ARCHITECTURE.md establishes that visuals are a property of any question, not
a separate category. Three supported formats let the layout engine do the
work: DOT for graph topology, matplotlib for curves and Gantt charts, hand
SVG for custom layouts.
render_visuals.py is the single entry point that dispatches by visual.kind,
runs the appropriate tool, and normalizes the rendered SVG to the book's
font stack. It is idempotent and supports --dry-run.
Three exemplars cover the three formats:
- cloud-2846 (DOT): Tree AllReduce on 8 ranks — auto-laid-out topology
- cloud-2847 (matplotlib): Queueing hockey-stick curve with SLO line
- cloud-2848 (matplotlib): Pipeline-bubble Gantt for GPipe schedule
All three are status:draft pending math review and promotion in a later
batch. Existing cloud-visual-001 remains unchanged as the canonical
hand-SVG exemplar.
