README updates:
- Full repository tree structure (was outdated skeleton)
- Added Message Protocol namespace summary (NATS)
- New ADR section with link to ADR-001
- Added nyx-substrate to related projects
- New philosophy: "Infrastructure is geology, models are weather"
- Version bump 5.0 → 6.0
ADR-001 captures Silvester interview decisions:
- Single NATS bus with dev/staging namespaces
- Staged schema versioning with topic separation
- Echo agent first (YAGNI principle)
- MCP Server with heartbeat-based subscription delivery
🎆 Silvester 2025 edition
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
