Function onPointerMove

scripts/static/js/sidebar.js:189–198

(e)

        }

        function onPointerMove(e) {
            if (!isResizing) return;
            const dx = e.clientX - startX; // positive when moving right
            // Since the resizer is on the left edge of a right-aligned sidebar,
            // moving pointer to the right should make the sidebar narrower.
            // Compute new width as startWidth - dx.
            let newWidth = Math.round(startWidth - dx);
            newWidth = clampWidth(newWidth);
            sidebar.style.width = newWidth + 'px';
        }

        function onPointerUp(e) {
            if (!isResizing) return;