Authoring bots — the four rules a catalog bot must clear

A bot shipped in bots/ is a general-purpose tool. It must be repo-agnostic (no iterion paths baked in), stack-agnostic (adding a language is dropping a skill file), convergent (an asymptote, not an oscillation), and declare the tools it needs. The mirror rule — the engine must never know a specific bot — is here too, because the two are one boundary seen from both sides.