Implementation seed for ADR-025 Epic C: six security headers middleware
with nonce-based CSP in core-shared/security (Next + TanStack adapters),
fourth conformance channel for rate-limit in core-shared/rate-limit
(IRateLimit + RateLimited brand + multi-budget manifest field +
no-undeclared-rate-limit ESLint rule), CycloneDX SBOM step in
release-please.yml. auth.signIn backfilled as canonical rate-limit
reference. ADR-023 amendment for SBOM captured. Status: approved —
ready for pnpm work decompose.