This commit introduces two major improvements:
1. **Hierarchical S3 Key Structure**:
- Replace URL-based hashing with remote-name/hash(directory_path)/filename format
- Enables remote-specific cache operations and intuitive S3 organization
- Cache keys now independent of mirror URL changes
- Example: fedora/886d215f6d1a0108/eccodes-2.44.0-1.fc42.x86_64.rpm
2. **Automated Version Management**:
- Add bumpver for semantic version bumping
- Single source of truth in pyproject.toml
- FastAPI dynamically reads version from package metadata
- Eliminates manual version synchronization between files
Changes:
- storage.py: New get_object_key(remote_name, path) method with directory hashing
- main.py: Dynamic version import and updated cache key generation calls
- cache.py: Updated to use new hierarchical key structure
- pyproject.toml: Added bumpver config and dev dependency
Breaking change: S3 key format changed, existing cache will need regeneration
