feat: 添加日志配置和Logback依赖

refactor: 重构实体类equals和hashCode方法

fix: 修复WebSocketService消息发送逻辑

style: 格式化代码和优化导入

docs: 更新JacksonConfig日期序列化格式

test: 添加CompanyFilePathTableCell测试类

chore: 清理无用代码和注释

client/pom.xml

@@ -73,6 +73,13 @@
             <artifactId>okhttp</artifactId>
             <version>4.12.0</version>
         </dependency>
+        
+        <!-- Logback 日志实现 -->
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.4.14</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>