Metric history: the per-minute sampler (clusev:sample-metrics) now reads
cpu/mem/disk from the `servers` DB row — the same source the live gauges read,
shared via MariaDB — instead of a cross-container Redis cache the poller may
not share in prod. It gates on last_seen_at freshness (skip offline/unpolled)
and keeps `load` as a best-effort cache read. History now fills whenever the
gauges have data, independent of the cache driver or container split — the
prod detail page no longer shows "Noch keine Verlaufsdaten" after hours.
Service-action failures are persisted: a failed systemctl start/stop/restart
writes a red service.<op>.failed AuditEvent with the FULL systemctl reason in
meta['output'] (mb_scrub-ed, 4000-cap), shown expandable in the audit log — a
truncated, ephemeral toast is no longer the only trace. The failure toast is a
short pointer to the audit log, level=error, and error toasts now linger 9s.
Alert delivery: a warning banner appears on the alerts page when NO channel
would reach anyone (no SMTP + no safe webhook + no Gotify). A new Gotify push
channel (server URL + encrypted app token) posts title/message/priority with
the token in X-Gotify-Key; a self-hosted LAN Gotify is allowed (scheme-checked,
not private-range-blocked like the SSRF-guarded webhooks) — a real push when a
service goes down, no e-mail needed.
Secret-retarget hardening (Codex-found class): changing a target while leaving
its secret blank could send the OLD secret to the NEW endpoint. Closed for the
Gotify token, the SMTP password (save + test-send + the runtime mailer), and
the host-terminal SSH credential (username/port change) — each drops/forbids
the stale secret before the new target is stored. Setting::uncached() reads the
security-sensitive keys DB-direct so a cache-repopulation race can't re-pair an
old secret with a new target. Three Codex rounds, clean; 778 tests.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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