refactor: clarify simulation ownership

docs/LEARNING_ROADMAP.md

@@ -29,9 +29,8 @@ Each milestone should produce five outcomes:
 Do not advance because files exist. Advance when the exit test passes.
 
 The current implementation has completed ResourceNode migration through player
-parity plus the minimal Jajce scaffold and navigation proof. The architecture
-gate below is now active and must pass before beauty production or broader
-simulation features. See
+parity, the Jajce scaffold/navigation proof, and the mandatory architecture
+gate below. See
 [ADR 0001](decisions/0001-simulation-authority-boundary.md).
 
 ## Mandatory architecture gate
@@ -660,6 +659,12 @@ The practical next sequence is:
 
 Recently completed:
 
+- Simulation responsibility cleanup: storage/inventory transactions now live
+  in `VillageEconomy`, ordered history and rate queries live in
+  `SimulationEventLog`, and `SimulationManager` exposes a shorter tick
+  lifecycle while remaining the scene-tree façade. Dead prototype APIs and
+  unused scene artifacts were removed, with the ownership map documented in
+  `ARCHITECTURE_OVERVIEW.md`.
 - `F10` cinematic/debug presentation toggle that hides development UI, world
   labels, and NPC name/profession labels without changing simulation state;
 - `F12` repeatable simulation-garden demo reset by reloading the current scene