feat: 多码凑箱已完成装箱时支持跳转箱号查看 & 统一按键识别

- 多码凑箱模式下，扫描已完成装箱的总排号时显示可点击警告横幅，
  点击或按P4键可跳转到该总排号所在箱号查看装箱信息
- 统一所有页面按键处理为 LogicalKeyboardKey 命名常量形式，
  移除 _androidKeyCodeFromLogicalKey 回退路径

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/pages/registration_page.dart

@@ -20,8 +20,6 @@ class RegistrationPage extends StatefulWidget {
 }
 
 class _RegistrationPageState extends State<RegistrationPage> {
-  static const _androidKeyCodeButtonR1 = 103;
-
   final _scannerService = ScannerService();
   final _apiService = ApiService();
   final _feedbackService = FeedbackService();
@@ -101,17 +99,7 @@ class _RegistrationPageState extends State<RegistrationPage> {
   bool _isLockToggleKey(KeyEvent event) {
     final key = event.logicalKey;
     return key == LogicalKeyboardKey.select ||
-        key == LogicalKeyboardKey.gameButtonRight1 ||
-        _androidKeyCodeFromLogicalKey(key) == _androidKeyCodeButtonR1;
-  }
-
-  int? _androidKeyCodeFromLogicalKey(LogicalKeyboardKey key) {
-    final keyId = key.keyId;
-    const androidPlane = LogicalKeyboardKey.androidPlane;
-    if (keyId >= androidPlane && keyId < androidPlane + 0x100000000) {
-      return keyId - androidPlane;
-    }
-    return null;
+        key == LogicalKeyboardKey.gameButtonRight1;
   }
 
   void _onScan(ScanResult result) {
@@ -676,13 +664,9 @@ class _RegistrationPageState extends State<RegistrationPage> {
             focusNode: dialogFocus,
             onKeyEvent: (event) {
               if (event is! KeyDownEvent) return;
-              final androidKey =
-                  _androidKeyCodeFromLogicalKey(event.logicalKey);
-              if (event.logicalKey == LogicalKeyboardKey.arrowUp ||
-                  androidKey == 19) {
+              if (event.logicalKey == LogicalKeyboardKey.arrowUp) {
                 setDialogState(() => selectedIndex = 0);
-              } else if (event.logicalKey == LogicalKeyboardKey.arrowDown ||
-                  androidKey == 20) {
+              } else if (event.logicalKey == LogicalKeyboardKey.arrowDown) {
                 setDialogState(() => selectedIndex = 1);
               } else if (event.logicalKey == LogicalKeyboardKey.enter) {
                 selectedIndex == 0 ? dismissAsNo() : confirmSwitch();