Records the tenet revision and its shape: instance registry and
instance keys in ~/.werkator.yml (one instance per OS user), optional
repo defaults in an explicit defaults: block merged below every repo's
own layers, repo config unchanged in each repository, registry-wins
precedence, basename repo names. Rejected: a federation dashboard over
single-repo instances (keeps N services), and the status quo.
Konzept/AGENTS architecture wording changes only when the
implementation lands; the decision list carries 0009 now.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>