Now add `initPlaybookDropdown()` to the DOMContentLoaded handler.


Edit

        document.addEventListener('DOMContentLoaded', function() {
            loadProviders();
            loadConversationHistory();
            initAgentButtons();
            updateTokenEstimate();

        document.addEventListener('DOMContentLoaded', function() {
            loadProviders();
            loadConversationHistory();
            initAgentButtons();
            initPlaybookDropdown();
            updateTokenEstimate();