Project Config Should Travel With APC
When a team decides how an agent should behave in one repository, that decision should travel with the repository.
That is why project config should live in APC.
APC is the portable context layer. It keeps repository-owned agent context in AGENTS.md and .apc/. APX is the daily-use runtime and tooling layer. It reads that portable context, merges it with machine-local runtime settings, and keeps sessions, messages, and secrets outside the repo.
That split becomes especially useful with configuration.
