使用 assets_util 来管理 assets

lib/screens/main_screen.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import '../widgets/floating_icon.dart';
+import '../utils/assets_util.dart';
 
 class MainScreen extends StatefulWidget {
   const MainScreen({super.key});
@@ -26,9 +27,9 @@ class _MainScreenState extends State<MainScreen> {
       body: Stack(
         children: [
           Container(
-            decoration: const BoxDecoration(
+            decoration: BoxDecoration(
               image: DecorationImage(
-                image: AssetImage('assets/images/bg.jpg', package: 'ai_chat_assistant'),
+                image: AssetsUtil.getImage('bg.jpg'),
                 fit: BoxFit.cover,
               ),
             ),

lib/screens/part_screen.dart

@@ -5,6 +5,7 @@ import '../screens/full_screen.dart';
 import 'package:provider/provider.dart';
 import '../services/message_service.dart';
 import '../widgets/gradient_background.dart';
+import '../utils/assets_util.dart';
 
 class PartScreen extends StatefulWidget {
   final VoidCallback? onHide;
@@ -202,11 +203,10 @@ class _PartScreenState extends State<PartScreen> {
                                         top: 6,
                                         right: 6,
                                         child: IconButton(
-                                          icon: Image.asset(
-                                            'assets/images/open_in_full.png',
+                                          icon: AssetsUtil.getImageWidget(
+                                            'open_in_full.png',
                                             width: 24,
                                             height: 24,
-                                            package: 'ai_chat_assistant',
                                           ),
                                           onPressed: _openFullScreen,
                                           padding: EdgeInsets.zero,