almost ready

BlueLaminate/BlueLaminate.EFCore/Entities/Skin.cs

@@ -16,12 +16,6 @@ public class Skin
     public int? DefIndex { get; set; }
     public int? PaintIndex { get; set; }
 
-    // When the catalogue-driven listing sweep last fully covered this skin. The
-    // sweep processes least-recently-swept skins first (nulls = never swept), so
-    // capped runs chain across the whole catalogue and the stalest data refreshes
-    // first. Null until the first sweep reaches this skin.
-    public DateTimeOffset? ListingsSweptAt { get; set; }
-
     public string Name { get; set; } = null!;
     public string Rarity { get; set; } = null!;
     public string? Description { get; set; }
@@ -44,6 +38,12 @@ public class Skin
     public bool? TrueFloat { get; private set; }
 
     public ICollection<SkinCondition> Conditions { get; set; } = new List<SkinCondition>();
+
+    // Per-site "last swept" checkpoints for the whole-skin sweep unit — only used for
+    // skins with no wear bands (the per-band checkpoint lives on SkinCondition.Sweeps).
+    // The sweep processes never-swept (no row) / stalest skins first. See SkinSweep.
+    public ICollection<SkinSweep> Sweeps { get; set; } = new List<SkinSweep>();
+
     public ICollection<SkinInstance> Instances { get; set; } = new List<SkinInstance>();
     public ICollection<PriceHistory> PriceHistories { get; set; } = new List<PriceHistory>();
 }