Add reconnect state retention QA gate

Docs/QA/MvpQaGates.md

@@ -179,3 +179,28 @@ Required evidence:
 
 This gate is gameplay/server-relevant and should be covered by the next server
 package deployment.
+
+## Reconnect State Retention
+
+The reconnect state retention gate proves a player can disconnect, reconnect,
+and recover the MVP state that matters for a continuing survival session instead
+of starting over from a blank pawn.
+
+Required evidence:
+
+- `AAgrarianGameGameMode::Logout` captures a player snapshot before the pawn is
+  released.
+- `AAgrarianGameGameMode::RestartPlayer` restores a matching snapshot after the
+  normal MVP spawn path.
+- `UAgrarianPersistenceSubsystem::SavePlayerSnapshot` and
+  `RestorePlayerSnapshot` preserve transform, safe player identity, survival,
+  care history, and inventory.
+- Inventory restore uses `RestoreSavedItems` so derived carry weight and
+  inventory listeners refresh after reconnect.
+- If no matching snapshot exists, the player falls back to the normal MVP spawn
+  point instead of failing the join.
+- The manual two-client test records reconnect evidence alongside world
+  time/weather consistency.
+
+This gate is server-relevant and must be rechecked after multiplayer package
+deployment.