This fork of the Vega-Lite API template visualizes LeetCode problem performance by plotting a line of total accepted solutions against likes, with tooltips revealing problem titles. The chart uses the vega-lite-api to construct the mark, while d3.csv fetches the remote dataset. Appearance is customized through a separate config module, and the visualization renders as an SVG fitted to the browser window. The tooltip handler is initialized via vega-tooltip within the Vega-Lite setup.