Deck list work

SVSim.Database/Repositories/Deck/DeckRepository.cs

@@ -28,6 +28,27 @@ public class DeckRepository : IDeckRepository
                ?? new List<ShadowverseDeckEntry>();
     }
 
+    public async Task<Dictionary<Format, List<ShadowverseDeckEntry>>> GetDecksByFormats(long viewerId, IEnumerable<Format> formats)
+    {
+        var requested = formats.ToHashSet();
+        var viewer = await _dbContext.Viewers
+            .AsNoTracking()
+            .Include(v => v.Decks).ThenInclude(d => d.Class)
+            .Include(v => v.Decks).ThenInclude(d => d.Sleeve)
+            .Include(v => v.Decks).ThenInclude(d => d.LeaderSkin)
+            .FirstOrDefaultAsync(v => v.Id == viewerId);
+
+        // Seed every requested format with an empty list so callers iterate without null checks.
+        var result = requested.ToDictionary(f => f, _ => new List<ShadowverseDeckEntry>());
+        if (viewer is null) return result;
+
+        foreach (var deck in viewer.Decks.Where(d => requested.Contains(d.Format)).OrderBy(d => d.Number))
+        {
+            result[deck.Format].Add(deck);
+        }
+        return result;
+    }
+
     public async Task<ShadowverseDeckEntry?> GetDeck(long viewerId, Format format, int deckNo)
     {
         var viewer = await _dbContext.Viewers

SVSim.Database/Repositories/Deck/IDeckRepository.cs

@@ -6,6 +6,14 @@ namespace SVSim.Database.Repositories.Deck;
 public interface IDeckRepository
 {
     Task<List<ShadowverseDeckEntry>> GetDecks(long viewerId, Format format);
+
+    /// <summary>
+    /// Bulk-fetch viewer decks grouped by format. Returns a dict keyed by every format in
+    /// <paramref name="formats"/> — missing formats map to empty lists so callers don't need
+    /// dict-existence checks. Single viewer-load, no N+1.
+    /// </summary>
+    Task<Dictionary<Format, List<ShadowverseDeckEntry>>> GetDecksByFormats(long viewerId, IEnumerable<Format> formats);
+
     Task<ShadowverseDeckEntry?> GetDeck(long viewerId, Format format, int deckNo);
     Task<int> GetEmptyDeckNumber(long viewerId, Format format);
     Task<ShadowverseDeckEntry> UpsertDeck(long viewerId, Format format, int deckNo, Action<ShadowverseDeckEntry> mutate);

SVSim.Database/Repositories/Globals/GlobalsRepository.cs

@@ -94,6 +94,12 @@ public class GlobalsRepository : IGlobalsRepository
                    .FirstOrDefaultAsync();
     }
 
+    public Task<List<SpecialDeckFormatEntry>> GetActiveSpecialDeckFormats() =>
+        _dbContext.SpecialDeckFormats.AsNoTracking().OrderBy(e => e.Id).ToListAsync();
+
+    public Task<List<PaymentItemEntry>> GetPaymentItems() =>
+        _dbContext.PaymentItems.AsNoTracking().OrderBy(e => e.Id).ToListAsync();
+
     public Task<List<MaintenanceCardEntry>> GetMaintenanceCards() =>
         _dbContext.MaintenanceCards.AsNoTracking().ToListAsync();
 

SVSim.Database/Repositories/Globals/IGlobalsRepository.cs

@@ -26,6 +26,8 @@ public interface IGlobalsRepository
     Task<ColosseumConfig?> GetCurrentColosseum();
     Task<SealedConfig?> GetCurrentSealedSeason();
     Task<MasterPointRankingPeriodEntry?> GetCurrentMasterPointPeriod();
+    Task<List<SpecialDeckFormatEntry>> GetActiveSpecialDeckFormats();
+    Task<List<PaymentItemEntry>> GetPaymentItems();
     Task<List<MaintenanceCardEntry>> GetMaintenanceCards();
     Task<List<FeatureMaintenanceEntry>> GetFeatureMaintenances();
     Task<PreReleaseInfo?> GetPreReleaseInfo();