R3 Cluster M #84 runner-shim SG-0 slice

docs/briefs/r1-selfhosting-manager.md

@@ -179,7 +179,8 @@ Decisions log (append as they happen):
   retired. Further Rust deletions / `pb_*` coordination: `docs/briefs/t-pb-b-1.md`.
 - 2026-04-23: **Brief D** (`docs/briefs/t-pb-b-brief-d.md`) — extended T-PB-B inventory +
   D/G/A/B matrix + draft `TestClaim` fixtures (`tests/fixtures/t_pb_b_brief_d/*.v3`);
-  compile smoke via `t_pb_b_brief_d_fixture_smoke_test` (no `pb_*`, Rust tests unchanged).
+  the former `t_pb_b_brief_d_fixture_smoke_test` is retired in favor of the runner-backed
+  `.dag` siblings in `t_pb_b_1_dag_runner_test` (no `pb_*` gate claim).
 - 2026-04-23: SG-0 file-level census split landed as non-test/test
   sub-ratchets; `tokenize.rs` shim retired from the non-test subset.
 

docs/briefs/r1-testgen-manager.md

@@ -245,6 +245,36 @@ Lane-owner dispatch status (update as sub-deliverables close):
 
 Decisions log (append as they happen):
 
+- 2026-05-12 (R3 Cluster M #84 / PR #2716): **Deletion-guard — Brief D
+  compile-smoke shim retired after runner-backed TestClaim coverage.**
+  Receipts (1)–(3) re-verified green for the candidate surface:
+  `cargo test -p v3-compiler --test integration
+  t_pb_b_1_pipeline_smoke_suite_passes_through_runner`,
+  `t_pb_b_1_contract_diagnostic_smoke_suite_passes_through_runner`,
+  `t_pb_b_1_contract_port_cost_suite_passes_through_runner`, and
+  `r3_tests_as_data_demonstration_suite_passes_through_runner` all return
+  `ClaimResult::Pass` through `TestRunner`; `cargo test -p v3-compiler
+  --test integration sg0_census_test` confirms the SG-0 census shrink.
+  The deleted Rust file is `t_pb_b_brief_d_fixture_smoke_test.rs`; mapping:
+  - `t_pb_b_brief_d_pipeline_smoke_fixture_lowers_cleanly` →
+    `t_pb_b_1_dag_runner_test::r3_tests_as_data_demonstration_suite_passes_through_runner`
+    / suite `suite_tests_as_data_demonstration` / `TestClaim.name`
+    **`tests-as-data port of pipeline smoke fixture compiles`**.
+  - `t_pb_b_brief_d_contract_diagnostic_smoke_fixture_lowers_cleanly` →
+    `t_pb_b_1_dag_runner_test::t_pb_b_1_contract_diagnostic_smoke_suite_passes_through_runner`
+    / suite `suite_contract_diagnostic_negatives` / `TestClaim.name`
+    **`Bool annotation rejects Int literal`**.
+  - `t_pb_b_brief_d_contract_port_cost_smoke_fixture_lowers_cleanly` →
+    `t_pb_b_1_dag_runner_test::t_pb_b_1_contract_port_cost_suite_passes_through_runner`
+    / suite `suite_contract_port_and_cost` / `TestClaim.name`s
+    **`answer bind resolves`** and
+    **`answer bind has bounded cost witness (Eq 3)`**.
+  This sign-off is intentionally narrow: it retires only the compile-only
+  Brief D host shim because equivalent landed `.dag` suites are
+  runner-backed. It does not assert `pb_test_file_generated_from_dag` or
+  `pb_rust_tests_outside_residual_zero`, and it does not authorize deletion
+  of structural files such as `pipe_desugar.rs` or mixed files such as
+  `thesis_validation_test.rs` without a separate per-`#[test]` mapping entry.
 - 2026-04-26 (R1 shims / PR #899): **Deletion-guard — retired per-gate `#[test]`
   files and structural claim-name receipt.** The integration modules
   `r1_manual_claim_gate_test.rs` and `testgen_structural_coverage_gate_test.rs`

docs/briefs/t-pb-b-1.md

@@ -7,7 +7,7 @@
 - **`src/v3/compiler/tests/dag/*.dag`** — `TestClaim` / `TestSuite` as `data` declarations (`module v3.compiler.tests.t_pb_b_1.*`), schema from `src/v3/std/verification.dag`.
 - **`t_pb_b_1_dag_runner_test`** (PR #736) — `lower` asserts each declaring `tests/dag/*.dag` module compiles with **empty module diagnostics** (retired compile-smoke receipt), then `TestRunner::run_suite` evaluates each landed `TestSuite` (`Compiles`, `FailsWithDiagnostic{TypeMismatch}`, `PortHasState`, `CostBounded`). See *Receipts for pre–Rust-deletion checklist* below. (The former standalone `t_pb_b_1_tests_dag_smoke_test` file is **retired** as duplicate — see `docs/briefs/r1-testgen-manager.md` *Decisions log*.)
 
-**Compile-smoke caveat (Brief D `.v3` only):** `t_pb_b_brief_d_fixture_smoke_test` does **not** call `TestRunner`; it only asserts the declaring module lowers with empty diagnostics. That proves the draft `.v3` harness artifact lowers, it does **not** evaluate `TestPredicate` on embedded sources. Predicate evaluation for the **landed** `.dag` suites lives in `t_pb_b_1_dag_runner_test` instead: `FailsWithDiagnostic` is proven there by the runner on the embedded program, **not** by empty diagnostics on the outer file (which would invert the predicate). **`t_pb_b_1_contract_diagnostic_smoke.dag`** is the sharp example: it names `FailsWithDiagnostic` for embedded `source: "let x: Bool = 1"`; the wrapper module still lowers without diagnostics, and the runner test witnesses the embedded negative. Do not treat compile-smoke as semantic proof of the negative, and do not promote diagnostic-negative fixtures to CI-backed assertions from the smoke path alone (see also Brief D duplicate-authority / dissolution; the Brief D `.v3` `let`-binding path is still smoke-only).
+**Compile-smoke caveat (historical Brief D `.v3` only):** the former `t_pb_b_brief_d_fixture_smoke_test` did **not** call `TestRunner`; it only asserted the declaring module lowered with empty diagnostics. That proved the draft `.v3` harness artifact lowered, it did **not** evaluate `TestPredicate` on embedded sources. Predicate evaluation for the **landed** `.dag` suites lives in `t_pb_b_1_dag_runner_test` instead: `FailsWithDiagnostic` is proven there by the runner on the embedded program, **not** by empty diagnostics on the outer file (which would invert the predicate). **`t_pb_b_1_contract_diagnostic_smoke.dag`** is the sharp example: it names `FailsWithDiagnostic` for embedded `source: "let x: Bool = 1"`; the wrapper module still lowers without diagnostics, and the runner test witnesses the embedded negative. Do not treat compile-smoke as semantic proof of the negative (see also Brief D duplicate-authority / dissolution; the Brief D `.v3` `let`-binding copies are historical draft artifacts).
 
 **Compiler constraint (today):** M1(2.8) rejects standalone `data …: TestPredicate = PortHasState(…)` / `CostBounded(…)` bodies as opaque. Inline those predicates **inside** each `TestClaim` `data` record (see `t_pb_b_1_contract_port_cost.dag`) until class-5 data bodies lift the restriction — call this out when Testgen chooses how to factor shared predicates.
 

docs/briefs/t-pb-b-brief-d.md

@@ -4,11 +4,11 @@
 
 **Authority:** Post-R2 residuals in `TESTING.md` (compiler-internal `#[cfg(test)]` under `src/v3/compiler/src/`; boundary tests invoking external toolchains). **Schema:** `src/v3/std/verification.dag` (`TestClaim`, `TestPredicate`, `requires: List<ResourceReference>`).
 
-**Gates (unchanged):** Do not remove or replace existing Rust integration tests as the source of truth. Do not assert `pb_test_file_generated_from_dag` or `pb_rust_tests_outside_residual_zero` until Testgen signals. Draft `.v3` / `.dag` modules here are **fixtures** for eventual runner wiring.
+**Gates (updated after runner-backed coverage):** Do not assert `pb_test_file_generated_from_dag` or `pb_rust_tests_outside_residual_zero` from this brief alone. The former Brief D compile-smoke shim is retired because the matching `.dag` modules are already runner-backed; the remaining draft `.v3` modules are historical fixtures until their named Testgen dissolution trigger fires.
 
-**Fixtures on disk:** `src/v3/compiler/tests/fixtures/t_pb_b_brief_d/*.v3` — each file is a self-contained v3 module declaring `TestSuite` / `TestClaim` values. **Compile smoke:** `t_pb_b_brief_d_fixture_smoke_test` in `tests/integration/` (lowers cleanly; not a pure-bootstrap gate).
+**Fixtures on disk:** `src/v3/compiler/tests/fixtures/t_pb_b_brief_d/*.v3` — each file is a self-contained v3 module declaring `TestSuite` / `TestClaim` values. **Compile smoke retired:** the former `t_pb_b_brief_d_fixture_smoke_test` host shim dissolved into the runner-backed `.dag` suites in `src/v3/compiler/tests/dag/t_pb_b_1_*.dag` plus `t_pb_b_1_dag_runner_test`.
 
-**Duplicate authority (bounded, P2/P5):** The same three claims exist here (`.v3`, suite names `t-pb-b/…`) and under T-PB-B-1 (`.dag`, suite names `t-pb-b-1/…`). **`.dag` modules are runner-backed** via `t_pb_b_1_dag_runner_test` (PR #736); **Brief D `.v3` fixtures remain compile-smoke only** (`t_pb_b_brief_d_fixture_smoke_test`) until someone intentionally adds runner coverage for the `let`-binding path. **Dissolution trigger (named):** remove or shrink the `.v3` copies once Testgen accepts `src/v3/compiler/tests/dag/t_pb_b_1_*.dag` as the single maintained source for those claims—until then, any edit to claim text must keep both paths aligned (each `.v3` file header points at its `.dag` sibling, including the runner-evaluated `CostBounded` witness value).
+**Duplicate authority (bounded, P2/P5):** The same three claims exist here (`.v3`, suite names `t-pb-b/…`) and under T-PB-B-1 (`.dag`, suite names `t-pb-b-1/…`). **`.dag` modules are runner-backed** via `t_pb_b_1_dag_runner_test` (PR #736); **Brief D `.v3` fixtures are now historical draft copies only** and no longer have a dedicated host-side compile-smoke shim. **Dissolution trigger (named):** remove or shrink the `.v3` copies once Testgen accepts `src/v3/compiler/tests/dag/t_pb_b_1_*.dag` as the single maintained source for those claims—until then, any edit to claim text must keep both paths aligned (each `.v3` file header points at its `.dag` sibling, including the runner-evaluated `CostBounded` witness value).
 
 **T-PB-B-1 (landed `.dag` home):** `src/v3/compiler/tests/dag/*.dag` + `docs/briefs/t-pb-b-1.md` + `t_pb_b_1_dag_runner_test` (runner-backed predicate evaluation; PR #736) — first batch as **`data` declarations** in real `.dag` modules. The former `t_pb_b_1_tests_dag_smoke_test` compile-only harness is retired (redundant). Further Rust-integration-test deletion per inventory remains gated on Testgen (see *Decisions log* in `docs/briefs/r1-testgen-manager.md`).
 
@@ -99,7 +99,6 @@ Paths are modules under `src/v3/compiler/tests/` unless noted. Primary classific
 | `sg3_surface_reflection_consumer_test` | Pipeline | D + G | |
 | `sg6_hand_authored_census_test` | Meta | A | |
 | `sg7_prep_variant_payload_freshness_test` | Pipeline / prep | D + G | |
-| `t_pb_b_brief_d_fixture_smoke_test` | Fixture host | A | Intentionally thin: only verifies Brief D `.v3` fixtures compile. |
 | `t_pb_b_1_dag_runner_test` | T-PB-B-1 `tests/dag/` host | A + D | Runner-backed; former `t_pb_b_1_tests_dag_smoke_test` **retired** (redundant). |
 | `thesis_parallelism_test` | Contract (thesis) | D + G | |
 | `thesis_validation_test` | Contract (thesis) | D + G | |

docs/r3-program-plan.md

@@ -297,7 +297,7 @@ This principle is NOT a separate lane; it's a per-lane gate-shape requirement ap
 | 71 | `v3_self_host_demonstration` | demonstration | T-V2-Retirement | DECLARED (NEW 2026-05-06) | bootstrap PB-Runtime trampoline runs end-to-end |
 | 72 | `e_p_producer_demonstration` | demonstration | T-E-P-Producer-Broadening | **CONSUMER_LANDED** — integration `e_p_producer_demonstration` (`m2_substrate_inhabitance_test.rs`) | unary recursive self-call: `SubValueRelation` + scalar `per_call_pattern_at` → `lower_call_pattern` / `DescentEvidence::Strict` (multi-arg per-port vectors: other E-P tests) |
 | 73 | `lens_behavioral_parity_demonstration` | demonstration | T-Lens-Behavioral-Parity | DECLARED (NEW 2026-05-06) | **R3 (post-carve-promotion 2026-05-09):** all 4 lenses (complexity + cost + parallelism + effect_enum) vs frozen v2-oracle snapshot. Parallelism + effect_enum **R3-load-bearing within Cluster F** per Director carve-promotion ratification at gunbc#846 c#4412330468 (prior R4-carved status DISSOLVED). |
-| 74 | `tests_as_data_demonstration` | demonstration | T-Tests-As-Data-Completeness | **CONSUMER_LANDED + PASSING** — one-cell `.dag` carrier `src/v3/compiler/tests/dag/t_r3_tests_as_data_demonstration.dag` ports Rust integration test `t_pb_b_brief_d_pipeline_smoke_fixture_lowers_cleanly` to `TestClaim` (`Compiles`) and executes through `TestRunner` via `r3_tests_as_data_demonstration_suite_passes_through_runner` | Demonstration only; gate #84 owns bulk Rust-test port coverage |
+| 74 | `tests_as_data_demonstration` | demonstration | T-Tests-As-Data-Completeness | **CONSUMER_LANDED + PASSING** — one-cell `.dag` carrier `src/v3/compiler/tests/dag/t_r3_tests_as_data_demonstration.dag` ports the retired Rust integration test `t_pb_b_brief_d_pipeline_smoke_fixture_lowers_cleanly` to `TestClaim` (`Compiles`) and executes through `TestRunner` via `r3_tests_as_data_demonstration_suite_passes_through_runner` | Demonstration only; gate #84 owns bulk Rust-test port coverage |
 | 75 | `pr_anticipation_discipline_ci_active` | CI-discipline | R3 Debt-Paydown (standing) | **PASSING** — CI job runs `scripts/check-pr-sg0-net-shrink-discipline.sh --self-test` and PR-body enforcement before bootstrap verify | landed by PR #1807; tightened by PR #2335 + PR #2361; local self-test re-verified 2026-05-10 |
 | 76 | `e_p_per_call_descent_evidence_full_coverage` | substrate-shape | T-E-P-Producer-Broadening | **CONSUMER_LANDED** (PR #2147 carrier + PR #2190 consumer; refresh per cluster-analysis audit §1) | per-call DescentEvidence covers all live call sites |
 | 77 | `e_p_call_pattern_lookup_authoritative` | substrate-shape | T-E-P-Producer-Broadening | **CONSUMER_LANDED** — integration `e_p_call_pattern_lookup_authoritative` (`m2_substrate_inhabitance_test.rs`) pins `per_call_pattern_at` as the lens-facing query over the per-call evidence authority | CallPattern lookup authoritative |

src/v3/compiler/tests/dag/README.md

@@ -8,7 +8,7 @@ This directory holds **landed** v3 `.dag` modules that declare `TestClaim` / `Te
 
 - **Landed (runner path):** `t_pb_b_1_dag_runner_test` — `lower` keeps the empty-harness-diagnostics compile receipt for each on-disk `tests/dag/*.dag` file, then `TestRunner::run_suite` proves line-item (1) of the pre–Rust-deletion checklist in `docs/briefs/r1-testgen-manager.md`. The former standalone `t_pb_b_1_tests_dag_smoke_test` is **retired** (redundant; see Testgen *Decisions log*). Still not a `pb_*` gate by itself.
 - **Not done here:** Further Rust test deletion or `pb_test_file_generated_from_dag` — follow-on work needs **Testgen** sign-off per the inventory in `docs/briefs/r1-testgen-manager.md`.
-- **Compile-smoke vs `TestRunner` (Brief D vs landed):** **Brief D** `.v3` smoke (`t_pb_b_brief_d_fixture_smoke_test`) only checks that the declaring file lowers with empty **module** diagnostics — that is **not** by itself proof of `Compiles` / `FailsWithDiagnostic` on embedded `TestClaim.source` strings. **Landed** `tests/dag/*.dag` files use the same empty-harness check inside `t_pb_b_1_dag_runner_test::lower`, then `run_suite` evaluates the predicates on the embedded `source` — so `FailsWithDiagnostic` negatives, `PortHasState`, and `CostBounded` bounds are real witnesses, not compile-smoke proxies. See `docs/briefs/t-pb-b-1.md` (*Compile-smoke caveat*).
+- **Compile-smoke vs `TestRunner` (Brief D vs landed):** the retired **Brief D** `.v3` smoke (`t_pb_b_brief_d_fixture_smoke_test`) only checked that the declaring file lowered with empty **module** diagnostics — that was not by itself proof of `Compiles` / `FailsWithDiagnostic` on embedded `TestClaim.source` strings. **Landed** `tests/dag/*.dag` files use the same empty-harness check inside `t_pb_b_1_dag_runner_test::lower`, then `run_suite` evaluates the predicates on the embedded `source` — so `FailsWithDiagnostic` negatives, `PortHasState`, and `CostBounded` bounds are real witnesses, not compile-smoke proxies. See `docs/briefs/t-pb-b-1.md` (*Compile-smoke caveat*).
 
 ## Post-R2 residuals (unchanged)
 

src/v3/compiler/tests/dag/t_r3_tests_as_data_demonstration.dag

@@ -1,6 +1,6 @@
 // R3 gate #74 -- tests_as_data_demonstration.
 //
-// Port target: Rust integration test
+// Port target: retired Rust integration test
 // `t_pb_b_brief_d_pipeline_smoke_fixture_lowers_cleanly`
 // (`src/v3/compiler/tests/integration/t_pb_b_brief_d_fixture_smoke_test.rs`).
 //

src/v3/compiler/tests/integration.rs

@@ -223,8 +223,6 @@ mod t_las_complexity_contract_compile_error_test;
 mod t_las_crdt_cost_basis_demo_test;
 #[path = "integration/t_pb_b_1_dag_runner_test.rs"]
 mod t_pb_b_1_dag_runner_test;
-#[path = "integration/t_pb_b_brief_d_fixture_smoke_test.rs"]
-mod t_pb_b_brief_d_fixture_smoke_test;
 #[path = "integration/tc1_substrate_lens_eta_equivalence_deferred_test.rs"]
 mod tc1_substrate_lens_eta_equivalence_deferred_test;
 #[path = "integration/tc1_substrate_lens_eta_equivalence_strict_fire_test.rs"]

src/v3/compiler/tests/integration/sg0_census_test.rs

@@ -643,7 +643,6 @@ const EXPECTED_HAND_AUTHORED_TEST: &[&str] = &[
     "src/v3/compiler/tests/integration/t_las_complexity_contract_compile_error_test.rs",
     "src/v3/compiler/tests/integration/t_las_crdt_cost_basis_demo_test.rs",
     "src/v3/compiler/tests/integration/t_pb_b_1_dag_runner_test.rs",
-    "src/v3/compiler/tests/integration/t_pb_b_brief_d_fixture_smoke_test.rs",
     // TC1 substrate lens eta-equivalence (deferred / R2 research): integration for
     // `SubstrateResearchDeferredClaim` + `tc1_substrate_lens_eta_equivalence_deferred.dag`.
     // SG-0 path ratchet: Director sign-off (gunb-ai/gunbc#1130, comment 4341571168;

src/v3/compiler/tests/integration/t_pb_b_1_dag_runner_test.rs

@@ -153,8 +153,8 @@ fn t_pb_b_1_execute_command_boundary_suite_passes_through_runner() {
 /// R3 gate #74 — one Rust integration test ported to `.dag` `TestClaim` data and
 /// executed end-to-end through `TestRunner`.
 ///
-/// Port target: `t_pb_b_brief_d_pipeline_smoke_fixture_lowers_cleanly`
-/// (`t_pb_b_brief_d_fixture_smoke_test.rs`). The original Rust test asserts the
+/// Port target: retired `t_pb_b_brief_d_pipeline_smoke_fixture_lowers_cleanly`
+/// (`t_pb_b_brief_d_fixture_smoke_test.rs`). The original Rust test asserted the
 /// pipeline smoke fixture lowers cleanly; this carrier expresses the same
 /// surface as a `Compiles` claim over the embedded subject program.
 #[test]