model_not_found: 'The AI model was not found. Please contact the administrator.',
                invalid_response: 'Received an invalid response from the AI service. Please try again.',
                connection_error: 'Unable to connect to the AI service. Please check the network connection.',
                unknown: 'An error occurred. Please try again.'

                if (value > 0) {
                    return value;
                }
            } catch (final NumberFormatException e) {
                logger.warn("Invalid config value for key={}. Using default: {}", key, defaultValue);
            }
        }
        return defaultValue;
    }

    /**

    /** Document crawler format identifier. */
    public static final String DCF = "dcf";

    /** Constant representing all languages. */
    public static final String ALL_LANGUAGES = "all";

    /** Invalid numeric parameter value. */
    public static final String INVALID_NUMERIC_PARAMETER = "-1";

    // ============================================================
    // Facet and Query Constants

            throw new FessSystemException("configId is null in document. docId: " + docId);
        }
        if (configId.length() < 2) {
            throw new FessSystemException("Invalid configId length: " + configId + ". ConfigId must be at least 2 characters long.");
        }
        final CrawlingConfig config = crawlingConfigHelper.getCrawlingConfig(configId);
        if (config == null) {

# ----------------------------------------------------------
#                                                   Password
#                                                     ------

# List of invalid admin passwords.
password.invalid.admin.passwords=\
admin

# Minimum password length (0 to disable).
password.min.length=8

# Require uppercase letters in password.
password.require.uppercase=false

labels.chat_error_model_not_found=O modelo de IA não foi encontrado. Por favor, entre em contato com o administrador.
labels.chat_error_invalid_response=Resposta inválida recebida do serviço de IA. Por favor, tente novamente.
labels.chat_error_connection=Não foi possível conectar ao serviço de IA. Por favor, verifique a conexão de rede.
labels.chat_sources=Fontes
labels.chat_ai_mode=Modo IA

    public static final String LABELS_contact_site_admin = "{labels.contact_site_admin}";

    /** The key of the message: Invalid Request Format. */
    public static final String LABELS_request_error_title = "{labels.request_error_title}";

    /** The key of the message: Your request to the URL is invalid. */
    public static final String LABELS_bad_request = "{labels.bad_request}";

        assertNotNull(result);
        assertTrue(result.isEmpty());
    }

    @Test
    public void test_parseJson_invalid() {
        final Map<String, Object> result = coordinatorHelper.parseJson("invalid json");
        assertNotNull(result);
        assertTrue(result.isEmpty());
    }

    @Test
    public void test_parseJson_null() {

        }

        return new ChatSearchResult(Collections.emptyList(), null, 0L);
    }

    /**
     * Validates a query and returns an empty result if invalid, or null if validation passed.
     */
    private ChatSearchResult validateQuery(final String query) {
        if (StringUtil.isBlank(query)) {
            return new ChatSearchResult(Collections.emptyList(), null, 0L);

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