ALB-013: provable-contracts knowledge distillation contract

[noahgift]

Gap Description

Knowledge distillation kernel contract with KL divergence falsification tests, property-based probar tests, and Kani bounded model checking harnesses.

Component

provable-contracts (pv)

Severity

High (blocks Phase 4: Teacher Setup)

Acceptance Criterion

• contracts/knowledge-distillation-kernel-v1.yaml at Level 3+ (property-based tests)
• Critical obligations (KD-001 KL non-negativity) at Level 4 (Kani proof)
• pv probar generates passing property tests
• pv kani generates bounded model checking harnesses
• pv audit passes with actual entrenar implementation bound

Contract File

contracts/knowledge-distillation-kernel-v1.yaml (committed)

Key Obligations

• KD-001: KL non-negativity (Level 4)
• KD-002: Temperature scaling invariant (Level 3)
• KD-003: Alpha interpolation bound (Level 3)
• KD-004: Gradient correctness (Level 3)

Spec Reference

§12.2 Contract Registry, §12.3 Contract Workflow