feat(message): 实现聊天页面基础UI与输入栏组件

-组件ChatInputBar 添加聊天输入栏
- 重构聊天页面布局，使用Column替代Container
- 设置聊天背景色为#F5F5F5
- 添加消息列表展示区域，包含头像与消息气泡
- 实现消息时间戳展示
- 添加IM管理器用户信息获取方法
- 优化ChatPage构造函数为常量构造函数
- 导入聊天输入栏组件文件

lib/im/im_manager.dart

@@ -228,6 +228,12 @@ class IMManager {
     return cursor.data;
   }
 
+  /// 获取用户信息
+  Future<EMUserInfo?> getUserInfo(String userId) async {
+    var data = await EMClient.getInstance.userInfoManager.fetchUserInfoById([userId]);
+    return data[userId];
+  }
+
   /// 清理资源
   void dispose() {
     try {

lib/pages/message/chat_page.dart

@@ -4,12 +4,13 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:get/get.dart';
 
 import '../../generated/assets.dart';
+import '../../../widget/message/chat_input_bar.dart';
 
 class ChatPage extends StatefulWidget {
 
-  String userId;
+  final String userId;
 
-  ChatPage({required this.userId, super.key});
+  const ChatPage({required this.userId, super.key});
 
   @override
   State<ChatPage> createState() => _ChatPageState();
@@ -19,6 +20,7 @@ class _ChatPageState extends State<ChatPage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      backgroundColor: Color(0xffF5F5F5),
       appBar: AppBar(
         title: Text("Chat"),
         centerTitle: true,
@@ -37,8 +39,78 @@ class _ChatPageState extends State<ChatPage> {
           },
         ),
       ),
-      body: Container(
-
+      body: Column(
+        children: [
+          // 消息列表区域
+          Expanded(
+            child: SingleChildScrollView(
+              reverse: true,
+              padding: EdgeInsets.all(16.w),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // 时间戳
+                  Text(
+                    "昨天下午14:46",
+                    style: TextStyle(
+                      fontSize: 12.sp,
+                      color: Colors.grey,
+                    ),
+                    textAlign: TextAlign.center,
+                  ),
+                  SizedBox(height: 16.h),
+                  // 消息项
+                  Row(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      // 头像
+                      Container(
+                        width: 40.w,
+                        height: 40.w,
+                        decoration: BoxDecoration(
+                          borderRadius: BorderRadius.circular(20.w),
+                          image: DecorationImage(
+                            image: AssetImage(Assets.imagesAvatarsExample),
+                            fit: BoxFit.cover,
+                          ),
+                        ),
+                      ),
+                      SizedBox(width: 8.w),
+                      // 消息气泡
+                      Container(
+                        padding: EdgeInsets.symmetric(horizontal: 12.w, vertical: 8.h),
+                        decoration: BoxDecoration(
+                          color: Colors.white,
+                          borderRadius: BorderRadius.only(
+                            topRight: Radius.circular(12.w),
+                            bottomLeft: Radius.circular(12.w),
+                            bottomRight: Radius.circular(12.w),
+                          ),
+                        ),
+                        child: Text(
+                          "你好",
+                          style: TextStyle(
+                            fontSize: 14.sp,
+                            color: Colors.black,
+                          ),
+                        ),
+                  ),
+                ],
+              ),
+                ],
+              ),
+            ),
+          ),
+          // 使用抽离的聊天输入栏组件
+          ChatInputBar(
+            onSendMessage: (message) {
+              // 处理发送消息
+              if (Get.isLogEnable) {
+                Get.log("接收到消息: $message");
+              }
+            },
+          ),
+        ],
       ),
     );
   }