Proof of Process: VDF Proof Aggregation Extension

This document defines optional mechanisms for aggregating Verifiable Delay Function (VDF) proofs in Proof of Process Evidence packets. Aggregation enables O(1) or O(log n) verification of entire checkpoint chains that would otherwise require O(n) sequential VDF recomputation. This extension supports Merkle tree aggregation and SNARK-based proof compression for high-volume verification scenarios.