On macOS a second Electron main aborts inside _RegisterApplication
before any Orca JavaScript can apply the one-Orca-per-profile rule, so
supervisors and agents retrying 'orca serve' loop on SIGABRT (#14541).
The CLI now checks the profile before it execs Electron serve. A runtime
that answers, or whose socket accepts, is live; one whose socket neither
accepts nor refuses, or that refuses this CLI's credentials, is
unverifiable; both refuse with exit code 3, the single-instance code
systemd units already key off. Only a definitive refusal (ENOENT or
ECONNREFUSED) lets it start. A fresh profile keeps the old synchronous
launch. A macOS startup abort is remembered per environment, so a later
separate 'orca serve' from the same launchd session refuses for 30
minutes with exit 78 instead of aborting again; --force overrides, and
a serve that reaches readiness clears it.
Adapted from #14768; the Launch Services diagnostic wording and the
exit code 3 contract come from #14542.
Co-authored-by: m4air <m4air@Mac.localdomain>
Co-authored-by: Jinwoo-H <jinwoo0825@gmail.com>
Co-authored-by: thiagomsoares <5190162+thiagomsoares@users.noreply.github.com>
