Function makePreviewClickable

script.js:335–360

(previewDiv, fullContentDiv)

    }

    function makePreviewClickable(previewDiv, fullContentDiv) {
        let isExpanded = false;
        
        previewDiv.style.cursor = 'pointer';
        previewDiv.title = 'Click to expand';
        
        previewDiv.addEventListener('click', function() {
            isExpanded = !isExpanded;
            
            if (isExpanded) {
                previewDiv.style.display = 'none';
                fullContentDiv.style.display = 'block';
                
                fullContentDiv.style.cursor = 'pointer';
                fullContentDiv.title = 'Click to collapse';
                
                const collapseHandler = function() {
                    previewDiv.style.display = 'block';
                    fullContentDiv.style.display = 'none';
                    fullContentDiv.removeEventListener('click', collapseHandler);
                };
                
                fullContentDiv.addEventListener('click', collapseHandler);
            }
        });
    }

    function updateHistoryDisplay() {
        const history = getHistory();