fix: 修复assets在example app中不能使用的问题 & 加入maven local的链接，修复flutter无法打包 aar的问题

lib/widgets/rotating_image.dart

@@ -5,11 +5,14 @@ class RotatingImage extends StatefulWidget {
   final double size;
   final Duration duration;
 
+  final String? package; // 添加这个参数
+
   const RotatingImage({
     Key? key,
     required this.imagePath,
     this.size = 20,
-    this.duration = const Duration(seconds: 3)
+    this.duration = const Duration(seconds: 3),
+    this.package = 'ai_chat_assistant', // 默认值
   }) : super(key: key);
 
   @override
@@ -42,7 +45,8 @@ class _RotatingImageState extends State<RotatingImage>
       child: Image.asset(
         widget.imagePath,
         width: widget.size,
-        height: widget.size
+        height: widget.size,
+        package: widget.package, // 使用传入的package参数
       ),
     );
   }