feat(device): 添加USB设备通信支持和程序参数优化

- 在AndroidManifest.xml中添加USB Host权限和设备过滤器配置
- 新增设备控制国际化词条包括速度档位、吹气时间等
- 重构数据库结构将速度相关字段统一为档位数值存储
- 添加通用KV存储方法用于settings表数据读写
- 优化首页导航实现tab间跳转和状态保持功能
- 更新程序详情页面布局和参数表单界面
- 移除模拟运行器相关测试代码
- 添加USB串口通信依赖包usb_serial

lib/features/programs/models/step.dart

@@ -8,10 +8,8 @@ class Step {
   final int mixTime;
   final int magnetTime;
   final int volume;
-  final String mixSpeed;
-  final String blowSpeed;
   final int blowTime;
-  final int needleSpeed;
+  final int speed;
 
   Step({
     this.id,
@@ -22,10 +20,8 @@ class Step {
     this.mixTime = 0,
     this.magnetTime = 0,
     this.volume = 0,
-    this.mixSpeed = '中速',
-    this.blowSpeed = '中速',
     this.blowTime = 0,
-    this.needleSpeed = 5,
+    this.speed = 5,
   });
 
   Map<String, dynamic> toMap() {
@@ -38,10 +34,8 @@ class Step {
       'mix_time': mixTime,
       'magnet_time': magnetTime,
       'volume': volume,
-      'mix_speed': mixSpeed,
-      'blow_speed': blowSpeed,
       'blow_time': blowTime,
-      'needle_speed': needleSpeed,
+      'speed': speed,
     };
   }
 
@@ -55,10 +49,8 @@ class Step {
       mixTime: map['mix_time'] as int? ?? 0,
       magnetTime: map['magnet_time'] as int? ?? 0,
       volume: map['volume'] as int? ?? 0,
-      mixSpeed: map['mix_speed'] as String? ?? '中速',
-      blowSpeed: map['blow_speed'] as String? ?? '中速',
       blowTime: map['blow_time'] as int? ?? 0,
-      needleSpeed: map['needle_speed'] as int? ?? 5,
+      speed: map['speed'] as int? ?? 5,
     );
   }
 
@@ -71,10 +63,8 @@ class Step {
     int? mixTime,
     int? magnetTime,
     int? volume,
-    String? mixSpeed,
-    String? blowSpeed,
     int? blowTime,
-    int? needleSpeed,
+    int? speed,
   }) {
     return Step(
       id: id ?? this.id,
@@ -85,10 +75,8 @@ class Step {
       mixTime: mixTime ?? this.mixTime,
       magnetTime: magnetTime ?? this.magnetTime,
       volume: volume ?? this.volume,
-      mixSpeed: mixSpeed ?? this.mixSpeed,
-      blowSpeed: blowSpeed ?? this.blowSpeed,
       blowTime: blowTime ?? this.blowTime,
-      needleSpeed: needleSpeed ?? this.needleSpeed,
+      speed: speed ?? this.speed,
     );
   }
-}
+}