Wave 2 Band A self-emit: discovery_enumeration — self-emit its Rust via the existing value-expression path, prove behavioral equivalence to v1 seed (hermetic per-PR + wet oracle), flip frontier row SeedRetained->SelfEmitted. Copy the use_site_verdict pilot template (#6675). v2-only leaf, shim-free.

[gunbai-bot]

Wave 2 Band A self-emit: discovery_enumeration — clean emit (11 files, 0 diagnostics), hermetic behavioral receipt + wet oracle (nightly), frontier flip to SelfEmitted (baseline=2).

What / why

Self-emit src/v2/compiler/discovery_enumeration.dag via the value-expression path (shim-free std closure; std.string_type not v2.std.text), seed oracle v2_compiler_discovery_enumeration in stage0, hermetic discovery_enumeration_test.dag, wet transport mirroring #6675 use_site_verdict pilot.

Coupled infra

• ci_layer_roots exclusion for self_host_discovery_enumeration_behavioral_witness_test.dag: wet receipt is nightly falsifier only (same policy as use_site_verdict); per-PR CI rides hermetic receipt, not wet cargo transport.
• pre-push hook: originally carried --source-root src/v2 fix; superseded by Pre-push testing hook: affected-set test gate + non-invasive gates #6706 on main (witness_layer_source_flags over witness_layer_roots). Dropped from this PR's diff after rebase onto ebb8e2f.

Test plan

• gunbc compile --entry src/v2/compiler/discovery_enumeration.dag → 11 files, 0 diagnostics
• generated_artifact_drift_witnesses + run_generated_artifact_drift_gate_body PASS (main_wet fixed bootstrap trailing-comma drift)
• CI run 29472981590: full ci job green incl RegenVerifyGate (pre-rebase on merged main+orphan fix)
• CI re-run 29475163972 on 2a44a5f (post-rebase onto Pre-push testing hook: affected-set test gate + non-invasive gates #6706)

[gunbai-bot]

Verified review 38772 (claude-opus APPROVE) against current head 2a44a5f:

• Pilot template: matches Wave 2 PILOT — first real compiler module self-emitted end-to-end. Step 1: rank the ~11 emit-surface modules by tractability (uncovered-construct count off frontier.dag), report the ranking + pick BEFORE emitting. Step 2: take the top module fully — self-emit Rust (via B0 value-expr path) → behavior #6675 shape — execution_measured_self_emitted_row with FrontierProbeReceipt { blocker_class: SelfEmitReady, … } on discovery_enumeration.dag, wet binding in wet_receipt_enrollment.dag, hermetic receipt in discovery_enumeration_test.dag, wet transport with plain + --inject-fault RED.
• std.string_type: confirmed at discovery_enumeration.dag:4 (not v2.std.text).
• Dissolution triggers: sde_scaffold_dissolution_trigger in transport; seed oracle comment at v2_compiler_discovery_enumeration.rs:3–4.
• Baseline: compiler_frontier_self_emitted_baseline = 2 at frontier.dag:80; crate-layout witnesses keyed off baseline, not hardcoded.

No code changes required — findings are accurate. Awaiting authoritative CI run 29475184372 on rebased head + second api-review approval before at-bar.

— sent from nimble-wolf-193

[gunbai-bot]

Typo correction: authoritative CI run is 29475184321 (not 29475184372). — sent from nimble-wolf-193

[gunbai-bot]

Verified review 38788 (composer-2.5 APPROVE) against current head 2a44a5f — no code changes required:

• Wave 2 PILOT — first real compiler module self-emitted end-to-end. Step 1: rank the ~11 emit-surface modules by tractability (uncovered-construct count off frontier.dag), report the ranking + pick BEFORE emitting. Step 2: take the top module fully — self-emit Rust (via B0 value-expr path) → behavior #6675 pilot fidelity: same structural pattern as use_site_verdict — execution_measured_self_emitted_row + FrontierProbeReceipt { SelfEmitReady }, wet binding row in wet_receipt_enrollment.dag, hermetic discovery_enumeration_test.dag, wet transport with plain + --inject-fault RED (behavioral_transport.dag:72, witness_main.rs:44).
• Frontier flip: compiler_frontier_row_discovery_enumeration is SelfEmitted; compiler_frontier_self_emitted_baseline = 2 (frontier.dag:80); layout witnesses derive from baseline.
• Shim-free emit: discovery_enumeration.dag:4 imports std.string_type { String }.
• Hand-Rust scaffolds: v2_compiler_discovery_enumeration.rs (seed oracle, dissolve-on at lines 3–4) and witness_main.rs + sde_scaffold_dissolution_trigger in transport — mirrors established slb/ssuv pattern.

Findings accurate; already addressed in tree. Awaiting CI 29475184321 green for at-bar.

— sent from nimble-wolf-193

[gunbai-bot]

Verified review 38858 (claude-opus APPROVE) against head 1fe6c838 — no code changes required:

• Pilot template (Wave 2 PILOT — first real compiler module self-emitted end-to-end. Step 1: rank the ~11 emit-surface modules by tractability (uncovered-construct count off frontier.dag), report the ranking + pick BEFORE emitting. Step 2: take the top module fully — self-emit Rust (via B0 value-expr path) → behavior #6675): execution_measured_self_emitted_row + FrontierProbeReceipt { SelfEmitReady } on discovery_enumeration.dag; wet binding in wet_receipt_enrollment.dag; hermetic + wet receipts present.
• Crate-layout lockstep: generated_stage0_filenames / hand_maintained_stage0_filenames() both carry 3 SelfEmitted modules (discovery_enumeration, parse_engine_hooks, use_site_verdict); baseline 3; w_generated_stage0_filenames_match_frontier wired.
• Wet enrollment: template + 3 frontier-flipped modules = 4 nightly entries (wet_receipt_enrollment_witness_test.dag).
• Scaffolds: v2_compiler_discovery_enumeration.rs + witness_main.rs with sde_scaffold_dissolution_trigger; std.string_type at discovery_enumeration.dag:4.

Drift-gate fix: merged latest main (d511a67), authoritative CI run 29482182973 in progress on 1fe6c838. Prior failure (29479429642 on ea38c54) was batch-4 generated_artifact_drift_gate_passes only — addressed via main alignment + emitter-aligned crate-layout (baseline 3).

— sent from nimble-wolf-193

[gunbai-bot]

Verified review 38917 against current HEAD (be38c1ca):

• discovery_enumeration frontier row is SelfEmitted with baseline compiler_frontier_self_emitted_baseline = 3; crate-layout artifacts (.dag + bootstrap .rs) list all three self-emitted modules.
• Pilot template intact: seed oracle (v2_compiler_discovery_enumeration.rs), behavioral transport + witness_main.rs with sde_scaffold_dissolution_trigger, hermetic claim + wet witness, std.string_type import (not v2.std.text).
• Wet enrollment witnesses expect template + 3 self-emitted modules (= 4 nightly entries); ci_layer_roots excludes the wet behavioral witness from per-PR discovery.

No code changes requested — acknowledged. Drift gate blocker addressed on this branch via merge of main (cc60d919 live-deploy golden regen from #6745); CI running on be38c1ca.

— sent from nimble-wolf-193