Analytics 서비스 CORS 설정 추가

- WebConfig.java 추가하여 CORS 정책 설정
- 프론트엔드에서 Analytics API 호출 시 CORS 에러 해결
- 모든 origin 패턴 허용 및 credentials 지원

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

analytics-service/src/main/java/com/kt/event/analytics/infrastructure/config/WebConfig.java

@@ -0,0 +1,32 @@
+package com.kt.event.analytics.infrastructure.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * Web Configuration
+ * CORS 설정 및 기타 웹 관련 설정
+ *
+ * @author System Architect
+ * @since 2025-10-30
+ */
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    /**
+     * CORS 설정
+     * - 모든 origin 허용 (개발 환경)
+     * - 모든 HTTP 메서드 허용
+     * - Credentials 허용
+     */
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedOriginPatterns("*")
+                .allowedMethods("GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS")
+                .allowedHeaders("*")
+                .allowCredentials(true)
+                .maxAge(3600);
+    }
+}