- _guard_named_profile_under_multiplexer: when the default gateway is running
with gateway.multiplex_profiles=on, a named-profile 'hermes gateway run' hard
-errors (pointing at the multiplexer) instead of double-binding that
profile's platforms. Inert unless all hold: this invocation is a named
profile, a default-profile gateway is alive, and its config has multiplexing
on. --force overrides. Wired into run_gateway's guard chain.
- write_runtime_status gains served_profiles: the secondary-adapter startup
records [active] + multiplexed profiles into runtime_status.json so
'hermes status' can show per-profile coverage without a second probe. Absent
for single-profile gateways.
Tests: served_profiles round-trips and is absent by default; guard is inert for
the default profile / under --force / when no default gateway is running.
