walshadow: stopping flushing partial segment reason="signal" out_dir=/var/lib/walshadow/out

```
Sep 09 00:01:59 ip-10-130-0-181 walshadow-run[2276]: 2026-09-09T00:01:59.422767Z INFO walshadow: status segments_shipped=2 last_lsn="0/23000000" shadow_apply="0/220002D0" source_ahead_bytes=16777216 metrics=total=13 xlog/to_shadow=7 xact/to_shadow=1 standby/to_shadow=3 heap/to_decoder=2 kept=11 dropped=2 relmap_updates=0 pg_class_undecoded=0 pg_class_oid_in_prefix=0 decoder=de>
Sep 09 00:02:00 ip-10-130-0-181 walshadow-run[2276]: 2026-09-09T00:02:00.735813Z INFO walshadow: status segments_shipped=3 last_lsn="0/24000000" shadow_apply="0/24000000" source_ahead_bytes=16777216 metrics=total=18 xlog/to_shadow=11 xact/to_shadow=1 standby/to_shadow=4 heap/to_decoder=2 kept=16 dropped=2 relmap_updates=0 pg_class_undecoded=0 pg_class_oid_in_prefix=0 decoder=d>
Sep 09 00:02:07 ip-10-130-0-181 walshadow-run[2276]: 2026-09-09T00:02:07.523310Z INFO walshadow::config: reload diff applied pending=0 applied=3
Sep 09 00:02:20 ip-10-130-0-181 walshadow-run[2276]: 2026-09-09T00:02:20.177268Z INFO walshadow: stopping — flushing partial segment reason="signal" out_dir=/var/lib/walshadow/out
Sep 09 00:02:20 ip-10-130-0-181 systemd[1]: Stopping walshadow catalog-replay daemon...
Sep 09 00:02:20 ip-10-130-0-181 walshadow-run[2276]: 2026-09-09T00:02:20.185238Z WARN walshadow: walsender connection ended error=server: protocol: client sent Terminate
Sep 09 00:02:20 ip-10-130-0-181 systemd[1]: walshadow.service: Deactivated successfully.
Sep 09 00:02:20 ip-10-130-0-181 systemd[1]: Stopped walshadow catalog-replay daemon.
Sep 09 00:02:20 ip-10-130-0-181 systemd[1]: walshadow.service: Consumed 4.385s CPU time.
```