feat: 更新 App 图标与开屏素材

lib/pages/home/home_view.dart

@@ -2,7 +2,6 @@
 
 import 'dart:async';
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:provider/provider.dart';
@@ -44,10 +43,7 @@ class HomePage extends StatefulWidget {
 }
 
 class _HomePageState extends State<HomePage> with WidgetsBindingObserver {
-  static const _androidSplashAsset = 'assets/icon/splash_logo_android12.png';
-  static const _defaultSplashAsset = 'assets/icon/splash_logo.png';
-  static const _androidSplashSize = 288.0;
-  static const _defaultSplashSize = 384.0;
+  static const _splashAsset = 'assets/icon/splash_logo.png';
 
   bool _resumeRetryInFlight = false;
   HomeFeedController? _homeFeed;
@@ -163,18 +159,15 @@ class _HomePageState extends State<HomePage> with WidgetsBindingObserver {
   }
 
   Widget _startupSplash() {
-    final isAndroid = defaultTargetPlatform == TargetPlatform.android;
-    final size = isAndroid ? _androidSplashSize : _defaultSplashSize;
     return AnnotatedRegion<SystemUiOverlayStyle>(
       value: SystemUiOverlayStyle.light,
       child: ColoredBox(
-        color: AppColors.splashInk,
+        color: AppColors.mediaBlack,
         child: Center(
           child: Image.asset(
-            isAndroid ? _androidSplashAsset : _defaultSplashAsset,
+            _splashAsset,
             key: const Key('startup-splash'),
-            width: size,
-            height: size,
+            width: 200,
             fit: BoxFit.contain,
           ),
         ),