feat(story): populate build/trial/default deck lists on get_deck_list

Wire IBuildDeckRepository into StoryService; GetDeckListAsync now looks
up the chapter's CharaId, fetches class-specific prebuilt/trial decks via
GetStoryDecksByClass, and loads all DefaultDecks for default_deck_list.
Class guard (1-8) leaves build/trial empty for non-class chapters, matching
prod behaviour.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

SVSim.UnitTests/Story/StoryDeckListServiceTests.cs

@@ -0,0 +1,74 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using NUnit.Framework;
+using SVSim.Database;
+using SVSim.Database.Entities.Story;
+using SVSim.Database.Enums;
+using SVSim.Database.Models;
+using SVSim.EmulatedEntrypoint.Services;
+using SVSim.UnitTests.Infrastructure;
+
+namespace SVSim.UnitTests.Story;
+
+[TestFixture]
+public class StoryDeckListServiceTests
+{
+    [Test]
+    public async Task GetDeckList_populates_build_trial_and_default_for_chapter_class()
+    {
+        using var factory = new SVSimTestFactory();
+        using var scope = factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+
+        // StoryChapter.SectionId has an enforced FK to StorySection; seed the parent row first.
+        db.StorySections.Add(new StorySection { Id = 1, StoryApiType = StoryApiType.Main });
+        // Chapter 14 is a class-1 (Forestcraft) chapter.
+        db.StoryChapters.Add(new StoryChapter { StoryId = 14, SectionId = 1, CharaId = 1, ChapterId = "14" });
+
+        // One class-1 build deck (701) + one class-1 trial deck (13001), each with a 1-card product.
+        // BuildDeckProductEntry has an enforced FK SeriesId -> BuildDeckSeries; seed the parent first.
+        db.BuildDeckSeries.Add(new BuildDeckSeriesEntry { Id = 0 });
+        db.BuildDeckProducts.Add(new BuildDeckProductEntry { Id = 701, Cards = new() { new BuildDeckProductCardEntry { CardId = 100, Number = 1 } } });
+        db.BuildDeckProducts.Add(new BuildDeckProductEntry { Id = 13001, Cards = new() { new BuildDeckProductCardEntry { CardId = 200, Number = 1 } } });
+        db.StoryDecks.Add(new StoryDeckEntry { DeckNo = 701, Kind = StoryDeckKind.Build, ClassId = 1, DeckName = "Pure Devotion", DeckFormat = null });
+        db.StoryDecks.Add(new StoryDeckEntry { DeckNo = 13001, Kind = StoryDeckKind.Trial, ClassId = 1, DeckName = "Tempo Forestcraft", DeckFormat = 1 });
+
+        db.DefaultDecks.Add(new DefaultDeckEntry { Id = 91, ClassId = 1, SleeveId = 3000011, LeaderSkinId = 0, DeckName = "Default", CardIdArray = "[100,100,100]" });
+        await db.SaveChangesAsync();
+
+        var service = scope.ServiceProvider.GetRequiredService<IStoryService>();
+        var resp = await service.GetDeckListAsync(StoryApiType.Main, storyId: 14, viewerId: 1);
+
+        Assert.That(resp.BuildDeckList.Count, Is.EqualTo(1));
+        Assert.That(resp.BuildDeckList[0].DeckNo, Is.EqualTo(701));
+        Assert.That(resp.BuildDeckList[0].DeckName, Is.EqualTo("Pure Devotion"));
+        Assert.That(resp.BuildDeckList[0].CardIdArray, Is.EqualTo(new long[] { 100 }));
+
+        Assert.That(resp.TrialDeckList.Count, Is.EqualTo(1));
+        Assert.That(resp.TrialDeckList[0].DeckNo, Is.EqualTo(13001));
+        Assert.That(resp.TrialDeckList[0].DeckFormat, Is.EqualTo(1));
+
+        Assert.That(resp.DefaultDeckList.ContainsKey("91"), Is.True);
+        Assert.That(resp.DefaultDeckList["91"].CardIdArray, Is.EqualTo(new long[] { 100, 100, 100 }));
+    }
+
+    [Test]
+    public async Task GetDeckList_returns_empty_build_trial_for_non_class_chapter()
+    {
+        using var factory = new SVSimTestFactory();
+        using var scope = factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+
+        // StoryChapter.SectionId has an enforced FK to StorySection; seed the parent row first.
+        db.StorySections.Add(new StorySection { Id = 17, StoryApiType = StoryApiType.Main });
+        // chara_id 0 -> custom-leader / non-class chapter.
+        db.StoryChapters.Add(new StoryChapter { StoryId = 500, SectionId = 17, CharaId = 0, ChapterId = "500" });
+        await db.SaveChangesAsync();
+
+        var service = scope.ServiceProvider.GetRequiredService<IStoryService>();
+        var resp = await service.GetDeckListAsync(StoryApiType.Main, storyId: 500, viewerId: 1);
+
+        Assert.That(resp.BuildDeckList, Is.Empty);
+        Assert.That(resp.TrialDeckList, Is.Empty);
+    }
+}

SVSim.UnitTests/Story/StoryServiceTests.cs

@@ -35,6 +35,7 @@ public class StoryServiceTests
             db: db,
             configService: StoryServiceTestHelpers.NewConfigService(),
             deckRepository: new Mock<SVSim.Database.Repositories.Deck.IDeckRepository>().Object,
+            buildDecks: new Mock<SVSim.Database.Repositories.BuildDeck.IBuildDeckRepository>().Object,
             logger: NullLogger<StoryService>.Instance);
     }
 
@@ -72,6 +73,7 @@ public class StoryServiceTests
             db: db,
             configService: StoryServiceTestHelpers.NewConfigService(),
             deckRepository: new Mock<SVSim.Database.Repositories.Deck.IDeckRepository>().Object,
+            buildDecks: new Mock<SVSim.Database.Repositories.BuildDeck.IBuildDeckRepository>().Object,
             logger: NullLogger<StoryService>.Instance);
     }
 
@@ -404,6 +406,7 @@ public class StoryServiceTests
             db: db,
             configService: StoryServiceTestHelpers.NewConfigService(),
             deckRepository: new Mock<SVSim.Database.Repositories.Deck.IDeckRepository>().Object,
+            buildDecks: new Mock<SVSim.Database.Repositories.BuildDeck.IBuildDeckRepository>().Object,
             logger: NullLogger<StoryService>.Instance);
     }