Function render_target 

fn render_target(target: &LabelTarget, label: &str) -> String

Compute the display string for a reference to target.

Section targets render as their bare hierarchical counter (e.g. "1.2"). Figure targets render kind-aware as "Figure N": the localized figure_supplement joined to the figure’s flat document-order counter with a non-breaking space (U+00A0): one cohesive label token the layout engine honors, not a wrapping decision made here (see number_figures). Generic targets (paragraphs, images, raw blocks) have no counter and render as the bare label.