Store server IPs in one form (no brackets, short lower-case IPv6) and
write each address in the form its context needs:
- URLs and host:port (Sentinel, database URLs, SFTP backup download,
DNS servers, SMTP, webhook base URLs, links, health checks) get
brackets through formatHostForUrl().
- Traefik Host() rules use the address without brackets, so IPv6
domains no longer return 404; saved labels are fixed at deploy.
Caddy keeps the brackets.
- SSH keeps the plain address.
- Hetzner gives an IPv6 /64 network; IPv6-only servers now get the
server address (prefix::1) instead of the unusable prefix::64.
- sslip labels, registry image names with an IPv6 host, the API domain
list, allowlist matching and duplicate checks handle IPv6.
A migration normalizes stored IPv6 server addresses, repairs Hetzner
servers saved as ::64 that are not reachable, and adds brackets to
saved Sentinel URLs.
Enable `HasFactory` on `Environment`, `Project`, `ScheduledTask`, and
`StandaloneDocker`, and add dedicated factories for related models to
stabilize feature/unit tests.
Also bump `visus/cuid2` to `^6.0` and refresh `composer.lock` with the
resulting dependency updates.
- Add regex validation to restrict allowed characters (alphanumeric, spaces, and specific safe symbols)
- Enforce maximum 1000 character limit on healthcheck commands
- Strip newlines and carriage returns to prevent command injection
- Change input field from textarea to text input in UI
- Add warning callout about prohibited shell operators
- Add comprehensive validation tests for both valid and malicious command patterns