| `SystemHelper` | `org.codelibs.fess.helper` | UI language dropdown builder |
| `FessUserLocaleProcessProvider` | `org.codelibs.fess.mylasta.direction.sponsor` | User locale detection |

## Language Detection and Selection

### User Interface Language

Fess determines the UI language in this order:

1. **Query parameter**: `?browser_lang=[locale]` (highest priority)

<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
  <ShortName>Fess</ShortName>
  <Description>Full Text Search for Your Documents.</Description>
  <Tags>Full Text Search</Tags>
  <Contact>fess-user@lists.sourceforge.jp</Contact>
  <SearchForm>http://localhost:8080/fess/</SearchForm>
  <Url type="text/html" template="http://localhost:8080/fess/search?q={searchTerms}"/>
  <InputEncoding>UTF-8</InputEncoding>

        boolQueryBuilder.mustNot(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()));
        boolQueryBuilder.mustNot(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.USER.toString()));

        SuggestUtil.deleteByQuery(ComponentUtil.getSearchEngineClient(), suggester.settings(), suggester.getIndex(), boolQueryBuilder);
    }

    /**
     * Purges old suggest data from search logs.

            String user = "system";

            final ScheduledJob job = getCurrentScheduledJob();
            if (job != null) {
                source = "scheduler:" + job.getName();
                if (job.getCreatedBy() != null) {
                    user = job.getCreatedBy();
                }
            } else {
                try {
                    user = ComponentUtil.getSystemHelper().getUsername();

            throw new LlmException("LLM client is not available");
        }
        return client;
    }

    // RAG workflow delegation methods

    /**
     * Detects the intent of a user message using the configured LLM client.
     *
     * @param userMessage the user's message
     * @return the detected intent with extracted keywords
     * @throws LlmException if LLM is not available
     */

     * with escaped queries if the initial search fails.
     *
     * @param searchRequestParams The search request parameters
     * @param data The search render data to populate with results
     * @param userBean Optional user information for permission checking
     */
    public void search(final SearchRequestParams searchRequestParams, final SearchRenderData data,
            final OptionalThing<FessUserBean> userBean) {

	</c:if>
	<c:if test="${param.menuCategoryType == 'crawl'}">
		<li class="breadcrumb-item"><la:message key="labels.menu_crawl" /></li>
	</c:if>
	<c:if test="${param.menuCategoryType == 'user'}">
		<li class="breadcrumb-item"><la:message key="labels.menu_user" /></li>
	</c:if>
	<c:if test="${param.menuCategoryType == 'suggest'}">
		<li class="breadcrumb-item"><la:message key="labels.menu_suggest" /></li>
	</c:if>

      },
      {
        "documents": {
          "path_match": "documents.*",
          "mapping": {
            "type": "keyword"
          }
        }
      }
    ],
    "properties": {
      "user": {
        "type": "keyword"
      },
      "roles": {
        "type": "keyword"
      },
      "queryId": {
        "type": "keyword"
      },
      "searchWord": {
        "type": "keyword"
      },

 */
public class EditForm extends CreateForm {

    /** Unique identifier for the related query entry */
    @Required
    @Size(max = 1000)
    public String id;

    /** Username of the user who last updated this entry */
    @Size(max = 1000)
    public String updatedBy;

    /** Timestamp when this entry was last updated */
    @ValidateTypeFailure
    public Long updatedTime;

import org.lastaflute.web.ruts.process.ActionRuntime;
import org.lastaflute.web.servlet.request.RequestManager;
import org.lastaflute.web.servlet.request.UserTimeZoneProcessProvider;

/**
 * The provider of user time-zone process.
 *
 * @author jflute
 */
public class FessUserTimeZoneProcessProvider implements UserTimeZoneProcessProvider {

    public static final TimeZone centralTimeZone = TimeZone.getDefault();