解锁时矿架放进机器区；在干净存档走通三项 Web3 升级

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/Decentralized/Unlock.cs

@@ -41,7 +41,7 @@ namespace Decentralized
         private static void OnPurchased()
         {
             Items.Give(ModHelper.SpawnItem(Items.Terminal));
-            Items.Give(ModHelper.SpawnItem(Items.Rig));
+            Items.GiveToMachineBay(ModHelper.SpawnItem(Items.Rig));
             Items.Give(ModHelper.SpawnItem(Items.GpuId("RTX60")));
             Items.Give(ModHelper.SpawnItem(Items.Guide));
             Items.Give(ModHelper.SpawnItem(Items.Web3Guide));