Brummel
a84ba596cf
Executable projection of spec 0062 (#55) into four tasks: (1) the borrow-return reject, (2) the borrow-over-value reject, (3) a throwaway `ail migrate-modes` pass (parse -> Implicit->Own, keep explicit own/borrow -> print explicit), (4) the atomic cutover (run the migration over the corpus + hand-fix the read-only-heap params the now-universal linearity check flags, delete the variant + all compile sites compiler-driven, parser bare-slot reject, reset the hash pins, flip the leak pin, update both contracts, drop the throwaway). Placeholder-free; all seven surface fixtures parse-gated against HEAD. Spec 0062 marked approved (user, 2026-06-01) and its soundness re-validated against post-#56 HEAD: the three own-return-provenance / regime-A fixtures still exit 1 under [consume-while-borrowed]; #56's application-is-a-borrow change does not weaken them (none is an application of a borrowed binder). plan-recon folded four spec-enumeration corrections into the plan: - kernel migration target is raw_buf/source.ail, not the retired kernel_stub/source.ail the spec cited; - FIVE hash pins shift, not the two the spec named (embed_export_hash, eq_ord_e2e, mono_hash_stability are the missed twins); - design/contracts/0002-data-model.md also documents the "implicit" JSON form and is drift-anchored -> updates alongside 0008; - real counts are 261 fn-type fixtures (spec ~208) and 17 fn_implicit references (spec 16); the compiler is the authoritative enumerator. refs #55