feat(app): 添加环境切换功能并优化基础URL管理

- 在主界面标题时间区域添加点击事件，支持弹出环境切换对话框
- 新增EnvSwitchDialog类实现TEST/UAT/PROD三套环境切换功能
- 新增dialog_env_switch.xml布局文件定义环境切换弹窗UI
- 重构GlobalData类，统一管理基础URL常量并添加持久化支持
- 修改MyApp初始化逻辑，优先读取用户手动设置的环境配置
- 添加SpTool.baseUrl属性用于环境配置的本地存储
- 修复MainActivity布局文件中的TextView垂直内边距问题
- 调整食物识别防抖时间从500ms到3000ms，优化计算营养逻辑执行时机

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

@@ -102,7 +102,7 @@ class MainScreenPresentation(
     //    private var userNutritionData: UserNutritionData? = null
     private var userNutrition: UserNutrition? = null
     private var dinnerTypeInfo: DinnerType? = null
-    private val debouncer = Debouncer(500)
+    private val debouncer = Debouncer(3000)
     private var recognitionTime: Long = 0L // 人脸识别时的时间
     var recognitionWeight: Int = 0 // 人脸识别时的重量
 
@@ -771,14 +771,14 @@ class MainScreenPresentation(
         if (currentFood == null || userNutrition == null) {
             return
         }
-        var weight = value
-        if (weight < 0) weight = 0
-        if (activity.settlementMode == 0) {
-            activity.runOnUiThread {
-                addFoodToOrder(weight, currentFood!!)
-            }
-        }
         debouncer.debounce {
+            var weight = value
+            if (weight < 0) weight = 0
+            if (activity.settlementMode == 0) {
+                activity.runOnUiThread {
+                    addFoodToOrder(weight, currentFood!!)
+                }
+            }
             Timber.tag(TAG)
                 .d("calculateNutrition weight = $weight, recognitionWeight = $recognitionWeight")
             val dinnerType = dinnerTypeInfo?.dinnerType