proof-composer: System-Wide Proof Validation (DEPLOYMENT GATE)

Purpose

Validate entire engineering proof chain and authorize deployment. This is the final deployment gate - nothing deploys without a valid composed proof.

Key insight: Each skill generates local proofs. proof-composer verifies they compose into a valid system-wide proof.

Process:

1. Collect all proofs (architecture, backend, frontend, infrastructure)
2. Verify version consistency (all use same spec version)
3. Validate proof chain (architecture → backend → standardization → frontend → infrastructure)
4. Check for gaps (missing proofs, incomplete verification)
5. Generate composed proof certificate (authorizes deployment)

Position in Engineering Layer