fix(auto-update): clean stale OMO plugin specifier cache roots#3713

deopa0402 wants to merge 2 commits intocode-yeongyu:devcode-yeongyu/oh-my-openagent:devfrom

deopa0402:fix/stale-plugin-specifier-cachedeopa0402/oh-my-openagent:fix/stale-plugin-specifier-cacheCopy head branch name to clipboard