Tests use @aws-sdk/client-s3 against https://upload.asepharyana.my.id
with forcePathStyle=true. Covers all standard S3 operations:
ListBuckets, CreateBucket, HeadBucket, DeleteBucket, PutObject,
GetObject, HeadObject, ListObjectsV1/V2 (prefix, delimiter),
CopyObject, DeleteObject, DeleteObjects (batch), error handling.
Multipart is excluded from SDK tests — the SDK adds amz-sdk-* /
x-amz-user-agent to signed headers, which can differ between
signing time and the actual request through Cloudflare, causing
403 SignatureDoesNotMatch. Multipart is verified via manual
SigV4 signing in test/production-e2e.test.ts.