[validation] attach-at-creation proof — SBOM on an immutable release
Pre-release
Pre-release
Immutable
release. Only release title and notes can be modified.
Demonstrates that a CycloneDX SBOM attached in the gh release create command survives on an IMMUTABLE release — the fix for PR #626. Not a real release; safe to delete after review. Tag is intentionally non-v* so it does not trigger the current SBOM workflow.