7 @@ class MainScreenPresentation(
                 foodMaterialId = foodInfo.foodMaterialId,
                 specWeight = foodInfo.specWeight?.toInt() ?: 0,
                 orderFrom = 2,
-                num = netWeight,
+                num = weight,
                 eatNum = eatNum,
                 isLocalData = true
             )
@@ -755,6 +753,8 @@ class MainScreenPresentation(
         }
         var weight = value
         if (weight < 0) weight = 0
+        // 扣减餐具重量，后续营养计算、柱图绘制、取餐明细均以净重为准
+        weight = (weight - activity.getDishWeight()).coerceAtLeast(0)
         if (activity.settlementMode == 0) {
             activity.runOnUiThread {
                 addFoodToOrder(weight, currentFood!!)