roadmap: close form-a-scalar-param-mode-carveout ([ ]->[x]) — M1 fieldtest follow-up #1 done

docs/roadmap.md

@@ -164,29 +164,30 @@ work progresses.
     `docs/journals/2026-05-18-iter-embedding-abi-m1.1.md`;
     `docs/journals/2026-05-18-audit-embedding-abi-m1.md`
 
-- [ ] **\[todo\]** form_a.md scalar-parameter mode carve-out — docs-
-  honesty tidy (M1 fieldtest friction + spec_gap, shared root).
-  `crates/ailang-core/specs/form_a.md` "Schema invariants" item 1 +
-  the Pitfalls bullet state an *unconditional* "every `(fn …)` param
-  MUST be wrapped in `(own T)`/`(borrow T)`; implicit mode is
-  rejected" — but scalars require **bare** `(con Int)` (`(own (con
-  Int))` → `use-after-consume`, `(borrow …)` →
-  `consume-while-borrowed`; bare checks `ok`). The doc the LLM reads
-  first actively misdirects M1's headline export task into a
-  body-pointing linearity diagnostic that never names the real cause.
-  Pre-existing form_a.md defect M1 made acute (the export task is the
-  first where a careful fresh author follows the mode prose for a new
-  program). Fix: state the scalar-parameter carve-out symmetrically
-  with the existing return-type carve-out (form_a.md item 1 +
-  Pitfalls), and mirror the canonical bare-scalar export-param
-  spelling in DESIGN.md §"Embedding ABI (M1)". Behaviour is settled
-  (no language/checker change) → a docs-honesty tidy in the
-  `docs-honesty-lint` class (anti-regression presence/absence pin),
-  not a brainstorm milestone. P1 — it undermines the clause-1
-  authoring ergonomics of the surface the rest of the M2–M5 arc
-  extends, so it precedes M2.
+- [x] **\[todo\]** form_a.md scalar-parameter mode carve-out — docs-
+  honesty tidy (M1 fieldtest friction + spec_gap#1, shared root) —
+  CLOSED 2026-05-18. `crates/ailang-core/specs/form_a.md` stated an
+  *unconditional* "every `(fn …)` param MUST carry an `(own/borrow)`
+  mode" rule in **four** places that contradicts shipped checker
+  behaviour (scalars take **and require** bare `(con Int)`; a mode on
+  a scalar trips body-pointing `use-after-consume` /
+  `consume-while-borrowed`). All four sites rewritten symmetric to
+  the pre-existing return-type carve-out; the already-correct
+  few-shot annotation left verbatim by design; DESIGN.md §"Embedding
+  ABI (M1)" gained the bare-scalar export-param rule + a
+  corpus-grounded `step` Form-A snippet; RED-first anti-regrowth pin
+  via `ailang_core::FORM_A_SPEC` + `norm()` (4 ABSENT + 4 PRESENT
+  form_a + 1 PRESENT DESIGN). Zero language/checker/codegen change;
+  Boss-verified docs_honesty_pin 5/0, spec_drift 8/8 (not a lockstep
+  partner), ailang-core 112/0, workspace 622→623 (+1 = the pin), zero
+  `crates/**/src/**` diff. Pure docs+pin tidy — no audit/fieldtest
+  gate (the pin IS the regression coverage). plan
+  `docs/plans/form-a-scalar-param-mode-carveout.md` (`4c266a6`) → iter
+  `7d7f04e`. Stays here briefly for context; remove once stale (full
+  record in `docs/journals/INDEX.md`).
   - context: `docs/specs/2026-05-18-fieldtest-embedding-abi-m1.md`
-    findings [friction] + [spec_gap]#1.
+    findings [friction] + [spec_gap]#1;
+    `docs/journals/2026-05-18-iter-form-a-scalar-param-mode-carveout.md`.
 
 - [ ] **\[feature\]** `ail emit-ir --emit=staticlib` — restore the
   Decision-5 IR-readability affordance for kernels (M1 fieldtest