Phase 1 (Door A): ingest-spec v1 implementation + §11 golden fixtures,
pinned to the current spec revision, with TDD order and byte-exact
verification criteria. Phase 2 (Doors B/C): guard-gated inbox and
external bundle import. Phase 3: configurable bundle contract via a
profile object, default profile locked to the golden suite. Phase 4:
zero-dep Node half, coordination-first with owner sign-offs.
Each plan carries explicit key assumptions with tests and a
verification section.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QeqhJpYQyghASjiJo5EhGg
