curl -fsS https://my.taler-ops.ch/config | jq -r '.name,.build_version,.version'
# expect: taler-merchant / 1.6.23 / 42:0:30

dpkg-query -W taler-merchant taler-merchant-webui
# expect: 1.6.23-0+trixie ; 1.6.43-0+trixie

systemctl is-active taler-merchant-httpd
# expect: active

pg_lsclusters -h
# expect: 17 main 5432 online ...

# use /root/mytops-admin-log tip containing 4488fc1 (pg_ctlcluster + online assert)
# NOT the old systemctl restart postgresql.service alone
cd /root/mytops-admin-log && git rev-parse --short HEAD
# expect: 4488fc1 or later ancestor with the PG fix

# run upgrade.sh for merchant (+ webui if co-upgrading)
# expect: script exits 0; no "ERROR: PostgreSQL cluster ... is not online."

dpkg-query -W taler-merchant
# expect after install: 1.6.24-0+trixie

pg_lsclusters -h
# expect: 17 main ... online ...  (HARD FAIL if down)

systemctl is-active taler-merchant-httpd taler-merchant.target
# expect: active

journalctl -u taler-merchant-httpd -n 100 --no-pager
# expect: no restart loop; no fatal migration error; no missing PG socket

curl -fsS https://my.taler-ops.ch/config | jq -r '.name,.build_version,.version'
# expect: name=taler-merchant ; build_version=1.6.24 ; version=<record actual, was 42:0:30>

curl -fsS -o /dev/null -w '%{http_code}\n' https://my.taler-ops.ch/webui/
# expect: 200