docs: mark simulation state phase complete

docs/decisions/0001-simulation-authority-boundary.md

@@ -44,10 +44,10 @@ random streams, and no dependency on a loaded gameplay scene.
 
 ## Staged migration
 
-1. Add a deterministic clock, seeded random source, and scenario runner.
-2. Introduce serializable village, NPC, and resource-state records.
-3. Bind `ResourceNode` presentation to resource records instead of owning
-   authoritative amount and reservation.
+1. ✅ Add a deterministic clock, seeded random source, and scenario runner.
+2. ✅ Introduce serializable village, NPC, and resource-state records.
+3. **Next:** Bind `ResourceNode` presentation to resource records instead of
+   owning authoritative amount and reservation.
 4. Move target choice and reservation coordination out of
    `WorldViewManager` into an action/target system with an active-world query
    adapter.
@@ -55,6 +55,9 @@ random streams, and no dependency on a loaded gameplay scene.
 6. Add versioned save/load before inventories, schedules, or relationships
    substantially expand mutable state.
 
+Schema v1 and its deterministic continuation contract are documented in
+[the simulation state schema](../SIMULATION_STATE_SCHEMA.md).
+
 ## Consequences
 
 - Some current prototype APIs are transitional and should not be generalized