b7005692b3
* fix(security): resolve DNS before vetting external hostnames (SSRF cluster) * fix(security): harden SSRF fix per review (rsync backup path, S3 config-save, webhook transient-DNS retry) * fix(security): S3 endpoint validation on any endpoint update + no-connect on unresolved webhook host (codex r2) --------- Co-authored-by: Paul Nothaft <paul@MacStudio-von-Paul.local>