feat(chat): 更新聊天页面婚姻信息展示逻辑

- 根据性别代码动态显示男性或女性图标
- 优化图片画廊布局，固定显示4张图片
- 添加空图片占位符以保持布局一致性
- 在婚姻数据模型中新增性别代码字段
- 更新婚姻数据构造函数和JSON解析逻辑
- 从用户信息映射中添加性别代码转换

lib/model/home/marriage_data.dart

@@ -18,6 +18,7 @@ class MarriageData {
   final String districtName;
   final String describeInfo;
   final String createTime;
+  final int genderCode;
   final List<PhotoItem> photoList;
   
   // 为了兼容UI展示，添加一些计算属性
@@ -45,6 +46,7 @@ class MarriageData {
     required this.describeInfo,
     required this.createTime,
     required this.photoList,
+    required this.genderCode,
   });
   
   factory MarriageData.fromJson(Map<String, dynamic> json) {
@@ -65,6 +67,7 @@ class MarriageData {
       districtName: json['districtName'] ?? '',
       describeInfo: json['describeInfo'] ?? '',
       createTime: json['createTime'] ?? '',
+      genderCode: json['genderCode'] ?? 0,
       photoList: (json['photoList'] as List<dynamic>?)?.map((e) => PhotoItem.fromJson(e as Map<String, dynamic>)).toList() ?? [],
     );
   }
@@ -88,6 +91,7 @@ class MarriageData {
       districtName: userInfo.districtName ?? '',
       describeInfo: userInfo.describeInfo ?? '',
       createTime: userInfo.createTime ?? '',
+      genderCode: userInfo.genderCode?.toInt() ?? 0,
       photoList: (userInfo.photoList ?? []).map((photo) => PhotoItem(
         photoUrl: photo.photoUrl ?? '',
         auditStatus: photo.auditStatus,

lib/pages/message/chat_page.dart

@@ -323,7 +323,6 @@ class _ChatPageState extends State<ChatPage> {
     if (marriageData == null) {
       return SizedBox.shrink();
     }
-    
     return IntrinsicHeight(
       child: GestureDetector(
         onTap: () {
@@ -452,7 +451,7 @@ class _ChatPageState extends State<ChatPage> {
                                     children: [
                                       // 性别图标（根据实际数据调整，这里暂时默认显示女性图标）
                                       Image.asset(
-                                        Assets.imagesFemale,
+                                        marriageData.genderCode == 0 ? Assets.imagesMale : Assets.imagesFemale,
                                         width: 14.w,
                                         height: 14.w,
                                       ),
@@ -510,11 +509,24 @@ class _ChatPageState extends State<ChatPage> {
                           ),
                         if (marriageData.photoList.isNotEmpty) ...[
                           SizedBox(height: 8.h), // 图片上方间距
-                          // 图片画廊（正方形）
+                          // 图片画廊（正方形）- 固定4张的布局
                           Row(
-                            children: marriageData.photoList.take(4).toList().asMap().entries.map((entry) {
-                              final index = entry.key;
-                              final photo = entry.value;
+                            children: List.generate(4, (index) {
+                              // 如果索引超出照片列表长度，返回空容器
+                              if (index >= marriageData.photoList.length) {
+                                return Expanded(
+                                  child: AspectRatio(
+                                    aspectRatio: 1, // 设置为正方形
+                                    child: Container(
+                                      margin: EdgeInsets.only(
+                                        right: index < 3 ? 8.w : 0,
+                                      ),
+                                    ),
+                                  ),
+                                );
+                              }
+                              
+                              final photo = marriageData.photoList[index];
                               final photoUrl = photo.photoUrl.trim().replaceAll('`', ''); // 移除URL中的反引号
                               return Expanded(
                                 child: AspectRatio(
@@ -537,7 +549,7 @@ class _ChatPageState extends State<ChatPage> {
                                   ),
                                 ),
                               );
-                            }).toList(),
+                            }),
                           ),
                           SizedBox(height: 4.h), // 图片下方间距
                         ],