EngineeringSpec 0.1.0-rc.16

Added

• Explicit replay simulations for historical review and finish readiness using one immutable Git snapshot for configuration, EngineeringSpecs, ProductSpecs, and repository-local references.
• Optional exact-path engineering-authority-controls for independently approved, subtractive maintenance sequencing.
• Deterministic ceremony benchmark scenarios A–G and machine-readable historical replay and ceremony schemas.

Changed

• Routing, review, preparation, catalogue, status, and authority-diff reports expose stable sequencing identities and outcomes without executable runner payloads.
• next reports deterministic remediation recommendations for work, approval, ambiguity resolution, historical replay, and finish.

Security

• Historical replay always reports historical_read_only and currentAuthorityGranted: false; it cannot write, transition lifecycle state, inspect mutable Git state, or execute runners or trusted verifiers.
• Maintenance sequencing can only subtract a pinned positive claim on an exact path also writable by the trusted controller. Denials and remaining ambiguity continue to fail closed.
• Workspace-only, stale, broad, duplicated, chained, cyclic, competing, and self-authorizing controls have no authority effect and fail closed.