Checked every README claim against the code on next and fixed the ones
that were wrong or missing: what /metrics serves and when, what
DNSWATCHER_MAINTENANCE_MODE does, CORS on the public routes,
notification retries and the in-memory alert history, the certificate
error field and old port entries in the state file, and the Design
tree's missing files. Also corrected: CNAMEs are not followed for
watched names, the root server list is never refreshed, the NS set is
the delegation from the domain's parent zone, notification contents,
and the system resolver being used for webhooks. Code problems found
are filed separately.
Model: opus-5-5
sneak