- New MOTION_GUIDE.md — the task-oriented developer front door: the `motion` prop, the three
USE domains (event/state/content), the full preset catalog, recipes (animate in/out, loop,
state transitions, staggered list in&out, springs, custom presets), reduced-motion, theming
tokens, [data-debug-stagger], and constraints. Links the model (eidos-motion) + the engine
(arts/motion) + history (RFC).
- eidos-motion.md: note the 3-domain USE framing over the engine's 2 moments (the content
domain is a usage pattern over the state machinery); fix the `fallback` overclaim — it is
NOT auto-applied (the spring honours ctx.reduced itself, per the audit fix).
- docs/README.md (corpus map) + eidos/README.md: motion was undiscoverable — add the guide to
E4 Guides + the "I want to…" table + the eidos Motion section.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
