React and Next.js Data Visualization Overview Use this skill when the visualization lives inside a React or Next.js product surface. The focus is not just chart rendering. The focus is component ownership, hydration safety, client and server boundaries, bundle strategy, and clean integration between React and whichever visualization layer is actually drawing the marks. Default assumption: React should own structure, layout, and application state, while the visualization layer owns scales, geometry, and narrowly scoped imperative rendering. If the main request is about screenshot testing, visu…