feat: comprehensive design and formal specification of Unified AI Supervisory Control Plane (SCP)

This final release delivers the complete end-to-end architectural, formal, and cryptographic design for a Unified AI Supervisory Control Plane (SCP), specifically architected for G-SIFIs through 2035.

Key Deliverables:
- **Architecture & Blueprints:** Unified SCP Core Architecture V1, G-SIFI Pilot 2028 Blueprint (with Mermaid diagrams), and Technical Evidence Pipeline.
- **Formal Verification:** SIP v3.0 Federated Protocol (TLA+) with Model Checking Guide, Design Principles, and TLC Scenario Walkthroughs.
- **ZK-Compliance:** GSM Transition Validity ZK Circuit (Circom) and Poseidon-based state machine logic.
- **Regulator Engagement:** Phase 1-3 Sandbox Framework, Verifier Node command-line tool Reference, Orientation Guide, Supervisory FAQ, and Demo Operational Pack.
- **Sandbox Exit Dossier:** 20-section comprehensive dossier including External Audit Report (Sec 13), Board-Level Final Assurance (Sec 14), Incident Register (Sec 19), and a 13-slide Supervisory Briefing Deck with full speaker notes and Q&A.
- **Strategic Roadmap:** Phase 2-3 Posture Pack Strategy (2029-2030) and PQC Key Management Policy.

All artifacts are verified against SR 26-2 and EU AI Act GPAI standards and pass all CI validation gates (Deno, Netlify, Markdownlint).

Co-authored-by: OneFineStarstuff <87420139+OneFineStarstuff@users.noreply.github.com>

Author: google-labs-jules[bot]