旧存档的假卡补上风扇数、供电口破绽

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

src/Decentralized.Domain/CardLook.cs

@@ -63,6 +63,19 @@ namespace Decentralized.Domain
         /// <summary>六位数字，存在物品标签上：风扇、金手指、挡板、丝印、封条、序列号。</summary>
         public string Encode() => $"{Fan}{Fingers}{Bracket}{Print}{Sticker}{Serial}{CountBad}{PinBad}";
 
+        /// <summary>
+        /// 旧版存档的外观只有 5 或 6 位（没有风扇数、供电口两位）：旧规则里假卡的风扇数和供电口只要档次不同就一定对不上。
+        /// 这里按旧规则补上，旧存档里的假卡仍然露出同样的破绽。新格式（8 位）不动。
+        /// </summary>
+        public static CardLook Legacy(string encoded, CardLook look, string label, string chip)
+        {
+            if (encoded == null || encoded.Length >= 8 || string.IsNullOrEmpty(chip) || chip == label) return look;
+            var l = Hardware.Specs[label]; var c = Hardware.Specs[chip];
+            look.CountBad = Hardware.FanCount[l.Tier] != Hardware.FanCount[c.Tier] ? 1 : 0;
+            look.PinBad = Hardware.PinClass[l.Tier] != Hardware.PinClass[c.Tier] ? 1 : 0;
+            return look;
+        }
+
         public static CardLook Decode(string s)
         {
             if (s == null || s.Length < 5 || s.Length > 8) return default;

src/Decentralized/Items.cs

@@ -355,7 +355,11 @@ namespace Decentralized
             if (item.IsTag(FakeTag)) u.FakeOf = item.GetTagReadonly(FakeTag).GetString();
             u.Refurbished = item.IsTag(RefurbTag);
             u.Dead = item.IsTag(DeadTag);
-            if (item.IsTag(LookTag)) u.Look = CardLook.Decode(item.GetTagReadonly(LookTag).GetString());
+            if (item.IsTag(LookTag))
+            {
+                var enc = item.GetTagReadonly(LookTag).GetString();
+                u.Look = CardLook.Legacy(enc, CardLook.Decode(enc), u.Model, u.FakeOf);   // 旧存档的假卡补上风扇数、供电口破绽
+            }
             // 外观种子：没有记录的卡（正规渠道的新卡）用物品编号当种子，之后同样随损耗变旧
             u.Look.Seed = item.IsTag(SeedTag) ? (uint)item.GetTagReadonly(SeedTag).GetInt() : (uint)(item.uniqueId * 2654435761u) | 1u;
             return u;

tests/Decentralized.Domain.Tests/Program.cs

@@ -468,6 +468,24 @@ internal static class Program
             Check(new[] { CardLabels.RowCount, CardLabels.RowPin, CardLabels.RowPrint, CardLabels.RowSerial }.All(r => gs.Get(r) == gt.Get(r)), "真卡四项依据全部符合");
         });
 
+        Test("旧存档兼容：6 位旧外观的假卡补上风扇数、供电口破绽，真卡和新格式不动", () =>
+        {
+            var old = CardLook.Decode("000000");
+            var fake = CardLook.Legacy("000000", old, "RTX90", "RTX60");
+            var u = new Unit { Model = "RTX90", FakeOf = "RTX60", Health = 80, Look = fake };
+            Check(fake.CountBad == 1 && fake.PinBad == 1 && u.ObservedCount == 1 && u.ObservedPin == 0, "旧版的低档冒充高档：风扇数和供电口都对不上");
+            var claim = new Claim { Model = "RTX90" };
+            Check(claim.Get(CardLabels.RowCount) != Claim.Truth(u).Get(CardLabels.RowCount) && claim.Get(CardLabels.RowPin) != Claim.Truth(u).Get(CardLabels.RowPin), "说成标称型号时两项依据都与实物不符");
+            var sameCount = CardLook.Legacy("000000", old, "RTX80", "RTX60");
+            Check(sameCount.CountBad == 1 && sameCount.PinBad == 1, "RTX 80 冒充：风扇数 3 对 1、供电口 8 针对 6 针都不同");
+            var same = CardLook.Legacy("000000", old, "RTX80", "RX800");
+            Check(same.CountBad == 0 && same.PinBad == 0, "档次相同（风扇数、供电口一样）的假卡补不出破绽，也不会误加");
+            Check(CardLook.Legacy("000000", old, "RTX90", null).CountBad == 0, "真卡不动");
+            var newer = new CardLook { CountBad = 0, PinBad = 1, Print = 2 };
+            Check(CardLook.Legacy(newer.Encode(), CardLook.Decode(newer.Encode()), "RTX90", "RTX60").CountBad == 0, "新格式（8 位）不再补");
+            Check(CardLook.Decode(newer.Encode()).PinBad == 1 && CardLook.Decode("012012").Fan == 0 && CardLook.Decode("01201").Sticker == 1 && CardLook.Decode("01201").Serial == 0, "新旧格式都能读");
+        });
+
         Test("外观随损耗重算：越旧外观越差；种子固定；算力受风扇与金手指影响", () =>
         {
             var rng = new Rng(5);