post3/todos/POST3-008-client-sdk.md

POST3-008: Client SDK crate

Status: Done Priority: P0 Blocked by: —

Description

Create a crates/post3-sdk/ client crate that wraps aws-sdk-s3 with post3-specific defaults.

What was built

• crates/post3-sdk/Cargo.toml — depends on aws-sdk-s3, aws-credential-types, aws-types, aws-config
• Post3Client struct wrapping aws_sdk_s3::Client
• Post3Client::new(endpoint_url) — builds client with force_path_style, dummy creds, us-east-1
• Post3Client::builder() — for advanced config (custom creds, region, etc.)
• Re-exports: aws_sdk_s3 and bytes
• Convenience methods:
  • create_bucket(name), head_bucket(name), delete_bucket(name), list_buckets()
  • put_object(bucket, key, body: impl AsRef<[u8]>)
  • get_object(bucket, key) → Result<Bytes>
  • head_object(bucket, key) → Result<Option<ObjectInfo>>
  • delete_object(bucket, key)
  • list_objects(bucket, prefix) → Result<Vec<ObjectInfo>>
• inner() access to aws_sdk_s3::Client
• Unit tests + doc-tests pass