1.79.15 (2026-09-23) Bug Fixes encode download Content-Disposition per RFC 6266 and RFC 8187 (#1386) (0e7910f) enforce copy source preconditions in the file backend (#1407) (a2e810a) s3 presign hoisted headers (#1433) (e997da2) s3 presign multipart create/complete (#1434) (d023a97)