Prompt pattern
Draw charts in once, on first view
Bars and lines animate to their values the first time they appear.
Fills the motion part of a prompt.
When a chart first scrolls into view, animate the bars or the line to their final values over about 600ms, staggering series by 80ms. Show the axis labels and the final numbers immediately so the data is readable before the animation ends. Run it once per visit.
Use this motion pattern when it changes the result the agent should produce. It provides one concrete direction without deciding unrelated parts of the website.