v5.1.0 — useWaypoint composable

Added

• useWaypoint(target, { active, observerOptions }) — headless composable alternative to the component: lazy observer creation, reactive active/options, effect-scope auto-disposal, explicit stop() for use outside components. Reuses the component's observer logic.

Changed

• CI on Node 24 (latest LTS).

100% test coverage (37 tests).