Lap-2 review's top two findings:
#1 Node titles were still jargon (the lap-1 disease one level down). Every node
now has a plain_t ("var-go Oath" → "Definition of done", "Admission controller"
→ "Tamper-proof seal", …); Plain view leads with it and demotes the technical
name to a dim in-card subtitle — mirrors the stage-head pattern. plain_t on every
authored node is now guard-tested.
#2 Transition labels lived only in the SVG spine (display:none <820px) with a
hover-only rationale — invisible on phones. Added stacked-layout transition rows
(HTML, always-visible, full sentence, no hover) shown on mobile; desktop header
band scoped to ≥821px so mobile isn't stretched.
build/vet/lint(0)/test green; desktop Plain screenshot-verified.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
