New page (docs/state-hub.md) covers:
- Why: the invisible state problem across repos and agents
- What: Derived Data Store, Read Model, Agent Orchestration Layer,
Cross-Repo Observatory — and what it is NOT
- Derived Data Store principle (ADR-003): fingerprint cache, rebuild
guarantee, force-refresh
- Repository Orchestrator: session protocol, cross-domain coordination
via messages + capability routing, Kaizen agents
- Architecture diagram (ASCII), technology choices, data model overview
- Running the hub, design principles, related docs
reference.md: add Architecture & Design section grouping state-hub,
TPSC, GDPR maturity, SCOPE.md, capabilities, and goals docs.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>