refactor(base): 优化协程作用域和空安全处理

- 将自定义CoroutineScope替换为lifecycleScope以避免内存泄漏
- 添加runCatching包装器处理潜在异常并记录错误日志
- 使用安全调用操作符替代强制调用防止空指针异常
- 在CountDownTimer中正确管理生命周期以避免内存泄漏
- 修复设备信息获取中的数组越界风险
- 统一异步操作的线程切换方式
- 保护Fragment中的_binding访问权限
- 改进相机助手对象引用的安全性检查

app/src/main/java/com/sw/platecabinet/activity/BaseActivity.kt

@@ -30,10 +30,10 @@ import com.sw.platecabinet.utils.IntervalExecutor
 import com.sw.platecabinet.utils.SpTool
 import com.sw.platecabinet.view.CustomLoadingDialog
 import com.sw.platecabinet.viewmodel.UserViewModel
-import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import timber.log.Timber
 
 /**
@@ -142,8 +142,7 @@ abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
                     onRightDoubleClick()
                 }
             )
-            val scope = CoroutineScope(Dispatchers.Main)
-            timeJob = scope.launch {
+            timeJob = lifecycleScope.launch {
                 DateTimeUtils.realTimeChineseDateFlow()
                     .collect { date ->
                         it.tvRightTime.text = date
@@ -347,7 +346,9 @@ abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
                         val alreadyExists = featureMatches.any { it }
                         if (!alreadyExists) {
                             //当前特征不存在，保存
-                            faceList.add(getNewFaceEntity(model))
+                            runCatching { getNewFaceEntity(model) }
+                                .onSuccess { faceList.add(it) }
+                                .onFailure { Timber.e(it, "人脸特征解码失败: userId=${model.userId}") }
                         }
                     }
                 }
@@ -378,13 +379,13 @@ abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
     }
 
     fun clearAllFace(block: () -> Unit) {
-        Thread {
+        lifecycleScope.launch(Dispatchers.IO) {
             val faceDao = FaceDatabase.getInstance(App.getContext()).faceDao()
             faceDao.deleteAll()
             faceDao.resetId()
             recognizeViewModel.refreshFaceList()
-            runOnUiThread { block() }
-        }.start()
+            withContext(Dispatchers.Main) { block() }
+        }
     }
 
     private var permissionCallback: ((isGranted: Boolean) -> Unit)? = null