fix(security): 添加frameOptions配置以增强安全性

添加sameOrigin的frameOptions配置，防止点击劫持攻击

timeline-user-service/src/main/java/com/timeline/user/config/SecurityConfig.java

@@ -14,6 +14,8 @@ public class SecurityConfig {
     public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
         http
                 .csrf(csrf -> csrf.disable())
+                .headers(headers -> headers
+                        .frameOptions(frameOptions -> frameOptions.sameOrigin()))
                 .authorizeHttpRequests(auth -> auth.anyRequest().permitAll());
         return http.build();
     }