oh-my-pi Adds Custom Role Management and Faster Session Search in Model Hub

Developer tool oh-my-pi has shipped two updates targeting usability improvements in its Model Hub. Users can now create and save custom roles — such as 'code reviewer' or 'docs writer' — directly within the hub, eliminating the need to re-enter system prompts each session. The update supports team workflows where different users require distinct agent behaviors for the same codebase. Additionally, the session selector was overhauled to use a tiered search strategy, prioritizing recently used sessions before falling back to a full scan. This change significantly reduces load times for users managing large numbers of sessions.