Follow-up on top of the helix4u #6392 cherry-pick:
- reuse one helper for actionable Docker-local file-not-found errors
across document/image/video/audio local-media send paths
- include /outputs/... alongside /output/... in the container-local
path hint
- soften the gateway startup warning so it does not imply custom
host-visible mounts are broken; the warning now targets the specific
risky pattern of emitting container-local MEDIA paths without an
explicit export mount
- add focused regressions for /outputs/... and non-document media hint
coverage
This keeps the salvage aligned with the actual MEDIA delivery problem on
current main while reducing false-positive operator messaging.
* fix(gateway): detect legacy hermes.service units from pre-rename installs
Older Hermes installs used a different service name (hermes.service) before
the rename to hermes-gateway.service. When both units remain installed, they
fight over the same bot token — after PR #5646's signal-recovery change,
this manifests as a 30-second SIGTERM flap loop between the two services.
Detection is an explicit allowlist (no globbing) plus an ExecStart content
check, so profile units (hermes-gateway-<profile>.service) and unrelated
third-party services named 'hermes' are never matched.
Wired into systemd_install, systemd_status, gateway_setup wizard, and the
main hermes setup flow — anywhere we already warn about scope conflicts now
also warns about legacy units.
* feat(gateway): add migrate-legacy command + install-time removal prompt
- New hermes_cli.gateway.remove_legacy_hermes_units() removes legacy
unit files with stop → disable → unlink → daemon-reload. Handles user
and system scopes separately; system scope returns path list when not
running as root so the caller can tell the user to re-run with sudo.
- New 'hermes gateway migrate-legacy' subcommand (with --dry-run and -y)
routes to remove_legacy_hermes_units via gateway_command dispatch.
- systemd_install now offers to remove legacy units BEFORE installing
the new hermes-gateway.service, preventing the SIGTERM flap loop that
hits users who still have pre-rename hermes.service around.
Profile units (hermes-gateway-<profile>.service) remain untouched in
all paths — the legacy allowlist is explicit (_LEGACY_SERVICE_NAMES)
and the ExecStart content check further narrows matches.
* fix(gateway): mark --replace SIGTERM as planned so target exits 0
PR #5646 made SIGTERM exit the gateway with code 1 so systemd's
Restart=on-failure revives it after unexpected kills. But when a user has
two gateway units fighting for the same bot token (e.g. legacy
hermes.service + hermes-gateway.service from a pre-rename install), the
--replace takeover itself becomes the 'unexpected' SIGTERM — the loser
exits 1, systemd revives it 30s later, and the cycle flaps indefinitely.
Before calling terminate_pid(), --replace now writes a short-lived marker
file naming the target PID + start_time. The target's shutdown_signal_handler
consumes the marker and, when it names this process, leaves
_signal_initiated_shutdown=False so the final exit code stays 0.
Staleness defences:
- PID + start_time combo prevents PID reuse matching an old marker
- Marker older than 60s is treated as stale and discarded
- Marker is unlinked on first read even if it doesn't match this process
- Replacer clears the marker post-loop + on permission-denied give-up
The gateway startup path references RedactingFormatter without
importing it, causing a NameError crash when launched with a
verbosity flag (e.g. via launchd --replace).
Fixes#8044
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
