Dress people at generation from a separate apparel stream.

Wardrobes live on the person in people.json: everyday layers, textbooks per parallel, and chance-based bags from catalog data. Hauling and the carry cap are defs, not constants. The golden roster gains an items column; later family members shift because Hauling consumes extra appearance rolls. Old saves without items are dressed on load.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Content/CatalogLoader.cs

@@ -609,6 +609,11 @@ public sealed class CatalogLoader
             throw new ContentLoadException($"ThingDef '{thing.DefName}' has unknown skirtLength '{thing.SkirtLength}'.");
         }
 
+        if (thing.CarryChance is < 0f or > 1f)
+        {
+            throw new ContentLoadException($"ThingDef '{thing.DefName}' carryChance must be 0–1.");
+        }
+
         var layers = new HashSet<string>(StringComparer.Ordinal);
         foreach (var layer in thing.Layers)
         {