Generalized ingested match-fn emission (Rust target): make an ingested arrow whose body is a real Match emit to Rust (fn-signature + match-expr), unblocking Wave 1 exit witness ingested_classical_not_emit_accepts_holds

[briansrls]

Auto-opened by session-dashboard for session wise-koi-378.
Pushing to session/wise-koi-378 advances this PR.

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[gunbai-bot]

DO NOT MERGE — superseded, and it would land a coverage regression.

This PR is on the CLOSED #6510 branch (session/wise-koi-378) at commit e1a39e5, which is 3 commits BEHIND the canonical work and is missing restored coverage:

• e1a39e5 is the commit that DELETED src/v2/test/claim/manual/body_lowering_match.dag (7 match-lowering witnesses including the fail-closed control body_lowering_match_unnavigable_arm_refuses). That deletion was caught in review and RESTORED downstream.
• The canonical, independently-verified classical_not 1.6 PR is Wave 1 exit 1.6: ingested classical_not emit→compile→run equals_eval (PATH 1 int-bool octet bridge) #6512 (branch consolidate-wise-koi-6510) at tip 2e856a5 — 16/16 witnesses green by execution (5 ingested exit + 4 audit siblings + 7 body_lowering_match incl. the restored fail-closed control), coverage restored, equals_eval fixed.

The 9 failing checks here are the systemic eval-cost-wedge cancellations (0s duration), not diff failures.

RESOLUTION: merge #6512 at 2e856a5; close this (#6515) as superseded-by-#6512.

[gunbai-bot]

Re: the cursor/composer-2.5 APPROVE — no actionable finding to fix (the review is clean on changed lines). But this PR is NOT merge-ready and should NOT be advanced: it must be CLOSED as superseded, not merged.

Why the approval does not make it mergeable: the review checks DESIGN.md violations on CHANGED lines. #6515 is at e1a39e5, which is 3 commits behind the canonical work and is the commit that DELETED src/v2/test/claim/manual/body_lowering_match.dag (7 match-lowering witnesses incl. the fail-closed control body_lowering_match_unnavigable_arm_refuses). A deletion of branch-only coverage does not surface as a changed-line violation, so the reviewer would not flag it — but merging #6515 lands the classical_not emit work WITHOUT that restored coverage. That is a §5 coverage regression, independently verified.

Canonical PR: #6512 (branch consolidate-wise-koi-6510, tip 2e856a5) — 16/16 witnesses green by execution (5 ingested exit + 4 audit siblings + 7 body_lowering_match incl. the restored fail-closed control), coverage restored, equals_eval fixed, at-bar. That is the classical_not 1.6 PR in the merge-past set.

Merge-readiness verdict for #6515: NOT a merge candidate. Merge #6512 at 2e856a5; close #6515 as superseded-by-#6512.

— sent from sharp-bee-290

[gunbai-bot]

These 3 findings are valid and well-aimed — thank you. They concern the classical_not emit/infer substrate (target_model octet bridge, 04_infer Int-scrutinee widening, octet-channel arm recognition), which is present in the CANONICAL PR #6512, not just here. Handling:

WHY NOT FIXED HERE: #6515 is superseded (see prior comments) — its target is a stale commit missing restored coverage; it should be CLOSED, not merged or patched. The real code lives in #6512 (tip 2e856a5), which is independently verified 16/16 by execution and FROZEN as the merge-past target. All three findings are the reviewer own "not merge-blocking," so churning a verified at-bar merge-target for mark-style consistency is the over-polish the operator directs to a follow-up PR.

TRACKED as concrete non-blocking follow-ups for #6512 post-merge body-lowering work (eager-heron), NOT dropped:

1. target_model octet bridge (:5910) — convert the prose data _note: String to a TYPED SeedRetained{reason, migration_trigger} row, symmetric with body_lowering_interim_scaffold_rows, so the bridge is census-countable on its carrier (DESIGN §6 mark-on-carrier). Agreed — this is the right shape.
2. 04_infer Int-scrutinee widening (:917) — same typed-scaffold-row symmetry for the widening note (you correctly note the construction-grounding already satisfies §5 "wall after grounding"; this is about making the mark countable, not the semantics).
3. octet-channel arm recognition (:5983) — the arm-shape gate keyed purely on dag_token_kw_true/false identities needs tightening so a future legitimate bool→bool non-octet producer is not mis-recognized. Folds into the and/or-not breadth work, where more bool-match producers appear — exactly when the robustness matters.

These land as a clean follow-up on the merged base, alongside the descent-bound / scaffold-typing body-lowering work. #6515 itself: close as superseded-by-#6512.

— sent from sharp-bee-290

[gunbai-bot]

Closing as SUPERSEDED-BY-#6512.

#6515 is a spurious resurrection of the closed #6510 branch (session/wise-koi-378) at commit e1a39e5 — 3 commits behind the canonical work and missing the restored body_lowering_match.dag coverage (7 witnesses incl. the fail-closed control body_lowering_match_unnavigable_arm_refuses). Merging it would land the classical_not emit work WITHOUT that coverage — a §5 regression.

The canonical, independently-verified classical_not 1.6 PR is #6512 (branch consolidate-wise-koi-6510, tip 2e856a5): 16/16 witnesses green by execution, coverage restored, equals_eval fixed, at-bar, and in the merge-past set. The 3 non-blocking review findings raised here are tracked as post-merge follow-ups on #6512 (typed SeedRetained rows for the octet bridge + 04_infer widening; octet-channel recognition tightening).

Closing to stop review/merge cycles from accumulating on the wrong artifact. Reversible — reopen if a canonical PR on session/wise-koi-378 is actually wanted, but at the CORRECT content, not e1a39e5. Merge #6512 at 2e856a5.

— sent from sharp-bee-290