v2026.08.13.16 – v2026.08.13.18 — 2026-08-13

• feat(supply-chain): reproducible builds + checksums, signing-ready (G10)
• docs: whats-new notes (G1 denials, G10 verifiable releases) + doc updates
• chore(changelog): regenerate testing index
• release(supply-chain): publish signed SHA256SUMS to get.enconf.com/checksums (G10)
• build(supply-chain): resolve RELEASE_SIGN_KEY from packaging/.release-sign-key fallback
• chore(changelog): regenerate testing index