Method syncStreamingCodeBlock

chat/components/ChatArea.js:936–970

(currentNode, nextNode)

            textarea.style.position = 'fixed';
            textarea.style.opacity = '0';
            textarea.style.pointerEvents = 'none';
            document.body.appendChild(textarea);
            textarea.select();
            const success = document.execCommand('copy');
            document.body.removeChild(textarea);
            return success;
        } catch (e) {
            // Fallback to async Clipboard API
            navigator.clipboard.writeText(text).catch(() => {});
            return true;
        }
    }

    handleCouncilTabSwitch(button) {
        const messageEl = button.closest('[data-message-id]');
        const label = button.dataset.councilTabLabel;
        if (!messageEl || !label) return;

        messageEl.querySelectorAll('.council-tab-btn').forEach((entry) => {
            const isActive = entry === button;
            entry.classList.toggle('council-tab-btn-active', isActive);
            entry.setAttribute('aria-selected', isActive ? 'true' : 'false');
        });

        messageEl.querySelectorAll('.council-response-panel').forEach((panel) => {
            const isActive = panel.dataset.councilPanelLabel === label;
            panel.classList.toggle('hidden', !isActive);
        });
    }

    /**
     * Gets visible text content from a message element in the DOM.
     * @param {string} messageId - The message ID
     * @returns {string|null} The text content or null
     */
    getMessageTextFromDOM(messageId) {
        const messageEl = document.querySelector(`[data-message-id="${messageId}"]`);
        if (!messageEl) return null;