clean-architecture-frontend-template/docs/security/supply-chain.md

Build and supply-chain gate

Local blocking controls

• pnpm install --frozen-lockfile and a real manifest/lock mismatch fixture
• all direct and transitive lockfile rows with package SHA-512 integrity
• production/development, direct/transitive and platform-optional classification
• package-manifest license allow/deny policy
• approved inventory baseline digest and actual add/remove/change/upgrade diff
• independent review for new direct production dependencies
• CycloneDX 1.6 SBOM and inventory component/edge coherence
• source/lock/SBOM/dist-linked local provenance statement
• source, opt-in recipes, scripts, tests, tracked config/schema, public, built asset and generated release metadata secret scan
• two-build SOURCE_DATE_EPOCH reproducibility check

The canonical commands are:

corepack pnpm verify:lockfile
corepack pnpm verify:reproducible-build
corepack pnpm build:release-candidate
corepack pnpm verify:local-evidence
corepack pnpm check:supply-chain:fixtures

config/security/dependency-baseline.json is the approved local baseline. Changing it requires DEPENDENCY_BASELINE_OWNER and DEPENDENCY_BASELINE_REASON; editing the digest or hardcoding an empty diff is rejected.

External promotion controls

Promotion reads the provider files named by VULNERABILITY_REPORT_PATH and PROVENANCE_ATTESTATION_PATH. The vulnerability report must bind both the exact lockfile digest and candidate distSha256; the provenance attestation must name dist with that same digest. Both documents use strict schemas and Ed25519 signatures verified with separately configured trusted public keys and key IDs.

If either provider input is absent, local verification remains meaningful but artifacts/security/supply-chain-verification.json records promotionStatus: FAIL_UNVERIFIED. verify:provider-evidence and verify:promotion then exit non-zero. Promotion recomputes the candidate file set and digests and never rebuilds it. Scanner or signing outages are not converted to an empty PASS.

Approved vulnerability exceptions require vulnerability/package identity, owner, a different reviewer, reason and expiry. Expired or self-approved exceptions are blocking.