feat(payment): 添加会员折扣功能并重构支付逻辑

- 新增 getMemberDiscount 接口用于查询会员折扣
- 在人脸识别支付中集成会员折扣计算逻辑
- 将支付金额计算从 vipPrice 切换到 specPrice 并应用会员折扣
- 在初始化活动中添加设备配置获取功能
- 使用 ConstraintLayout 重构主餐品列表布局
- 添加 Timber 日志框架替换原有 Log 工具
- 重构 MainScreenPresentation 中的食物价格计算逻辑
- 移除重复的设备配置获取代码，统一在 InitActivity 中处理

app/src/main/java/com/sw/dualscreen/activity/PayActivity.kt

@@ -166,6 +166,8 @@ class PayActivity : BaseActivity<ActivityPayBinding>() {
         super.onDestroy()
     }
 
+    var memberDiscount = 1.0
+
     var memberInfo: MemberInfo? = null
     fun showPayInfo(type: Int = 1, isVip: Boolean = false, memberInfo: MemberInfo? = null) {
         this.memberInfo = memberInfo
@@ -191,9 +193,19 @@ class PayActivity : BaseActivity<ActivityPayBinding>() {
             it.type = type
             it.foodName = foodInfo?.foodName
             //确认使用vipPrice 还是 specPrice
-            val onePrice = if (isVip) foodInfo?.vipPrice else foodInfo?.specPrice
-            it.totalPrice = (onePrice ?: 0.0) * eatNum
-            presentation.initView()
+            //val onePrice = if (isVip) foodInfo?.vipPrice else foodInfo?.specPrice
+            if (isVip) {
+                userViewModel.getMemberDiscount(memberInfo?.faceUserId?:"") { discount ->
+                    memberDiscount = if (discount == null) 1.0 else discount / 10
+                    var onePrice = foodInfo?.specPrice ?: 0.0
+                    onePrice = if (isVip) onePrice * memberDiscount else onePrice
+                    it.totalPrice = onePrice * eatNum
+                    presentation.initView()
+                }
+            } else {
+                it.totalPrice = (foodInfo?.specPrice ?: 0.0) * eatNum
+                presentation.initView()
+            }
         }
     }