Agent Builder: change summaries in Version History

Version History in Agent Builder, which already let you compare versions, now tells you what changed. When you save an agent, the new version is named with a one-line summary of what changed since the previous version. You can edit it with "Rename". In Compare, the new "Summarize changes" button gives a plain-language summary of the differences, section by section, between the version you're viewing and your draft or the published version.