v1.5.0 – RustFS Support

No breaking changes, and nothing changes for an existing workflow: this release only adds a
provider.

Added

• RustFS provider preset. provider: rustfs selects path-style addressing and the us-east-1
  default region for RustFS, the Apache-2.0 Rust object store that reached
  1.0 in September 2026. The full integration suite runs against RustFS 1.0.0 in CI, next to
  Garage, SeaweedFS and MinIO. Ranged downloads, multipart uploads, object tagging, user metadata
  and conditional writes all work, so no feature is disabled for it.
  • RustFS serves S3 on port 9000, the port MinIO uses, so endpoint sniffing cannot tell the two
    apart and reports minio. Both presets resolve to the same settings; set provider: rustfs
    to name it in the log.