docs(inventory): ntp_cluster has two members, edge-1 and edge-2

edge-2 is in [edge_host] and in the ntp_servers map of install-ntp-ha.yml
(BACKUP, prio 60) and answers NTP (stratum 2) on 10.2.30.184. The comment
still called edge-1 the only member.

Refs S28-14

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ansible/inventory/pve_hosts.yml

@@ -49,20 +49,11 @@ edge-1.iot.renner.uno
 zwave_gateway
 heating_can
 
-# NTP servers. edge-1 was added here so the role would survive the PVE hosts
-# being retired for bare-metal Talos, which cannot run chrony or keepalived
-# itself. That retirement has now happened, so edge-1 is the ONLY member.
-#
-# THIS IS NO LONGER HIGHLY AVAILABLE. The group was jupiter (MASTER, prio 100),
-# saturn (90), neptune (80) and edge-1 (BACKUP, 70); the first three are gone.
-# A single VRRP member takes the address regardless of its configured state, so
-# the service address is still served, but by one thin client with
-# no failover behind it. install-ntp-ha.yml still carries the four-host
-# ntp_servers priority map, which now describes hosts that do not exist.
-#
-# Restoring redundancy needs a second chrony host that is not a Talos node.
-# See plays/install-ntp-ha.yml for why keepalived is scoped more narrowly than
-# chrony within this group.
+# NTP servers: every edge host (edge-1 BACKUP prio 70, edge-2 BACKUP prio 60;
+# see the ntp_servers map in plays/install-ntp-ha.yml). Talos nodes cannot run
+# chrony or keepalived. The jupiter/saturn/neptune entries in that map
+# describe retired PVE hosts. See plays/install-ntp-ha.yml for why keepalived
+# is scoped more narrowly than chrony within this group.
 [ntp_cluster:children]
 edge_host