feat(ui): 更新品牌启动页与选集交互

lib/pages/splash/splash_page.dart

@@ -0,0 +1,53 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+
+import '../../core/theme/app_colors.dart';
+
+const double _markSize = 84;
+const double _markRadius = 18;
+const double _loaderSize = 22;
+const double _loaderStroke = 2.5;
+const String _markAsset = 'assets/icon/splash_mark.png';
+
+/// 系统开屏已经放好同一块底和图标。这一页接上加载，直到首页数据回来。
+class SplashPage extends StatelessWidget {
+  const SplashPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return ColoredBox(
+      key: Key('splash-screen'),
+      color: AppColors.ink,
+      child: Stack(
+        fit: StackFit.expand,
+        children: [
+          Center(
+            child: ClipRRect(
+              borderRadius: BorderRadius.circular(_markRadius),
+              child: const Image(
+                image: AssetImage(_markAsset),
+                width: _markSize,
+                height: _markSize,
+                filterQuality: FilterQuality.medium,
+                gaplessPlayback: true,
+              ),
+            ),
+          ),
+          Align(
+            alignment: Alignment(0, 0.24),
+            child: SizedBox(
+              width: _loaderSize,
+              height: _loaderSize,
+              child: CircularProgressIndicator(
+                key: Key('splash-loading'),
+                strokeWidth: _loaderStroke,
+                color: AppColors.gold,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}