`hermes profile delete` read the target profile's gateway.pid raw and
SIGTERMed it. When that pid file was poisoned by a sibling profile's gateway
(the #89315 shape), deleting profile A killed profile B's running gateway.
- gateway/status.py: `_pid_record_belongs_to_profile()` helper — a pid
record whose recorded home differs from the expected profile home is not
ours; legacy records without a home prove nothing and are left alone.
- hermes_cli/profiles.py: `_stop_gateway_process` refuses (and says so)
when the record belongs to another profile; still stops its own gateway.
The stop/restart paths in hermes_cli/gateway.py did not need a guard:
`get_running_pid()` already filters cross-profile records and unlinks the
poisoned pid file before any kill can happen — verified live; the test for
that path now pins the real contract (returns False, other process alive,
poisoned pid file gone).
Live repro (unpatched main): `_stop_gateway_process(tim_home)` -> "Gateway
stopped (PID ...)" and the OTHER profile's process exits -15. After: "Refusing
to stop PID ..." and the process stays alive. 8 tests; sabotage (guard
removed) fails 1.
Teknium
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