Adds GET /ntp/sources endpoint (runs chronyc sources, parses tabular
output) and a new "Peer status" tab in the NTP page showing all
configured peers with mode, state badge, stratum, poll interval,
reach register, last-rx and offset/error sample.
v1.1.101
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>