Delivered: observability, deterministic eval/replay, tool gating, MCP integration, and routing explainability.

Key accomplishments:
- Correlation-aware observability with metrics and trace export
- Deterministic eval suite with replay/compare and CLI parity
- ToolGate policy enforcement with audit hooks and HITL approvals
- MCP multi-server integration with namespaced tools/resources
- Routing explanations with confidence and alternatives

See .planning/MILESTONES.md for details.