feat: 旅行伙伴发放与编组、修复退登卡死、优化宽屏布局、加 CI

自动退出登录卡死：_performLogoutAndExit 只 pop() 一层，而解锁/收藏品页是 push
在 HomePage 之上的，退登后被弹回「风险」hub，同时 _loggingOut 仍为 true，
PopScope(canPop:false) + 返回键转圈形成死局。改为 popUntil(isFirst)。

旅行伙伴发不了：它是 ItemKind.Character = 9，与搭档 Partner = 10 是两种东西，
原先收藏品的类型列表 [1,2,3,10,11,12] 里根本没有 9。按客户端实现，角色不走
userItemList(ExportUserItems 不导出 itemKind 9)，而是
upsertUserAll.userCharacterList 的 {characterId, level, awakening, useCount}，
配 isNewCharacterList 一行一字符。新增发放与 5 槽 charaSlot 编组页，
含「把槽 0 复制到其他槽位」，并校验所选角色确为已拥有或本次待发放。

宽屏布局：各页只有 ConstrainedBox 限宽、没有居中容器，1440 窗口下内容贴左、
右侧大片空白。抽出 responsiveBody 统一居中；B50 预览改用按宽度适配
(InteractiveViewer constrained:false + FittedBox fitWidth)，横屏下不再被
contain 缩成中间一小块，导出仍是原始 1762x1850。

CI：.github/workflows/build.yml 先跑 analyze+test 作为门槛，再产出
Windows exe、Android apk、iOS 未签名 ipa(macOS runner，无证书故不可安装)。
README 从 Flutter 模板改写为实际文档，含 path_provider/jni 与 JBR jlink
两个构建环境坑的说明。

test/best50_poster_test.dart

@@ -128,8 +128,9 @@ void main() {
               children: [
                 Expanded(
                   child: InteractiveViewer(
+                    constrained: false,
                     child: FittedBox(
-                      fit: BoxFit.contain,
+                      fit: BoxFit.fitWidth,
                       child: Best50Poster(
                         userName: 'Test Player',
                         iconId: 0,

test/music_risk_list_test.dart

@@ -0,0 +1,120 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ichino/config/strings.dart';
+import 'package:ichino/config/title_server_config.dart';
+import 'package:ichino/pages/music_risk_feature_view.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+Future<void> _seedConfig() async {
+  SharedPreferences.setMockInitialValues({});
+  await TitleServerConfigHolder().update(
+    const TitleServerConfig(
+      titleServerUrl: 'http://127.0.0.1:9999',
+      aesKey: '0123456789abcdef',
+      aesIv: '0123456789abcdef',
+      clientId: 'A63E01C2805',
+    ),
+  );
+}
+
+Future<void> _pumpView(WidgetTester tester, MusicRiskFeatureMode mode) async {
+  await _seedConfig();
+  await tester.pumpWidget(
+    MaterialApp(
+      home: Scaffold(
+        body: MusicRiskFeatureView(
+          userId: 123,
+          cookies: 'JSESSIONID=X',
+          loginDateTime: 1,
+          loginId: 2,
+          mode: mode,
+          featureTitle: 't',
+          featureDesc: 'd',
+          onExitToTitle: () async {},
+        ),
+      ),
+    ),
+  );
+  await tester.pump();
+}
+
+Future<void> _addById(WidgetTester tester, String label, String id) async {
+  await tester.enterText(find.widgetWithText(TextField, label), id);
+  await tester.tap(find.text(AppStrings.listAddButton).first);
+  await tester.pump();
+}
+
+void main() {
+  setUp(() => addTearDown(TitleServerConfigHolder().clear));
+
+  testWidgets('收藏品列表可累加多行并可移除', (tester) async {
+    await _pumpView(tester, MusicRiskFeatureMode.collectibles);
+
+    expect(find.textContaining(AppStrings.collectiblesPendingEmpty), findsOne);
+
+    await _addById(tester, AppStrings.collectiblesItemIdLabel, '250103');
+    await _addById(tester, AppStrings.collectiblesItemIdLabel, '30021');
+
+    expect(find.textContaining('#250103'), findsOneWidget);
+    expect(find.textContaining('#30021'), findsOneWidget);
+    expect(
+      find.textContaining('${AppStrings.collectiblesPendingTitle} (2)'),
+      findsOneWidget,
+    );
+
+    // 同一类型同一 ID 不应重复入列。
+    await _addById(tester, AppStrings.collectiblesItemIdLabel, '30021');
+    expect(
+      find.textContaining('${AppStrings.collectiblesPendingTitle} (2)'),
+      findsOneWidget,
+    );
+
+    await tester.tap(find.byTooltip(AppStrings.listRemoveTooltip).first);
+    await tester.pump();
+    expect(find.textContaining('#250103'), findsNothing);
+    expect(
+      find.textContaining('${AppStrings.collectiblesPendingTitle} (1)'),
+      findsOneWidget,
+    );
+  });
+
+  testWidgets('解锁列表按勾选展开难度且添加后清空输入', (tester) async {
+    await _pumpView(tester, MusicRiskFeatureMode.unlockMusic);
+
+    await tester.enterText(
+      find.widgetWithText(TextField, AppStrings.unlockMusicIdLabel),
+      '834',
+    );
+    await tester.tap(find.text(AppStrings.unlockMusicOption).first);
+    await tester.tap(find.text(AppStrings.unlockMasterOption).first);
+    await tester.pump();
+    await tester.tap(find.text(AppStrings.listAddButton).first);
+    await tester.pump();
+
+    final row = find.textContaining('#834');
+    expect(row, findsOneWidget);
+    expect(tester.widget<Text>(row.first).data, contains('Master'));
+    // 添加后输入与勾选应被清空，方便连续添加下一条。
+    expect(
+      tester.widget<TextField>(
+        find.widgetWithText(TextField, AppStrings.unlockMusicIdLabel),
+      ).controller!.text,
+      isEmpty,
+    );
+  });
+
+  testWidgets('自动退出登录并返回标题页默认勾选', (tester) async {
+    await _pumpView(tester, MusicRiskFeatureMode.collectibles);
+
+    expect(
+      find.text(AppStrings.autoLogoutAndExit),
+      findsOneWidget,
+    );
+    // 未勾选任何解锁项时，唯一处于选中态的复选框就是自动退登。
+    final checked = tester
+        .widgetList<Checkbox>(find.byType(Checkbox))
+        .where((c) => c.value == true)
+        .toList();
+    expect(checked, hasLength(1));
+  });
+}

test/travel_partner_page_test.dart

@@ -0,0 +1,77 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ichino/config/strings.dart';
+import 'package:ichino/config/title_server_config.dart';
+import 'package:ichino/pages/travel_partner_page.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+Future<void> _pumpPage(WidgetTester tester, {required bool loggedIn}) async {
+  SharedPreferences.setMockInitialValues({});
+  await TitleServerConfigHolder().update(
+    const TitleServerConfig(
+      titleServerUrl: 'http://127.0.0.1:9999',
+      aesKey: '0123456789abcdef',
+      aesIv: '0123456789abcdef',
+      clientId: 'A63E01C2805',
+    ),
+  );
+
+  tester.view.physicalSize = loggedIn ? const Size(420, 1500) : const Size(1440, 900);
+  tester.view.devicePixelRatio = 1.0;
+  addTearDown(tester.view.reset);
+
+  await tester.pumpWidget(
+    MaterialApp(
+      home: TravelPartnerPage(
+        userId: 42,
+        cookies: 'JSESSIONID=X',
+        loginDateTime: loggedIn ? 1 : null,
+        loginId: loggedIn ? 7 : null,
+        onExitToTitle: () async {},
+      ),
+    ),
+  );
+  await tester.pump();
+}
+
+void main() {
+  testWidgets('已登录时渲染 5 个槽位与一键复制，且无溢出', (tester) async {
+    await _pumpPage(tester, loggedIn: true);
+
+    expect(tester.takeException(), isNull);
+    for (var i = 0; i < 5; i++) {
+      expect(
+        find.text(AppStrings.travelPartnerSlotLabel(i)),
+        findsOneWidget,
+        reason: '缺少槽位 $i 的下拉框',
+      );
+    }
+    expect(find.text(AppStrings.travelPartnerCopySlot0), findsOneWidget);
+    expect(find.text(AppStrings.travelPartnerGrantTitle), findsOneWidget);
+  });
+
+  testWidgets('未登录时给出提示并禁用执行', (tester) async {
+    await _pumpPage(tester, loggedIn: false);
+
+    expect(tester.takeException(), isNull);
+    expect(find.text(AppStrings.travelPartnerNotLoggedIn), findsOneWidget);
+
+    final run = tester.widget<FilledButton>(
+      find.ancestor(
+        of: find.text(AppStrings.travelPartnerRun),
+        matching: find.byType(FilledButton),
+      ),
+    );
+    expect(run.onPressed, isNull);
+  });
+
+  testWidgets('槽 0 未选择时复制按钮不改动槽位', (tester) async {
+    await _pumpPage(tester, loggedIn: true);
+
+    await tester.tap(find.text(AppStrings.travelPartnerCopySlot0));
+    await tester.pump();
+
+    // 未拥有任何角色时，复制应被拦下并提示，而不是写入非法槽位。
+    expect(find.text(AppStrings.travelPartnerCopyNeedSlot0), findsOneWidget);
+  });
+}

test/user_all_patch_test.dart

@@ -0,0 +1,116 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ichino/config/title_server_config.dart';
+import 'package:ichino/models/user_character.dart';
+import 'package:ichino/services/user_all_payload_builder.dart';
+
+const _config = TitleServerConfig(
+  titleServerUrl: 'http://127.0.0.1:9999',
+  aesKey: '0123456789abcdef',
+  aesIv: '0123456789abcdef',
+  clientId: 'A63E01C2805',
+);
+
+Map<String, dynamic> _buildPacket(UserAllPayloadBuilder builder) =>
+    builder.build(
+      userId: 42,
+      loginId: 7,
+      loginDateTime: 1700000000,
+      musicData: const {
+        'musicId': 11538,
+        'level': 0,
+        'playCount': 1,
+        'achievement': 0,
+        'comboStatus': 0,
+        'syncStatus': 0,
+        'deluxscoreMax': 0,
+        'scoreRank': 0,
+        'extNum1': 0,
+      },
+      generalUserInfo: const {},
+    );
+
+Map<String, dynamic> _upsert(Map<String, dynamic> packet) =>
+    packet['upsertUserAll'] as Map<String, dynamic>;
+
+void main() {
+  group('旅行伙伴 userCharacterList patch', () {
+    test('写入 4 字段行并按行数生成 isNewCharacterList', () {
+      final builder = UserAllPayloadBuilder(_config);
+      final packet = _buildPacket(builder);
+
+      builder.applyCharacterListPatch(packet, characters: [
+        {'characterId': 1001, 'level': 1, 'awakening': 0, 'useCount': 0},
+        {'characterId': 1002, 'level': 3, 'awakening': 1, 'useCount': 9},
+      ]);
+
+      final upsert = _upsert(packet);
+      expect(upsert['userCharacterList'], hasLength(2));
+      expect(upsert['isNewCharacterList'], '11');
+      final first = (upsert['userCharacterList'] as List).first
+          as Map<String, dynamic>;
+      // 客户端 UserCharacter 结构只有这 4 个字段，多一个都可能被拒。
+      expect(first.keys.toSet(), {
+        'characterId',
+        'level',
+        'awakening',
+        'useCount',
+      });
+    });
+
+    test('空列表时 isNewCharacterList 为空串', () {
+      final builder = UserAllPayloadBuilder(_config);
+      final packet = _buildPacket(builder);
+      builder.applyCharacterListPatch(packet, characters: []);
+      expect(_upsert(packet)['isNewCharacterList'], '');
+    });
+  });
+
+  group('charaSlot 编组 patch', () {
+    test('槽位补齐到 5 并同步 playlog 的 characterId1..5', () {
+      final builder = UserAllPayloadBuilder(_config);
+      final packet = _buildPacket(builder);
+
+      builder.applyCharaSlotPatch(packet, charaSlot: const [1001]);
+
+      final userData = (_upsert(packet)['userData'] as List).first
+          as Map<String, dynamic>;
+      expect(userData['charaSlot'], [1001, 0, 0, 0, 0]);
+
+      final playlog = (packet['userPlaylogList'] as List).first
+          as Map<String, dynamic>;
+      expect(playlog['characterId1'], 1001);
+      expect(playlog['characterId2'], 0);
+    });
+
+    test('超过 5 个槽位被截断', () {
+      expect(
+        normalizeCharaSlot(const [1, 2, 3, 4, 5, 6, 7]),
+        [1, 2, 3, 4, 5],
+      );
+    });
+
+    test('一键复制槽 0 到其余槽位', () {
+      final slots = normalizeCharaSlot(const [1001, 0, 0, 0, 0]);
+      final copied = normalizeCharaSlot([
+        for (var i = 0; i < 5; i++) slots[0],
+      ]);
+      expect(copied, [1001, 1001, 1001, 1001, 1001]);
+    });
+  });
+
+  group('收藏品 userItemList patch', () {
+    test('多行道具与 isNewItemList 位数一致', () {
+      final builder = UserAllPayloadBuilder(_config);
+      final packet = _buildPacket(builder);
+
+      builder.applyItemListPatch(packet, items: [
+        {'itemKind': 9, 'itemId': 1001, 'stock': 1, 'isValid': true},
+        {'itemKind': 10, 'itemId': 2002, 'stock': 1, 'isValid': true},
+      ]);
+
+      final upsert = _upsert(packet);
+      expect(upsert['userItemList'], hasLength(2));
+      expect(upsert['isNewItemList'], '11');
+    });
+  });
+}