Battlepass fix

SVSim.EmulatedEntrypoint/Services/BattlePassService.cs

@@ -71,7 +71,10 @@ public sealed class BattlePassService : IBattlePassService
                 MaxLevel = Inv(season.MaxLevel),
                 StartDate = FormatWireDate(season.StartDate),
                 EndDate = FormatWireDate(season.EndDate),
-                CanPurchase = season.CanPurchase,
+                // Client uses can_purchase as the sole "show buy button / use normal-pass icon"
+                // signal on the home BP screen (Wizard/BattlePass.cs:56,84 + BattlePassHeader.cs:51);
+                // it must flip to false once the viewer owns the pass, or the button persists.
+                CanPurchase = season.CanPurchase && !progress.IsPremium,
             },
             RewardInfo = new BattlePassRewardInfoDto
             {

SVSim.UnitTests/Controllers/BattlePassControllerInfoTests.cs

@@ -105,6 +105,33 @@ public class BattlePassControllerInfoTests
         Assert.That(premiumReward.GetProperty("is_received").GetBoolean(), Is.False);
     }
 
+    [Test]
+    public async Task Info_can_purchase_is_false_when_viewer_already_premium()
+    {
+        using var factory = new SVSimTestFactory();
+        long viewerId = await factory.SeedViewerAsync();
+        await SeedSeason23WithRewards(factory);
+
+        using (var scope = factory.Services.CreateScope())
+        {
+            var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+            db.ViewerBattlePassProgress.Add(new ViewerBattlePassProgressEntry
+            {
+                ViewerId = viewerId, SeasonId = 23, CurrentPoint = 0, IsPremium = true,
+            });
+            await db.SaveChangesAsync();
+        }
+
+        using var client = factory.CreateAuthenticatedClient(viewerId);
+        var response = await client.PostAsync("/battle_pass/info", JsonBody(EmptyAuthBody));
+        var body = await response.Content.ReadAsStringAsync();
+        using var doc = JsonDocument.Parse(body);
+
+        Assert.That(doc.RootElement.GetProperty("season_info").GetProperty("can_purchase").GetBoolean(),
+            Is.False,
+            "premium owners must see can_purchase=false (client uses it as the sole hide-buy-button signal)");
+    }
+
     [Test]
     public async Task Info_returns_empty_payload_outside_any_season_window()
     {