Cards: appearance follows wear, hash depends on fan and contacts, seller confrontation

Fan, contact and scratch levels are recomputed from health and a per-card
seed, so a card looks older as it wears. Fan and contacts scale hashrate.
Each inspection-tray detail now maps to exactly one dimension value. Quoting
dealers price the card as if its condition were fine; the player points out
fan, contacts, bracket, print or sticker in the tray to take the matching
discount or expose a fake (a wrong accusation costs reputation like the
vanilla confrontation). Unowned cards show a coarse grade and rated specs.

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

src/Decentralized.Domain/Mining.cs

@@ -86,6 +86,8 @@ namespace Decentralized.Domain
         public bool Refurbished;
         /// <summary>外观；新卡（正规渠道）没有记录，按全新画。</summary>
         public CardLook Look;
+        /// <summary>按当前健康度算出的外观。</summary>
+        public CardLook Appearance => Look.Appearance(Health);
 
         public HardwareSpec Label => Hardware.Specs[Model];
         public HardwareSpec Chip => Hardware.Specs[FakeOf ?? Model];
@@ -94,7 +96,7 @@ namespace Decentralized.Domain
         public double Hash(ModuleBonus b)
         {
             if (Dead) return 0;
-            return Chip.Hash * (Health >= 50 ? 1.0 : 0.6 + 0.4 * Health / 50) * b.Hash;
+            return Chip.Hash * (Health >= 50 ? 1.0 : 0.6 + 0.4 * Health / 50) * b.Hash * Appearance.HashFactor;
         }
 
         public double Kj(ModuleBonus b) => Dead ? 0 : Chip.Kj * b.Kj;
@@ -103,14 +105,14 @@ namespace Decentralized.Domain
         public double DeathChance(ModuleBonus b)
         {
             double p = Tuning.DeathBase + Tuning.DeathWorn * Math.Pow(1 - Health / 100, 2);
-            return p * Label.DeathFactor * (FakeOf != null ? Tuning.FakeDeathFactor : 1) * b.Death * Look.DeathFactor;
+            return p * Label.DeathFactor * (FakeOf != null ? Tuning.FakeDeathFactor : 1) * b.Death * Appearance.DeathFactor;
         }
 
         /// <summary>一夜的损耗与暴毙判定；返回是否在今晚暴毙。</summary>
         public bool Night(ModuleBonus b, Rng rng)
         {
             if (Dead) return false;
-            Health = Math.Max(0, Health - Label.WearFactor * b.Wear * Look.WearFactor);
+            Health = Math.Max(0, Health - Label.WearFactor * b.Wear * Appearance.WearFactor);
             if (rng.Chance(DeathChance(b)))
             {
                 Dead = true;