Trust: improve ERC-8004 and trust-policy documentation and examples #13
Description
Summary
Trust is a key OmniClaw differentiator and needs stronger developer-facing guidance.
Problem
Developers need clearer documentation for:
- what trust checks do
- how allow / hold / block behavior works
- when to use check_trust
- how ERC-8004-style identity fits into payment decisions
Acceptance criteria
- trust explainer is added or improved
- examples show trust-enabled simulate/pay flows
- policy presets are documented clearly
- README and docs link to the trust documentation