Improve the Harness Without Forgetting What Worked
TL;DR for operators A recurring failure in agent improvement is surprisingly mundane: a rewrite fixes one weakness and silently removes something that was already working. PluginRSI addresses that problem by changing the unit of optimization. Instead of asking an optimizer to repeatedly rewrite the complete surrounding agent system, it represents roles, tools, skills, and memory as versioned plugins. Individual plugins can be changed and tested while most of the system stays fixed; the overall workflow is then recomposed from the growing library of successful components. ...