Secure Bench v0.2.1

Secure Bench 0.2.1 stabilizes prospective historical-integrity verification.

Highlights:

• Anchors the immutable Phase 0-11 baseline to commit 86aa6f4.
• Protects 2,403 files across 14 closed roots plus 26 individually protected files.
• Keeps mutable governance and prospective namespaces outside the frozen historical boundary.
• Fails closed on mutation, deletion, conflicting additions, symlink substitution, malformed manifests, overlap, and path traversal.
• Adds Phase 12 to the six-workspace GitHub Actions matrix.

Secure Bench v0.2.0, its signed tag, published artifacts, Evidence Contract v2, taxonomy 1.0.0, and the official Phase 10 result remain unchanged.

No scanner result, ranking, production-readiness assessment, superiority claim, or complete-coverage guarantee is included.