Documentation lost when re-exporting from @typeberry/lib

[coderabbitai]

Problem

When re-exporting types and utilities from @typeberry/lib in jammin-sdk, the documentation is removed, making them harder to discover for developers.

Context

This issue was identified during PR review where helper functions were added to work around the documentation loss problem. The underlying issue with re-exports should be addressed to improve developer experience and discoverability.

References

• PR Implements TestJam, Testing helpers and Testing docs #106: Implements TestJam, Testing helpers and Testing docs #106
• Discussion: Implements TestJam, Testing helpers and Testing docs #106 (comment)
• Reported by: @DrEverr

Expected Outcome

Re-exported items from @typeberry/lib should retain their original documentation to enable proper IDE completion and developer discoverability.