Permissions: a certificates role

A template for tokens and users that get certificates for other hosts
(jarl cert get): certificates:write, to narrow with names= in the web
UI's "Insert a template…", or --role certificates in the CLI. The token
form's template filter no longer counts "*" as covering certificates,
as the server doesn't.

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

docs/permissions.md

@@ -185,6 +185,7 @@ you can then edit.
 | `dns-editor` | `zones:write`, `records:write`, `views:read`, `acls:read`, `options:read`, `blocking:read` |
 | `operator` | `*:write` (everything except user management) |
 | `acme` | `records:write names=_acme-challenge.* types=TXT` |
+| `certificates` | `certificates:write`: certificates for other hosts (`jarl cert get`) for any name in Jarl's zones. Narrow it to a host's names, e.g. `certificates:write names=web01.adbraun.lol` ([certificates.md](certificates.md#certificates-for-other-hosts)) |
 
 ```sh
 jarl user create alice --role dns-editor
@@ -210,6 +211,7 @@ The audit log shows the user and the token name.
 jarl token create laptop                                  # full rights of the user, no expiry
 jarl token create ci --grant "records:write zones=lab.adbraun.lol" --expires 90d
 jarl token create certbot --user certbot --role acme       # admin: a token for another user
+jarl token create web01 --grant "certificates:write names=web01.adbraun.lol"   # jarl cert get on one host
 jarl token list --all
 jarl token revoke 12
 ```