Description
Landing-13 review C1 (codex/loop58/rv13 notes in DECISIONS D190): the Go compiler fuses multiply-add expressions in internal/workload/app/causal_mint.go (about :621, :647, :680, :694, :716, :718) on arm64 but not amd64, so acme-ai-platform’s shipped digest differs by 1 ns between architectures and CI (x86_64) fails while arm64 gate hosts pass. Wrap products in explicit float64() conversions, regenerate the acme digest and pins, and prove the digest test under GOARCH=amd64 in the landing proof.
Acceptance Criteria
- #1 TestShippedBlueprintsDefaultUnchanged passes for acme-ai-platform on arm64 and under GOARCH=amd64
- #2 The landing proof for any causal arithmetic change includes a GOARCH=amd64 digest run
Definition of Done
- #1 just check (fmt-check, lint, gen-check, env-check, docs-check, test, race, hygiene, ui-check, compose-check, helm-test, lab-check, signal-fidelity)
- #2 just gen (only if a blueprint field, construct/workload config struct, or a skill under plugins/synthkit/skills/ changed)
- #3 just dump — inventory diffed against signals/
Implementation Plan
Restore the accepted archived landing stack in an isolated candidate; reproduce architecture-dependent causal timestamps, prevent fused multiply-add at digest-sensitive arithmetic, and retain arm64 plus amd64 digest evidence. Root composes, reviews and gates before landing.
Loop60: senior composes only charter-listed accepted engine/app/Lambda/AgentCore stack over current main without replacing landed database files.
Implementation Notes
Owner closeout: Accepted timestamp/engine split unlanded. Compose with accepted resend parity, retaining engine-only split and excluding held reference migration.
Loop60 closeout: Accepted causal stack through fe995479 retains architecture proof and the repaired shared-exchange identity; not published because integrated app race still exceeds the unchanged 600-second budget. Resume only after owner-authorized evaluator resolution, current-main composition, exact final generation/review/full gate and dual-architecture facts.
Final loop closeout: retained unlanded causal candidateaf34 has native/component review and final CodeRabbit passes, but the exact integrated full gate fails app-race600.139s. No candidate source was pushed or deployed. Preserve task-specific earlier evidence/limits; resume only after the aggregate owner stop and relevant dependency/owner decisions are resolved, with no timeout/assertion/case/isolation reduction or unchanged full-gate retry.