- basic_auth_header() in config.rs replaces 6 inline STANDARD.encode calls
- warn_plaintext_credentials() logs warning at startup if auth is in config.toml
- All protocol handlers use shared helper instead of duplicating base64 logic
- Store metadata (.meta.json) alongside manifests with:
- push_timestamp, last_pulled, downloads counter
- size_bytes, os, arch, variant
- layers list with digest and size
- Update metadata on manifest pull (increment downloads, update last_pulled)
- Extract OS/arch from config blob on push
- Extend UI API TagInfo with metadata fields
- Add public_url config option for pull commands
- Add Docker upstream proxy with auth support
- Add raw repository support
- Bump version to 0.2.12