* fix(gateway): only fire planned-stop watcher for markers targeting self
Salvaged from #34599 — rebased onto current main.
The planned-stop watcher now only fires shutdown for a marker that targets
the current process, instead of any marker that exists on disk. Fixes the
Windows crash loop (#34597) where a stale marker from a previous Gateway
instance kills a freshly booted Gateway ~400ms after start with a false
"Received UNKNOWN — initiating shutdown".
Co-authored-by: Bartok9 <danielrpike9@gmail.com>
* fix(gateway): match planned-stop/takeover markers by PID alone when start_time is unavailable
Follow-up to the #34599 salvage. The watcher's non-destructive probe
(planned_stop_marker_targets_self) already falls back to PID equality when
a process start_time is unavailable, but the authoritative consume it gates
(_consume_pid_marker_for_self) still required a non-None start_time match.
_get_process_start_time reads /proc/<pid>/stat and returns None on macOS and
native Windows — the only platform the planned-stop watcher exists for. So on
Windows the probe would fire the shutdown handler (PID matches) but the
handler's consume_planned_stop_marker_for_self() would return False, and a
legitimate 'hermes gateway stop' was still misclassified as an unexpected
UNKNOWN exit (exit 1) and revived by the service manager — a residual half of
the #34597 crash loop on the legitimate-stop path.
Align the consume with the probe: when both start_times are known they must
match (PID-reuse guard preserved on Linux); when either is unavailable, fall
back to PID equality alone, bounded by the existing short marker TTL. This
also fixes the parallel --replace takeover consume on Windows, which shares
the same helper.
Adds regression tests for the Windows (None start_time) path, the foreign-PID
rejection under that fallback, and confirmation the start_time-mismatch guard
still rejects when both are known.
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Co-authored-by: Bartok9 <danielrpike9@gmail.com>
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