update

lib/core/mining_manager.dart

@@ -15,6 +15,10 @@ class MiningManager {
   MiningTaskInfo? _currentTask;
   Timer? _taskMonitor;
   final StreamController<String> _minerLogController = StreamController<String>.broadcast();
+  final StreamController<void> _processExitController = StreamController<void>.broadcast();
+  
+  /// 进程退出事件流
+  Stream<void> get processExitStream => _processExitController.stream;
 
   /// 启动挖矿
   Future<bool> startMining(MiningTaskInfo task, MiningConfig config) async {
@@ -71,6 +75,7 @@ class MiningManager {
       _currentTask = task;
       _startTaskMonitor(task);
       _startLogCapture();
+      _monitorProcessExit();
 
       _logger.info('挖矿已启动 (PID: ${_currentProcess!.pid})');
       return true;
@@ -183,6 +188,28 @@ class MiningManager {
     });
   }
 
+  /// 监控进程退出
+  void _monitorProcessExit() {
+    if (_currentProcess == null) return;
+    
+    _currentProcess!.exitCode.then((exitCode) {
+      _logger.warning('挖矿进程已退出，退出码: $exitCode');
+      // 清理状态
+      _currentProcess = null;
+      final wasMining = _currentTask != null;
+      _currentTask = null;
+      _taskMonitor?.cancel();
+      _taskMonitor = null;
+      
+      // 发送进程退出事件
+      if (wasMining) {
+        _processExitController.add(null);
+      }
+    }).catchError((e) {
+      _logger.severe('监控进程退出失败: $e');
+    });
+  }
+
   /// 获取挖矿日志流
   Stream<String> get minerLogStream => _minerLogController.stream;
 
@@ -192,6 +219,7 @@ class MiningManager {
   /// 清理资源
   void dispose() {
     _minerLogController.close();
+    _processExitController.close();
   }
 }