Static SVG export
A captioned, self-contained SVG of a settled plot.
serializeChartSvg
serializeChartSvg(root, { title, description }) returns a static, captioned SVG of a settled SVG-backed plot with resolved paint and font styles. It includes the plot only; surrounding HTML summaries, legends and controls are outside its scope. HTML-only chart families raise a clear error. Fonts must be available wherever the SVG is viewed.