Feature regression in an Agent SDK. Specifically, the removal of 'skills' and other modules between versions.

This issue reveals significant user dissatisfaction due to perceived feature regression in the open-agent-sdk-typescript. The removal of 'skills' and other modules between versions directly impacts developer utility and trust. For an open-source SDK positioned as an alternative to established solutions, maintaining feature parity or providing clear migration paths is crucial. Such regressions can alienate early adopters and hinder broader adoption, as developers rely on consistent functionality for their projects. This highlights the critical importance of managing breaking changes and communicating roadmap decisions effectively in open-source projects, especially those competing in the rapidly evolving AI agent development space.