第二次提交

lib/core/protocol/machine_protocol_codec.dart

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+import 'dart:typed_data';
+
+/// 极简化的 Codec：只负责中间那段变化的“负载数据”
+class MachineProtocolCodec {
+  /// 仅封装 0x00 指令的数据部分 (Byte 3 到 Byte 10，共 8 字节)
+  static Uint8List encodeRemoteControlPayload({
+    required int left,
+    required int right,
+    int lift = 0,
+    int mower = 0,
+    int ignition = 0,
+    int emergency = 0,
+  }) {
+    final bd = ByteData(8); // 只分配 8 字节
+    int pos = 0;
+
+    bd.setInt16(pos, left, Endian.little);
+    pos += 2;
+    bd.setInt16(pos, right, Endian.little);
+    pos += 2;
+    bd.setUint8(pos++, lift);
+    bd.setUint8(pos++, mower);
+    bd.setUint8(pos++, ignition);
+    bd.setUint8(pos++, emergency);
+
+    return bd.buffer.asUint8List();
+  }
+}