Rig: game module bay with damped, capped effects

The rig gets the game's universal module bay (module adjacency included).
The machine's summed performance, efficiency and quality percentages are
divided by 4, like the ratios vanilla machines use, and capped: hashrate
at most +20%, power saving at most 25%, card wear at most -30%. Performance
also raises wear and burn-out chance by the same amount; negative
efficiency (overclock module, neural cores) raises power draw. Replaces the
planned mod-specific overclock module. Tested in game.

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

src/Decentralized/Session.cs

@@ -37,7 +37,7 @@ namespace Decentralized
         public static SaveData Data;
 
         /// <summary>今晚有电的矿架上的显卡（矿架在夜间早段扣电时登记，结算时用）。</summary>
-        public static readonly List<GameItem> TonightCards = new List<GameItem>();
+        public static readonly List<KeyValuePair<GameItem, ModuleBonus>> TonightCards = new List<KeyValuePair<GameItem, ModuleBonus>>();
         public static int TonightRigs, TonightPoweredRigs;
         public static double TonightKj;