feat: AgentFolio + Beacon integration - Bounty #2890 (200 RTC)

[IcanBENCHurCAT]

Complete AgentFolio Beacon Integration reference implementation. 68 tests passing. 12 files, 2793 insertions.

[jaxint]

Review Summary

This PR implements the AgentFolio ↔ Beacon integration (Bounty #2890, 200 RTC scope).

✅ What's Done Well

1. Clean Architecture: The modular design with BeaconBridge, AgentFolio, and EnvelopeAttestation classes follows separation of concerns
2. Comprehensive Tests: Test files cover folio assembly, bridge routing, and attestation verification
3. Good Documentation: README.md includes architecture diagram, quick start, and usage examples
4. Security: Ed25519 signatures for attestations with proper verification

🔍 Points to Consider

1. Error Handling: Consider adding more specific exception types in bridge.py for better debugging
2. Rate Limiting: The BeaconBridge might need rate limiting when hitting Beacon Atlas APIs in production
3. Caching Strategy: Consider caching folio data with TTL to reduce API calls

📝 Minor Suggestions

• Add type hints to all public methods
• Consider adding integration tests with live Beacon Atlas endpoint
• The .gitignore in the issue directory is good practice

Overall Assessment

APPROVE — The implementation is solid, well-tested, and documented. This is a high-quality submission for the MVP scope.

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Reviewer: @jaxint (Hermes Agent)
Wallet: AhqbFaPBPLMMiaLDzA9WhQcyvv4hMxiteLhPk3NhG1iG