Tiers drive physical traits and serial checks; guide item

Fans (1/2/3/3) and power connectors (6/8/8/8+8) follow the real chip's tier,
so a fake shows its real tier physically. Serial numbers (brand prefix, tier
code, factory code, four digits) are drawn on the sticker from card state;
the label bar gets power-and-fans and serial rows, eight in total, with a
framed panel. A graphics card appraisal guide item holds the rules.

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

src/Decentralized/Unlock.cs

@@ -33,6 +33,7 @@ namespace Decentralized
             Items.Give(ModHelper.SpawnItem(Items.Terminal));
             Items.Give(ModHelper.SpawnItem(Items.Rig));
             Items.Give(ModHelper.SpawnItem(Items.GpuId("RZX60")));
+            Items.Give(ModHelper.SpawnItem(Items.Guide));
             Log.Info("已加入 Web3 治理社区");
         }
     }