Barter Protocol Lab v2.0.0

Barter is now an honest, deterministic commodity-exchange protocol lab.

Showcase

• three synthetic exchange scenarios with immutable event tapes
• forward, backward, reset, and full-tape replay
• no-login, no-database, no-secret public lab
• distinctive paper-ledger interface and real product capture

Safety boundary

• no real identity-document intake
• no hardcoded administrator or privilege escalation
• no funds, title, token, commodity, blockchain write, or live market data
• all legacy identity, escrow, settlement, and marketplace behavior is labeled simulated

Proof

TypeScript, 4/4 tests, production build, no-DB smoke, focused secret scan, and zero production dependency vulnerabilities passed locally and in GitHub Actions.