fix(pack): tutorial pack_open ThenIncludes OwnedItemEntry.Item

Without .ThenInclude(i => i.Item), the OwnedItemEntry.Item nav defaults to a
new ItemEntry() with Id=0 (project_ef_nav_include_pitfall), so the
FirstOrDefault(i => i.Item.Id == ticketItemId) lookup never matched. The
ticket was never decremented and reward_list omitted the post-state entry —
on the next /tutorial/pack_info the pack stayed visible and the client
re-clicked into plain /pack/open, which 501s on type_detail=5.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.EmulatedEntrypoint/Controllers/PackController.cs

@@ -183,7 +183,7 @@ public class PackController : SVSimController
         var viewer = await _db.Viewers
             .Include(v => v.PackOpenCounts)
             .Include(v => v.MissionData)
-            .Include(v => v.Items)
+            .Include(v => v.Items).ThenInclude(i => i.Item)
             .AsSplitQuery()
             .FirstAsync(v => v.Id == viewerId);
         int packNumber = Math.Max(1, request.PackNumber);

SVSim.UnitTests/Controllers/PackControllerTests.cs

@@ -40,6 +40,11 @@ public class PackControllerTests
         await factory.SeedGlobalsAsync();
         long viewerId = await factory.SeedViewerAsync(tutorialState: 41);
 
+        // Seed the starter ticket the gift_receive step would have granted. /tutorial/pack_open
+        // is supposed to decrement this count by `pack_number` (1) and emit a post-state entry
+        // into reward_list (per project_wire_reward_list_post_state).
+        await factory.SeedOwnedItemAsync(viewerId, itemId: 90001, count: 1, itemName: "Starter Legendary Ticket");
+
         // Pack 99047 (starter legendary) has base_pack_id=90001. The minimal card seed only
         // creates set 10001, so we seed set 90001 explicitly for the pool resolver.
         using (var scope = factory.Services.CreateScope())
@@ -80,6 +85,23 @@ public class PackControllerTests
             "Starter pack 99047/990047 delivers 8 cards (child_gacha.card_count=8).");
 
         Assert.That(await factory.GetViewerTutorialStateAsync(viewerId), Is.EqualTo(100));
+
+        // Ticket decrement: the legendary starter ticket (90001) should be consumed.
+        Assert.That(await factory.GetOwnedItemCountAsync(viewerId, 90001), Is.EqualTo(0),
+            "Tutorial pack_open must decrement the gating ticket; otherwise /tutorial/pack_info " +
+            "keeps showing the pack and the client re-clicks into /pack/open (501 on type_detail=5).");
+
+        // reward_list must carry a post-state item entry for the ticket. RewardType=4 (Item),
+        // RewardId=90001, RewardNum=0 (post-state total, NOT delta).
+        var rewardList = root.GetProperty("reward_list");
+        var ticketEntry = rewardList.EnumerateArray()
+            .FirstOrDefault(e => e.GetProperty("reward_type").GetInt32() == 4
+                              && e.GetProperty("reward_id").GetInt64() == 90001);
+        Assert.That(ticketEntry.ValueKind, Is.Not.EqualTo(JsonValueKind.Undefined),
+            "reward_list must include a type=4 entry for the consumed ticket (90001) so the " +
+            "client's _userItemDict updates immediately — project_wire_reward_list_post_state.");
+        Assert.That(ticketEntry.GetProperty("reward_num").GetInt32(), Is.EqualTo(0),
+            "RewardNum is the post-state TOTAL, not the delta consumed.");
     }
 
     [Test]

SVSim.UnitTests/Controllers/TutorialFlowEndToEndTests.cs

@@ -103,6 +103,11 @@ public class TutorialFlowEndToEndTests
 
         Assert.That(await factory.GetViewerTutorialStateAsync(viewerId), Is.EqualTo(100),
             "Viewer reaches TUTORIAL_END after the full flow.");
+
+        // The gift granted item 90001 count=1 (via /tutorial/gift_receive entry 71478630).
+        // /tutorial/pack_open consumes it; assert the ticket is gone post-flow.
+        Assert.That(await factory.GetOwnedItemCountAsync(viewerId, 90001), Is.EqualTo(0),
+            "Starter legendary ticket must be consumed by /tutorial/pack_open.");
     }
 
     private static Task<HttpResponseMessage> Post(HttpClient client, string url, string body)

SVSim.UnitTests/Infrastructure/SVSimTestFactory.cs

@@ -397,6 +397,52 @@ internal sealed class SVSimTestFactory : WebApplicationFactory<Program>
         return (viewer.Currency.Crystals, viewer.Currency.Rupees, viewer.Currency.RedEther);
     }
 
+    /// <summary>
+    /// Seeds an OwnedItemEntry for the viewer. Inserts the ItemEntry master row if missing
+    /// (Type defaults to 2 = card-pack ticket since both tutorial gift items 80001 and 90001
+    /// are tickets). Tests use this to set up the ticket inventory that /tutorial/pack_open
+    /// is supposed to consume.
+    /// </summary>
+    public async Task SeedOwnedItemAsync(long viewerId, int itemId, int count, string itemName = "TestItem", int itemType = 2)
+    {
+        using var scope = Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+        var item = await db.Items.FindAsync(itemId);
+        if (item is null)
+        {
+            item = new ItemEntry { Id = itemId, Name = itemName, Type = itemType };
+            db.Items.Add(item);
+            await db.SaveChangesAsync();
+        }
+        var viewer = await db.Viewers
+            .Include(v => v.Items).ThenInclude(i => i.Item)
+            .FirstAsync(v => v.Id == viewerId);
+        var existing = viewer.Items.FirstOrDefault(i => i.Item.Id == itemId);
+        if (existing is null)
+        {
+            viewer.Items.Add(new OwnedItemEntry { Item = item, Count = count, Viewer = viewer });
+        }
+        else
+        {
+            existing.Count = count;
+        }
+        await db.SaveChangesAsync();
+    }
+
+    /// <summary>
+    /// Reads the viewer's current owned count for <paramref name="itemId"/>. Returns 0 if no
+    /// row exists. Tests use this to assert ticket consumption after /tutorial/pack_open.
+    /// </summary>
+    public async Task<int> GetOwnedItemCountAsync(long viewerId, int itemId)
+    {
+        using var scope = Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+        var viewer = await db.Viewers
+            .Include(v => v.Items).ThenInclude(i => i.Item)
+            .FirstAsync(v => v.Id == viewerId);
+        return viewer.Items.FirstOrDefault(i => i.Item.Id == itemId)?.Count ?? 0;
+    }
+
     protected override void Dispose(bool disposing)
     {
         base.Dispose(disposing);