[EPIC] Protocol Versioning & Backward Compatibility

### Problem Statement
Our blockchain protocol lacks version management, creating breaking changes when core components evolve. Changes to business logic invalidate zkVM verification programs, while serialization format changes break data parsing. This forces full nodes to maintain multiple artifact versions and prevents seamless protocol upgrades.

### Impact
Full nodes cannot verify complete blockchain history with single artifact set
Client applications break on serialization changes
Users must manually track which zkVM programs validate which proofs
Protocol updates require coordinated hard forks

### Scope
Implement versioning strategy for zkVM programs, data serialization formats, and provide backward-compatible parsing mechanisms.