I do something similar. I don’t necessarily call it AGENT or STATE and every project has its own files. I have architecture documents that accompany change log

I do something similar. I don’t necessarily call it AGENT or STATE and every project has its own files. I have architecture documents that accompany change log descriptions that load technical knowledge that the agent can readily use. I find it also necessary to have a principles document outlining the particular problems that the software is supposed to solve and guard rails to not cross. I call it promise driven development.