Bind mounts set up in run_chroot_finalizer used to be torn down in finish,
but finish doesn't run when a phase between the two raises. Move the unmount
loop into a dedicated cleanup_bind_mounts function and call it from main()'s
finally so it runs on success, failure, and KeyboardInterrupt.
The orchestrator drives an offline install on the live ISO using
archinstall as a library subsystem. Lands under configs/airootfs/ so
mkarchiso bakes it into the live squashfs directly:
/usr/share/omarchy-iso/orchestrator/ (the Python package)
/usr/local/bin/omarchy-iso-install (thin shell wrapper that
execs python -m orchestrator.main)
Two corrections vs the previous omarchy-installer location:
1. omarchy-installer dropped from EARLY_PACKAGES \u2014 it's live-ISO-only
install tooling, must never land on the target. /etc/skel is still
populated pre-useradd via omarchy-settings.
2. run_chroot_finalizer now copies /usr/share/omarchy from the live
ISO into /mnt/tmp/omarchy-install/ before arch-chroot. finalize.sh
+ install/ scripts run from /tmp inside the chroot; /tmp is wiped
on first reboot, so the target boots with zero install detritus.