spec/ and examples/ are CC BY 4.0, the code MIT OR Apache-2.0. The
verbatim-pin and rules.md-id checks need wanderbooks' vendored sources and
rules.md, so they move to wanderbooks; here a citation is checked in form.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp
