Ingest stamped every resource's SourceStatus "online" and replaced a zero
LastSeen with time.Now(), so a source that never delivered a resource
(synthesized offline PVE placeholders, never-polled instances) reported a
fresh sighting and a healthy source forever: markStaleLocked skips zero
LastSeen entries, so the stamp was permanently exempt from stale-marking.
That fabricated freshness fed monitor previous-state reads (the
resurrection loop mitigated in 8372a22c5), the frontend lastSeen display,
the monitored-systems ledger, and AI/agent context.
- ingest/mergeInto/IngestResources/presentation coalesce: stamp per-source
delivery status from the actual sighting ("unknown" when the source has
never delivered, "online" otherwise) and preserve zero LastSeen instead
of substituting ingest time.
- replaceRegistry: run MarkStale over the fully assembled registry. The
IngestSnapshot stale pass ran before record sources (TrueNAS, VMware)
were ingested, leaving them stamped "online" at any age.
- monitorLastSeenUnix: report 0 for never-seen instead of time.Now(), so
the frontend renders a dash rather than "just now".
- connected infrastructure: clamp zero LastSeen to 0 ms instead of the
negative UnixMilli of the zero time.
preserveOrExpireNodes keeps requiring a real online sighting for grace;
the registry no longer manufactures the timestamps that made that guard
necessary, so the 8372a22c5 failure mode is impossible by construction.
rcourtman