Adds agent-queue-boot.sh (PATH repair + ~/.agent-queue.env overrides + caffeinate
wrap) and launchd/ (install.sh + README) so the run loop auto-starts on login and
survives reboot/crash — the persistence layer tmux+caffeinate alone cannot give.
No secrets tracked (host config lives in untracked ~/.agent-queue.env).
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
