The master spec at experiments/2026-05-12-cross-model-authoring/
master/spec.md taught two wrong Form-A keywords:
- Term position: `(ctor TYPE-NAME CTOR-NAME ARG*)` — parser
rejects this; the canonical keyword is `term-ctor`. The bare
`(ctor ...)` is reserved for the inside of `(data ...)`
definitions only.
- Pattern position: `(ctor CTOR-NAME SUBPAT*)` — the canonical
pattern keyword is `pat-ctor`.
The JSON section was already correct (canonical schema tag IS
"t": "ctor", per ast.rs:471). Only the AIL section had drifted.
Empirically caught by the Qwen3-Coder naming-A/B run on 2026-05-21
(experiments/2026-05-21-naming-ab/runs/r1/), where every
t4_count_zeros output produced `(ctor List Nil)` in term position
and failed `ail check` 100 % across all three cohorts — a
constant tax independent of the naming variable under test.
Re-rendered rendered/ail.md from the patched master via
xmodel-render. rendered/json.md unaffected.
closes#28
Brummel
b85d498d03