jarld obtains and renews a certificate for another host; the host asks
for it with one command, waits, downloads it when it is newer than its
copy and runs a hook with the paths in JARL_CERT_* variables.
- Certificates have an owner user; another user can't take the name.
An existing one is obtained again only when a name is added or
removed. A new certificates grant (names=) says which names a user
may have; it is never part of "*". Users may own
certificates.max_per_user certificates (10) or their own cert_limit.
- POST /certificates/{name}/request; owners may list, show, export and
delete theirs; keys only over HTTPS, the socket or loopback; every
download is recorded and shown as "Pulled by".
- CLI: jarl cert get (saved settings, all saved when no name), cert
saved, cert forget, cert schedule (daily systemd timer, Linux, root).
- Migration 14. Tests: server, auth, and e2e against Pebble.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
