Add server restart shelter persistence QA gate

Docs/QA/MvpQaGates.md

@@ -204,3 +204,28 @@ Required evidence:
 
 This gate is server-relevant and must be rechecked after multiplayer package
 deployment.
+
+## Server Restart Shelter Persistence
+
+The server restart shelter persistence gate proves a placed primitive shelter is
+not merely a runtime actor. It must be captured into the world save, restored by
+the server on startup, and remain available for weather protection after a
+restart.
+
+Required evidence:
+
+- `AAgrarianShelterActor` owns a persistent actor component with
+  `ActorTypeId = primitive_shelter`.
+- The game mode registers `primitive_shelter` with the persistence subsystem
+  before loading current world state.
+- `SaveCurrentWorld` captures world actors and `LoadCurrentWorld` restores
+  registered world actors.
+- Server startup uses `bLoadWorldOnServerStart`, checks `DoesSaveExist`, and
+  calls `LoadCurrentWorld` without clearing existing map actors.
+- Shelter weather-protection verification remains tied to the restored shelter
+  actor.
+- A release smoke run should place a shelter, save, restart the server, and
+  confirm the shelter remains at the same transform.
+
+This gate is server-relevant and must be rechecked after the final 0.1.Q server
+package/deploy if server code or package contents changed.