Consolidation

SVSim.Database/Repositories/Card/CardInventoryRepository.cs

@@ -59,6 +59,9 @@ public class CardInventoryRepository : ICardInventoryRepository
             totalVials += (ulong)owned.Card.CollectionInfo!.DustReward * (ulong)num;
             postCounts[cardId] = owned.Count;
         }
+        // Direct credit (not via RewardGrantService.ApplyAsync) because destruct is a debit-pair
+        // operation (destroy cards + credit vials) handled atomically here. ApplyAsync is the
+        // standard path for one-shot reward grants — see RewardGrantService for that pattern.
         viewer.Currency.RedEther += totalVials;
 
         // Deck auto-strip: any deck holding more copies of a destructed card than the viewer now owns

SVSim.Database/Repositories/Pack/IPackRepository.cs

@@ -9,5 +9,4 @@ public interface IPackRepository
     Task<Dictionary<int, ViewerPackOpenCount>> GetOpenCountsForViewer(long viewerId);
     Task IncrementOpenCount(long viewerId, int parentGachaId, int by);
     Task MarkDailyFreeUsed(long viewerId, int parentGachaId, DateTime when);
-    Task GrantCardsToViewer(long viewerId, IEnumerable<long> cardIds);
 }

SVSim.Database/Repositories/Pack/PackRepository.cs

@@ -63,28 +63,4 @@ public class PackRepository : IPackRepository
         await _db.SaveChangesAsync();
     }
 
-    public async Task GrantCardsToViewer(long viewerId, IEnumerable<long> cardIds)
-    {
-        var viewer = await _db.Viewers
-            .Include(v => v.Cards).ThenInclude(c => c.Card)
-            .FirstAsync(v => v.Id == viewerId);
-
-        var byId = viewer.Cards.ToDictionary(c => c.Card.Id);
-        foreach (var grp in cardIds.GroupBy(id => id))
-        {
-            if (byId.TryGetValue(grp.Key, out var existing))
-            {
-                existing.Count += grp.Count();
-            }
-            else
-            {
-                // Look up the card by id and attach it so we don't insert a phantom Card row.
-                var card = await _db.Cards.FirstAsync(c => c.Id == grp.Key);
-                var owned = new OwnedCardEntry { Card = card, Count = grp.Count(), IsProtected = false };
-                viewer.Cards.Add(owned);
-                byId[grp.Key] = owned;
-            }
-        }
-        await _db.SaveChangesAsync();
-    }
 }