chore(project): 初始化项目基础配置文件

- 添加 CodeGraph、Android 和通用 gitignore 配置
- 创建项目元数据文件跟踪 Flutter 项目属性
- 添加 Codex AI 指导文档 AGENTS.md 说明项目架构
- 配置代码分析选项 analysis_options.yaml
- 设置 Android 应用清单权限和 Kiosk 模式配置
- 实现中英文国际化支持 AppLocalizations
- 配置 GoRouter 应用路由导航
- 创建明亮工业控制风格的主题配置 AppTheme

lib/features/device/models/device_state.dart

@@ -0,0 +1,73 @@
+/// 设备状态模型
+enum DeviceStatus { idle, running, paused, error }
+
+/// 设备状态数据
+class DeviceState {
+  final DeviceStatus status;
+  final String? currentProgram;
+  final String? currentPosition;
+  final int? currentStepNo;
+  final String? currentStepName;
+  final int? remainingSeconds;
+  final double? progress;
+  final bool lightingOn;
+
+  DeviceState({
+    this.status = DeviceStatus.idle,
+    this.currentProgram,
+    this.currentPosition,
+    this.currentStepNo,
+    this.currentStepName,
+    this.remainingSeconds,
+    this.progress,
+    this.lightingOn = false,
+  });
+
+  bool get isRunning => status == DeviceStatus.running;
+  bool get isPaused => status == DeviceStatus.paused;
+  bool get isIdle => status == DeviceStatus.idle;
+  bool get hasError => status == DeviceStatus.error;
+
+  String statusText() {
+    switch (status) {
+      case DeviceStatus.running:
+        return '运行中';
+      case DeviceStatus.paused:
+        return '已暂停';
+      case DeviceStatus.error:
+        return '错误';
+      case DeviceStatus.idle:
+        return '未运行';
+    }
+  }
+
+  String formatRemainingTime() {
+    if (remainingSeconds == null) return '--:--:--';
+    final hours = remainingSeconds! ~/ 3600;
+    final minutes = (remainingSeconds! % 3600) ~/ 60;
+    final seconds = remainingSeconds! % 60;
+    return '${hours.toString().padLeft(2, '0')}:${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
+  }
+
+  DeviceState copyWith({
+    DeviceStatus? status,
+    String? currentProgram,
+    String? currentPosition,
+    int? currentStepNo,
+    String? currentStepName,
+    int? remainingSeconds,
+    double? progress,
+    bool? lightingOn,
+  }) {
+    return DeviceState(
+      status: status ?? this.status,
+      currentProgram: currentProgram ?? this.currentProgram,
+      currentPosition: currentPosition ?? this.currentPosition,
+      currentStepNo: currentStepNo ?? this.currentStepNo,
+      currentStepName: currentStepName ?? this.currentStepName,
+      remainingSeconds: remainingSeconds ?? this.remainingSeconds,
+      progress: progress ?? this.progress,
+      lightingOn: lightingOn ?? this.lightingOn,
+    );
+  }
+}