- Add package_versions table with immutable version records
- Support version detection from explicit param, metadata, or filename
- Add version API endpoints (list, get, delete)
- Update ref resolution to check versions before tags
- Add version column to tags table in frontend UI
- Add Create Tag form for pointing tags at existing artifacts
- Update seed data with version records
- Add 16 integration tests for version functionality
- Go server with Gin framework
- PostgreSQL for metadata storage
- MinIO/S3 for artifact storage with SHA256 content addressing
- REST API for grove/tree/fruit operations
- Web UI for managing artifacts
- Docker Compose setup for local development