Recent work added telemetry fields and a cert path not yet in the docs:
- files/agent/README.md: add uptime to the health list; document that chrony is
read from /var/log/chrony/tracking.log (not the command socket) and needs BOTH
the chrony supplementary group (DAC) and the fleet_agent_chronylog SELinux allow
(TE), plus a reachable lab NTP (123/udp firewall); note the chrony group on the
unit row.
- serving/fleet-manager/README.md: add uptime + chrony detail to the health list;
note the cert-auto agent-cert-renewer sidecar + GetCertificate hot-reload
(certreload.go) in the bring-up and checkpoint 7.
- docs/TODO.md #14: probe list gains uptime + chrony-from-tracking.log; new dated
block records uptime/reboot-pending, the 4-layer chrony-access chase (all
silent-failing; inventory.json is the isolator), and the agent-plane cert
auto-renewal, all bench-verified 2026-07-10.
- docs/fleet-management-design.md: health record gains uptime + chrony
source/stratum/offset detail.