SPEC.md and ARCHITECTURE.md were sitting at the repo root alongside
Cargo.toml/Makefile.toml/packages.d — moved both into docs/ (doubleo7
already does this for its own supplementary docs, so this matches an
existing convention in the fleet rather than inventing a new one).
Updated every doc-comment cross-reference across src/*.rs and
Makefile.toml (23 references) to the new docs/SPEC.md / docs/
ARCHITECTURE.md paths. The two files' own cross-references to each other
didn't need changing — they're still same-directory relative references.
Also updated the project reference memory pointing at ARCHITECTURE.md's
location, so it doesn't go stale pointing at a path that no longer exists.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
