}

    /**
     * Saves error messages to the session.
     * The messages will be displayed to the user on the next page load.
     *
     * @param validationMessagesLambda a lambda function to configure the error messages
     */
    protected void saveError(final VaMessenger<FessMessages> validationMessagesLambda) {
        final FessMessages messages = createMessages();

        final LlmChatRequest request = new LlmChatRequest();
        final List<LlmMessage> messages = new ArrayList<>();
        messages.add(LlmMessage.user("Message 1"));
        messages.add(LlmMessage.assistant("Message 2"));

        request.setMessages(messages);

        assertSame(messages, request.getMessages());
        assertEquals(2, request.getMessages().size());
    }

    @Test

        String message = "LDAP設定エラー: 接続失敗 🚫 ñ é ü ß";
        LdapConfigurationException exception = new LdapConfigurationException(message);

        assertEquals(message, exception.getMessage());
    }

    @Test
    public void test_newlineCharactersInMessage() {
        // Test with newline characters in message

        try {
            userService.changePassword(username, form.newPassword);
            saveInfo(messages -> messages.addSuccessChangedPassword(GLOBAL));
        } catch (final Exception e) {
            logger.warn("Failed to change password for {}", username, e);
            throwValidationError(messages -> messages.addErrorsFailedToChangePassword(GLOBAL), toIndexPage);
        }
        return redirect(getClass());
    }

.message-content p {
    margin: 0.5rem 0;
}

.message-content p:first-child {
    margin-top: 0;
}

.message-content p:last-child {
    margin-bottom: 0;
}

/* Headings in messages */
.message-content h1, .message-content h2, .message-content h3,
.message-content h4, .message-content h5, .message-content h6 {
    margin: 0.75rem 0 0.375rem; font-weight: 600; line-height: 1.3; color: #172b4d;
}

        return createSession(userId);
    }

    /**
     * Adds a message to a session.
     *
     * @param sessionId the session ID
     * @param message the message to add
     * @return true if the message was added, false if the session was not found
     */
    public boolean addMessage(final String sessionId, final ChatMessage message) {
        final ChatSession session = getSession(sessionId);

constraints.ScriptAssert.message = Ekspresi script "{script}" tidak benar.
constraints.URL.message = {item} bukan URL yang valid.
constraints.Required.message = {item} wajib diisi.
constraints.TypeInteger.message = {item} harus berupa angka.
constraints.TypeLong.message = {item} harus berupa angka.
constraints.TypeFloat.message = {item} harus berupa angka.
constraints.TypeDouble.message = {item} harus berupa angka.

├── fess_label.properties           # Base English labels (fallback)
├── fess_label_[locale].properties  # Language-specific labels (~1,056 lines)
├── fess_message.properties         # Base English messages (fallback)
└── fess_message_[locale].properties # Language-specific messages (~200 lines)
```

### Naming Convention

- **Language only**: `fess_label_en.properties`, `fess_label_ja.properties`

constraints.ScriptAssert.message = The script expression "{script}" is not true.
constraints.URL.message = {item} is not a valid URL.
constraints.Required.message = {item} is required.
constraints.TypeInteger.message = {item} must be a number.
constraints.TypeLong.message = {item} must be a number.
constraints.TypeFloat.message = {item} must be a number.
constraints.TypeDouble.message = {item} must be a number.

constraints.ScriptAssert.message = The script expression "{script}" is not true.
constraints.URL.message = {item} is not a valid URL.
constraints.Required.message = {item} is required.
constraints.TypeInteger.message = {item} must be a number.
constraints.TypeLong.message = {item} must be a number.
constraints.TypeFloat.message = {item} must be a number.
constraints.TypeDouble.message = {item} must be a number.