fix(scale): 修复主从设备IP显示异常及RecyclerView滑动崩溃

- 新增 NetworkUtil 统一获取本机IP，兼容 Android 12+（ConnectivityManager）和低版本（WifiManager）
- 主设备IP改为实时读取，修复App启动时网络未就绪导致IP缓存为空的问题
- MasterScaleActivity/SlaveActivity 关闭RecyclerView默认ItemAnimator，消除高频刷新时的闪烁
- BaseActivity.hideSystemBars 加防重入标志，避免重复调用setDecorFitsSystemWindows触发布局重绘导致滑动崩溃
- 新增 CrashHandler，崩溃时记录日志并自动重启应用

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/java/com/shuwei/dish/match/ui/MasterScaleActivity.kt

@@ -14,6 +14,7 @@ import com.shuwei.dish.match.databinding.ActivityMasterScaleBinding
 import com.shuwei.dish.match.databinding.ListItemScaleDataBinding
 import com.shuwei.dish.match.scale.ScaleData
 import com.shuwei.dish.match.scale.ScaleServiceManager
+import com.shuwei.dish.match.utils.NetworkUtil
 import com.shuwei.dish.match.utils.WeightUtil
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
@@ -50,6 +51,7 @@ class MasterScaleActivity : BaseActivity() {
         setHeaderBackground()
 
         binding.rvScaleList.layoutManager = LinearLayoutManager(this)
+        binding.rvScaleList.itemAnimator = null  // 关闭默认动画，避免数据频繁更新时出现闪烁错乱
         binding.rvScaleList.adapter = adapter
 
         observeScaleData()
@@ -66,6 +68,8 @@ class MasterScaleActivity : BaseActivity() {
             flow.collectLatest { scaleMap ->
                 // 按 deviceId 分组，本机设备排最前，其余按 deviceId 排序
                 val localId = com.shuwei.dish.match.base.GlobalData.deviceId
+                // 本机 IP 实时读取，避免 App 启动时网络未就绪导致缓存为空
+                val localIp = NetworkUtil.getLocalIpAddress(this@MasterScaleActivity)
                 val groups = scaleMap.values
                     .groupBy { it.deviceId }
                     .entries
@@ -73,7 +77,8 @@ class MasterScaleActivity : BaseActivity() {
                     .map { (deviceId, scales) ->
                         DeviceGroup(
                             deviceId = deviceId,
-                            ip = scales.firstOrNull()?.ip ?: "",
+                            ip = if (deviceId == localId) localIp
+                                 else scales.firstOrNull { it.ip.isNotEmpty() }?.ip ?: "",
                             scales = scales.sortedBy { it.address }
                         )
                     }

app/src/main/java/com/shuwei/dish/match/ui/SlaveActivity.kt

@@ -1,7 +1,6 @@
 package com.shuwei.dish.match.ui
 
 import android.annotation.SuppressLint
-import android.net.wifi.WifiManager
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.ViewGroup
@@ -12,6 +11,7 @@ import com.shuwei.dish.match.base.GlobalData
 import com.shuwei.dish.match.databinding.ActivitySlaveBinding
 import com.shuwei.dish.match.databinding.ListItemScaleRowBinding
 import com.shuwei.dish.match.scale.ScaleServiceManager
+import com.shuwei.dish.match.utils.NetworkUtil
 import com.shuwei.dish.match.utils.WeightUtil
 
 /**
@@ -41,6 +41,7 @@ class SlaveActivity : BaseActivity() {
         binding.tvDeviceId.text = "设备：${GlobalData.deviceId}"
         binding.tvDeviceIp.text = "IP：${getLocalIpAddress()}"
         binding.rvScaleList.layoutManager = LinearLayoutManager(this)
+        binding.rvScaleList.itemAnimator = null  // 关闭默认动画，避免数据频繁更新时出现闪烁错乱
         binding.rvScaleList.adapter = adapter
 
         updateMasterStatus(false)
@@ -101,19 +102,11 @@ class SlaveActivity : BaseActivity() {
     }
 
     /**
-     * 获取本机 WiFi IP 地址
-     * 优先使用 WifiManager，获取失败时返回"未知"
+     * 获取本机局域网 IP，委托给 NetworkUtil 统一处理版本兼容
+     * 获取失败时返回"未知"
      */
-    @SuppressLint("WifiManagerLeak")
     private fun getLocalIpAddress(): String {
-        return try {
-            val wifiManager = applicationContext.getSystemService(WIFI_SERVICE) as WifiManager
-            val ip = wifiManager.connectionInfo.ipAddress
-            if (ip == 0) "未知" else
-                "${ip and 0xFF}.${ip shr 8 and 0xFF}.${ip shr 16 and 0xFF}.${ip shr 24 and 0xFF}"
-        } catch (e: Exception) {
-            "未知"
-        }
+        return NetworkUtil.getLocalIpAddress(this).ifEmpty { "未知" }
     }
 
     private class ScaleAdapter(private val data: List<ScaleItem>) :