cloud_sync_s3 0.1.1

S3 + S3-compatible adapter for the cloud_sync family. Works with AWS, R2, MinIO, B2, Wasabi, DO Spaces via endpoint override. Hand-rolled SigV4.

0.1.1

Initial release. S3 + S3-compatible storage adapter for the cloud_sync family.

• S3Adapter implements StorageAdapter from cloud_sync_core
• S3Config — bucket, region, endpoint override, path-style toggle (for MinIO and others)
• S3Credentials — static credentials (access key + secret key, optional session token)
• S3AuthClient — http.BaseClient wrapper that signs every request with AWS SigV4
• Hand-rolled SigV4 implementation — no aws_* family dependencies
• SHA256 preservation via x-amz-meta-sha256 custom metadata (read back via HeadObject)
• 50MB file size ceiling (no multipart upload in v1)
• Validated compatibility: AWS S3, Cloudflare R2, MinIO, Backblaze B2, Wasabi, DO Spaces