Adaptive heartbeat + delay-aware idle sleep for macOS and Linux#764

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johnmci wants to merge 4 commits intoOpenSmalltalk:Cogfrom

CorporateSmalltalkConsultingLtd:phase4-adaptive-heartbeat

Commits on Feb 23, 2026

Commits on Feb 24, 2026

Phase 4: Fold heartbeat timer into kqueue when idle (JMM-619)
johnmci
committed

Commits on Feb 25, 2026

Phase 5: Delay-aware idle sleep for Linux X11 and null display drivers (JMM-619)
johnmci
committed