🎨 Use feature based folder structure

lib/core/tour/techincal_review_intro.dart

@@ -0,0 +1,34 @@
+import 'package:flutter/material.dart';
+import 'package:gap/gap.dart';
+import 'package:island/core/widgets/content/sheet.dart';
+import 'package:styled_widget/styled_widget.dart';
+
+class TechicalReviewIntroWidget extends StatelessWidget {
+  const TechicalReviewIntroWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return SheetScaffold(
+      titleText: '技术性预览',
+      child: SingleChildScrollView(
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Text('👋').fontSize(32),
+            Text('你好呀～').fontSize(24),
+            Text('欢迎来使用 Solar Network 3.0 的技术性预览版。'),
+            const Gap(24),
+            Text('技术性预览的初衷是让我们更顺滑的将 3.0 发布出来，帮助我们一点一点的迁移数据。'),
+            const Gap(24),
+            Text('同时，既然是测试版，肯定有一系列的 Bug 和问题，请多多包涵，也欢迎积极反馈到 GitHub 上。'),
+            Text('目前帐号数据已经迁移完毕，其他数据将在未来逐渐迁移。还请耐心等待，不要重复创建以免未来数据冲突。'),
+            const Gap(24),
+            Text('最后，感谢你愿意参与技术性预览，祝你使用愉快！'),
+            const Gap(16),
+            Text('关掉这个对话框就开始探索吧！').fontSize(11),
+          ],
+        ).padding(horizontal: 20, vertical: 24),
+      ),
+    );
+  }
+}

lib/core/tour/tour.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:island/core/services/tour.dart';
+
+const List<String> kStartTours = ['technical_review_intro'];
+
+class TourTriggerWidget extends HookConsumerWidget {
+  final Widget child;
+  const TourTriggerWidget({super.key, required this.child});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final tourStatus = ref.watch(tourStatusProvider.notifier);
+
+    useEffect(() {
+      Future(() async {
+        for (final tour in kStartTours) {
+          final widget = await tourStatus.showTour(tour);
+          if (widget != null) {
+            if (!context.mounted) return;
+            await showModalBottomSheet(
+              isScrollControlled: true,
+              useRootNavigator: true,
+              context: context,
+              builder: (context) => widget,
+            );
+          }
+        }
+      });
+      return null;
+    }, [tourStatus]);
+
+    return child;
+  }
+}