Follow-up to the salvaged #88219 visibility/15fps work:
- Dormancy: the rAF loop stops scheduling frames when no faces are mounted
or none are visible, instead of running the 1Hz whole-document shadow-root
scan forever. A mounting BotFace or a face scrolling into view wakes it.
- Teardown: register() now hooks ctx.onDispose so disabling the Bots plugin
(or a hot reload) cancels the animation frame, disconnects the
IntersectionObserver, drops cached nodes, and clears window.__hbFaceClock.
Previously the loop ran until app restart even with the plugin disabled.
- Behavioral tests for park/wake/stop via a vm-extracted clock harness,
verified to fail against the pre-fix source.
Teknium
ce1f5dd30d