Refs #1515
When an upgraded or restored Pulse server no longer recognises an agent's
API token, the report endpoint returns 401. The agent buffered and retried
that report forever with only a generic warning, and the server kept the
node green at its last known agent version because a Proxmox node stays
online via the PVE API poll even after its agent dies.
- Agent: special-case 401 on /api/agents/agent/report. Drop the report
instead of buffering it and log a throttled, actionable error pointing the
operator at the install command to mint a fresh token.
- Installer: verify_agent_server_registration now tells a rejected token
(401/403) apart from "agent has not reported yet" and prints the recovery
steps at install time instead of a vague soft warning.
- Status layer: resourceFromHost flags a stale agent (its host marked
offline by the staleness evaluator) and carries the agent's own last
report time. Coalescing keeps a node online via the PVE source but the
dead agent stays flagged, so its version is no longer presented as current.
The Machines table renders such versions as "(stale)".
rcourtman
c7dcd90b83