fix(ais): AIS WebClient 버퍼 제한 초과(DataBufferLimitException) 수정

src/main/java/com/snp/batch/global/config/MaritimeApiWebClientConfig.java

@@ -84,12 +84,17 @@ public class MaritimeApiWebClientConfig {
         log.info("Base URL: {}", maritimeAisApiUrl);
         log.info("========================================");
 
+        HttpClient httpClient = HttpClient.create()
+                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10_000) // 연결 타임아웃 10초
+                .responseTimeout(Duration.ofSeconds(60));             // 응답 대기 60초
+
         return WebClient.builder()
+                .clientConnector(new ReactorClientHttpConnector(httpClient))
                 .baseUrl(maritimeAisApiUrl)
                 .defaultHeaders(headers -> headers.setBasicAuth(maritimeApiUsername, maritimeApiPassword))
                 .codecs(configurer -> configurer
                         .defaultCodecs()
-                        .maxInMemorySize(50 * 1024 * 1024)) // 50MB 버퍼 (AIS GetTargets 응답 ~20MB+)
+                        .maxInMemorySize(100 * 1024 * 1024)) // 100MB 버퍼
                 .build();
     }