Establish governance docs as canonical repo context

docs/00-governance/roadmap.md

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+# Roadmap
+
+## Sprint 2 (Active): SIM Validation
+- Validate dual-leg execution behavior with log evidence.
+- Complete remaining safety/consistency fixes tied to active gap list.
+- Exit criteria: stable SIM behavior with no unresolved critical gaps.
+
+## Sprint 3: Production Hardening
+- Implement CI build/test automation and operational alerting.
+- Complete lower-priority runtime consistency and observability improvements.
+- Add walk-forward and broader validation coverage beyond in-sample checks.
+
+## Sprint 4: Live Capital Readiness
+- Gate on sustained SIM metrics and drawdown controls.
+- Introduce go-live runbook and operational controls for controlled capital exposure.
+
+## Sprint 5: ML Extension (Deferred)
+- Add inference integration only after sufficient live/sim data and stable production operations.
+
+## Sequencing Rule
+- No feature expansion ahead of unresolved safety and validation gates.