/**
     * Creates a new S3StorageClient instance.
     *
     * @param endpoint the S3 endpoint URL (null for AWS default)
     * @param accessKey the AWS access key
     * @param secretKey the AWS secret key
     * @param bucket the bucket name
     * @param region the AWS region
     */
    public S3StorageClient(final String endpoint, final String accessKey, final String secretKey, final String bucket,

     * @return detected storage type
     */
    public static StorageType detectStorageType(final String endpoint) {
        if (StringUtil.isBlank(endpoint)) {
            // Default to S3 if no endpoint (uses AWS default)
            return StorageType.S3;
        }

        final String lowerEndpoint = endpoint.toLowerCase(Locale.ROOT);

        // GCS patterns

                                            <la:checkbox styleId="resetDictionaries" styleClass="form-check-input" property="resetDictionaries" disabled="${fesenType=='cloud' or fesenType=='aws'}"/>
                                            <label for="resetDictionaries" class="form-check-label">
                                                <la:message key="labels.enabled"/>

     * Storage type for cloud storage (s3, gcs, auto).
     * Determines which storage client to use.
     */
    @Size(max = 20)
    public String storageType;

    /**
     * Storage region for S3.
     * AWS region where the S3 bucket is located.
     */
    @Size(max = 100)
    public String storageRegion;

    /**
     * GCS project ID.
     * Google Cloud project ID for GCS storage.
     */

    // ============================================================

    /** Cloud-based search engine type. */
    public static final String FESEN_TYPE_CLOUD = "cloud";

    /** AWS-based search engine type. */
    public static final String FESEN_TYPE_AWS = "aws";

    /** Search engine username configuration key. */
    public static final String FESEN_USERNAME = "fesen.username";

    /** Search engine password configuration key. */

							<p><la:message key="labels.menu_design" /></p>
						</a></li></c:if>
						
					<c:if test="${fe:permission('admin-dict-view') and fesenType!='cloud' and fesenType!='aws'}">
					<li class="nav-item">
						<a href="${fe:url('/admin/dict/')}" class="nav-link <c:if test="${param.menuType=='dict'}">active</c:if>" <c:if test="${param.menuType=='dict'}">aria-current="page"</c:if>>

                                        </div>
                                    </div>
                                </div>
                                <c:if test="${fesenType!='cloud' and fesenType!='aws'}">
                                <div class="form-group row">
                                    <span class="font-weight-bold col-sm-3 text-sm-right col-form-label"><la:message