almost ready

BlueLaminate/BlueLaminate.EFCore/Entities/Listing.cs

@@ -36,9 +36,12 @@ public class Listing
     /// <summary>"buy_now" or "auction".</summary>
     public string Type { get; set; } = null!;
 
-    /// <summary>Asking price in USD.</summary>
+    /// <summary>Asking price.</summary>
     public decimal Price { get; set; }
 
+    /// <summary>Currency of <see cref="Price"/>. CSFloat lists in USD.</summary>
+    public string Currency { get; set; } = "USD";
+
     /// <summary>When CSFloat says the listing was created.</summary>
     public DateTimeOffset ListedAt { get; set; }
 
@@ -48,7 +51,13 @@ public class Listing
     public int PaintIndex { get; set; }
     public string MarketHashName { get; set; } = null!;
     public string? WearName { get; set; }
-    public decimal FloatValue { get; set; }
+
+    /// <summary>
+    /// Exact float, or null for items with no float at all (e.g. Vanilla knives).
+    /// Null is deliberately distinct from a genuine 0.0 float; a floatless item
+    /// also can't be fingerprinted, so its <see cref="SkinInstanceId"/> stays null.
+    /// </summary>
+    public decimal? FloatValue { get; set; }
     public int PaintSeed { get; set; }
     public bool IsStatTrak { get; set; }
     public bool IsSouvenir { get; set; }
@@ -68,6 +77,15 @@ public class Listing
     public int? SkinId { get; set; }
     public Skin? Skin { get; set; }
 
+    /// <summary>
+    /// The wear band this listing belongs to. Unlike <see cref="SkinId"/> this is NOT
+    /// best-effort: the catalogue sweep pages one skin+wear band at a time, so the band
+    /// is set directly from the sweep unit. Null for whole-skin sweeps (e.g. vanilla
+    /// knives with no wear bands).
+    /// </summary>
+    public int? ConditionId { get; set; }
+    public SkinCondition? Condition { get; set; }
+
     /// <summary>
     /// The physical item (by fingerprint) this listing is for. Many listings over
     /// time roll up to one instance, forming its market-movement history. Nullable