An offline trivy install crash-looped (server FATALs when it can't fetch the
vuln DB), and on rootless docker the restart storm churned the shared network's
port-forwarder until the WebUI's own published host port was torn down — the
WebUI stayed healthy INSIDE its container but was unreachable from the host, with
nothing detecting or healing it.
Three fixes, in the house self-healing style (mirrors the network-drift trio):
1. Control-plane health checker wired into the existing task-processor idle poll
(maybeRegenPoll), no new daemon. dockerHealthScan (read-only) detects daemon
down, a WebUI running-but-host-port-unreachable (the port-forward corruption),
and crash-looping containers. webuiSystemHealthCheck writes
frontend/data/system/health_status.json + self-dispatches a heal — the user
can't click a button on a dead WebUI, so the poll drives the fix. Frontend
health-notifier surfaces a topbar badge + dashboard banner + details panel.
2. Failure cap, enforced centrally by dockerHealthHeal (task-gated): stops
crash-loopers (removing the churn), restarts the WebUI to re-publish a lost
port forward, and — only if that fails — recycles the rootless daemon and
restarts the core container. Caps every app immediately, no template churn.
3. Trivy no longer crash-loops offline: the server runs in a shell retry-loop so
the container stays Up and quietly retries on a backoff instead of exiting
FATAL. Verified: container stays Up across repeated DB-download failures.
Core WebUI compose gains restart: unless-stopped so it self-recovers after a
reboot / daemon recycle instead of staying down.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>
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