Almost there (#4343)

Co-authored-by: Amelia <77553571+Fesaa@users.noreply.github.com>

API/Extensions/QueryExtensions/ChapterQueryExtensions.cs

@@ -1,6 +1,7 @@
 using System.Linq;
 using API.Entities;
 using API.Services.Tasks.Scanner.Parser;
+using Microsoft.EntityFrameworkCore;
 
 namespace API.Extensions.QueryExtensions;
 
@@ -9,16 +10,17 @@ public static class ChapterQueryExtensions
     public static IOrderedQueryable<Chapter> ApplyDefaultChapterOrdering(this IQueryable<Chapter> query)
     {
         return query
+            .Include(c => c.Volume)
             .OrderBy(c =>
-                // Priority 1: Regular volumes (not loose leaf, not special)
-                c.Volume.Number == Parser.LooseLeafVolumeNumber ||
-                c.Volume.Number == Parser.SpecialVolumeNumber ? 1 : 0)
+                // Priority 1: Regular volumes (not loose-leaf, not special)
+                c.Volume.MinNumber == Parser.LooseLeafVolumeNumber ||
+                c.Volume.MinNumber == Parser.SpecialVolumeNumber ? 1 : 0)
             .ThenBy(c =>
                 // Priority 2: Loose leaf over specials
-                c.Volume.Number == Parser.SpecialVolumeNumber ? 1 : 0)
+                c.Volume.MinNumber == Parser.SpecialVolumeNumber ? 1 : 0)
             // Priority 3: Non-special chapters
             .ThenBy(c => c.IsSpecial ? 1 : 0)
-            .ThenBy(c => c.Volume.Number)
+            .ThenBy(c => c.Volume.MinNumber)
             .ThenBy(c => c.SortOrder);
     }
 }