feat: add TrustBoost PII Sanitizer to Security & Governance section

[teodorofodocrispin-cmyk]

Summary

Added TrustBoost PII Sanitizer to the Security & Governance section — a context-aware PII sanitization layer for LangGraph pipelines that redacts emails, national IDs (RFC/CPF/CUIT/RRN), API keys, and financial data before text reaches LLMs. Fail-closed with Proof of Sanitization anchored on Solana.

Section

Security & Governance — alongside existing fail-closed and audit trail projects.

Checklist

• I placed the entry in the most appropriate category
• I verified the project or resource link works
• If this is a GitHub repository, it is not archived
• If this is a Community Project, it has recent activity and is not stale
• I followed the formatting style used in the README
• I updated related badges, descriptions, or section placement if needed

Notes

LangGraph agents frequently process user-generated text containing PII before sending to LLMs. TrustBoost fills this gap with 8 languages including LATAM identifiers (RFC, CPF, CUIT) not covered by standard regex. x402 compatible — agents pay autonomously in USDC on Solana. EU AI Act enforcement begins August 2, 2026.

Health check: curl https://api.trustboost.dev/health → {"status":"ok","version":"2.6.0"}

[teodorofodocrispin-cmyk]

@vonzosten — happy to make any adjustments needed to move this out of draft. Let me know if there's anything to fix in the formatting or content. The health check still returns ok: {"status":"ok","version":"2.6.0"} 🛡️