refactor: 拆分主页与公共组件，扫码登录改走 WinHTTP

- 抽出 lib/core 的日期/JSON 工具，收敛各页重复解析
- 主页与音乐风险页拆成组件，风险功能共用一套运行框架
- 修复设置页作为主页页签保存时弹掉根路由导致的黑屏
- 登录对齐 Astral aimedb 协议：84 位二维码校验、签名与请求头修正，
  补 GlobalSign 中间证书；Windows 改用 WinHTTP 绕过服务端对
  BoringSSL 的 TLS 指纹拦截（证书校验保持开启）
- 补开发预览数据与测试

lib/config/strings.dart

@@ -12,7 +12,7 @@ class AppStrings {
   // Login
   static const appTitle = 'Ichino';
   static const qrCodeToken = 'QR Code 令牌';
-  static const qrHint = '粘贴二维码解析内容... / 粘贴连接信息';
+  static const qrHint = '粘贴二维码解析内容或二维码链接... / 粘贴连接信息';
   static const uploadQR = '上传二维码';
   static const login = '登录';
   static const loggingIn = '登录中...';
@@ -21,7 +21,7 @@ class AppStrings {
   static const qrScanError = '解析失败';
   static const forcePreviewApi = '强制使用 Preview API';
   static const loginFailed = '登录失败';
-  static const qrTokenUnrecognized = '没认出 QR 令牌（内容里应当含 SGWCMAID），也可以粘贴「连接信息」。';
+  static const qrTokenUnrecognized = '没认出 QR 令牌';
   static const requestFailed = '请求失败';
   static const settingsTooltip = '设置';
 
@@ -164,6 +164,7 @@ class AppStrings {
   static const authServerSettings = 'Auth Server';
   static const machineSettings = '机器信息';
   static const save = '保存';
+  static const configSaved = '配置已保存';
   static const labelTitleServerUrl = 'Title Server URL';
   static const hintTitleServerUrl = '';
   static const labelAesKey = 'AES Key';
@@ -185,11 +186,8 @@ class AppStrings {
   static const labelPlaceName = 'Place 名称';
   static const hintPlaceName = 'Place name';
   static const labelKeychipId = 'Keychip ID';
-  static const hintKeychipId = 'ID';
-  static const labelAimeUrl = 'Aime URL';
-  static const hintAimeUrl = '';
-  static const labelAimeSalt = 'Aime Salt';
-  static const hintAimeSalt = 'API Key 派生用 Salt';
+  static const helpKeychipId =
+      '机台完整 Keychip（如 A63E-01C30471007）；只填 11 位短值时按 Place ID 补全';
   static String fieldRequired(String label) => '$label 不能为空';
 
   // Config Export/Import

lib/config/title_server_config.dart

@@ -14,9 +14,6 @@ class TitleServerConfig {
   final String regionName;
   final String placeName;
   final String keychipId;
-  final String aimeUrl;
-  final String aimeSalt;
-  final String openGameID;
 
   const TitleServerConfig({
     required this.titleServerUrl,
@@ -30,14 +27,21 @@ class TitleServerConfig {
     this.regionName = '',
     this.placeName = '',
     this.keychipId = '',
-    this.aimeUrl = '',
-    this.aimeSalt = '',
-    String? openGameID,
-  }) : openGameID = openGameID ?? 'MAID';
+  });
 
   List<int> get aesKeyBytes => utf8.encode(aesKey);
   List<int> get aesIvBytes => utf8.encode(aesIv);
 
+  /// 扫码登录签的是**完整 Keychip**（`A63E-01C30471007`），游戏服务器那边才用
+  /// 11 位短值。这里按 Astral 的约定补出完整形式：前 4 位 + 连字符 + 余下 + placeId，
+  /// 所以只填了短值也能还原；填不满 11 位就当没配。
+  String get fullKeychipId {
+    final raw = keychipId.replaceAll(RegExp(r'[\s\-]'), '').toUpperCase();
+    if (raw.length < 11) return '';
+    final short = '${raw.substring(0, 4)}-${raw.substring(4)}';
+    return raw.length == 11 ? '$short$placeId' : short;
+  }
+
   Map<String, dynamic> toJson() => {
         'titleServerUrl': titleServerUrl,
         'aesKey': aesKey,
@@ -50,9 +54,6 @@ class TitleServerConfig {
         'regionName': regionName,
         'placeName': placeName,
         'keychipId': keychipId,
-        'aimeUrl': aimeUrl,
-        'aimeSalt': aimeSalt,
-        'openGameID': openGameID,
       };
 
   factory TitleServerConfig.fromJson(Map<String, dynamic> json) {
@@ -68,9 +69,6 @@ class TitleServerConfig {
       regionName: json['regionName'] as String? ?? '',
       placeName: json['placeName'] as String? ?? '',
       keychipId: json['keychipId'] as String? ?? '',
-      aimeUrl: json['aimeUrl'] as String? ?? '',
-      aimeSalt: json['aimeSalt'] as String? ?? '',
-      openGameID: json['openGameID'] as String? ?? 'MAID',
     );
   }
 }