v0.2.2

Fixed

• Fixed S3 key construction for directory markers being inconsistent across code paths. Consolidated all key building into a single _make_s3_key(prefix, info) helper, ensuring trailing / is always appended for directories. Previously, the upload-copies path relied on a separate fixup in _put_to_s3, while the delete path had its own inline fix — a pattern that caused the v0.2.1 bug.

v0.2.1

[0.2.1] - 2026-01-14

Fixed

• Fixed S3 prefix matching bug where paths like s3://bucket/data/ would incorrectly match adjacent paths like s3://bucket/data_backup/. The _list_s3_objects() function now ensures directory prefixes always end with / to prevent spurious matches at path boundaries.

v0.2.0

[0.2.0] - 2026-01-07

Added

• Profile system for S3-compatible endpoints (MinIO, Nebius, etc.) (#4)
• pos3.Profile dataclass for endpoint configuration
• pos3.register_profile() for named profile registration
• profile parameter on download(), upload(), sync(), ls()
• default_profile parameter on mirror() and with_mirror()
• Support for anonymous/public bucket access via public=True
• Multiple profiles can be used simultaneously in the same context
• Cache path isolation per profile via local_name

v0.1.0

Initial release [0.1.0] - 2025-12-10

Added

• Initial extraction of pos3 from the positronic codebase as a standalone library.
• pos3.mirror() context manager for seamlessly syncing S3 files to local storage.
• Drop-in compatibility for third-party scripts (e.g., OpenCV, Pandas) that require local file paths.
• pos3.download(): Fetch S3 files to local cache with mirroring logic.
• pos3.upload(): Register local outputs for automatic background and exit-time synchronous upload.
• pos3.sync(): Bi-directional helper for resume-and-update workflows (download inputs -> run -> upload outputs).
• pos3.ls(): List files in S3 or local paths.
• Thread-safe, differential transfer logic (only syncs changes).

v0.1.0rc1

Release candidate