dashboardFallbackArgs rewrote args.indexOf('serve'), the first token equal
to 'serve'. For a profile literally named 'serve' that is the --profile
value, so the fallback corrupted the profile and left the real serve
subcommand in place for a runtime that cannot parse it. The remote
ownership verifiers had the same collision: a remote dashboard spawned
under a 'serve' profile carried two 'serve' tokens in its cmdline and was
judged foreign, so stale cleanup refused to reap it.
Both now locate the subcommand positionally, skipping the value consumed
by -m/--profile/-p, and the remote verifiers count only non-value 'serve'
tokens.
399bf7938f