fix(tk2): match original SV (5-battle cap, no loss limit)

User clarified: the 0..7 win reward tiers came from Shadowverse Worlds
Beyond (sequel), not the original game we're emulating. Original SV's
Take Two caps at 5 total battles played and has no loss limit (verified
on prod: queueing continues with 2+ losses).

- arena-two-pick-rewards.json: drop 6w + 7w tiers (12 rows remain).
- ArenaTwoPickConfig: remove MaxLosses property.
- ArenaTwoPickService: termination is now battlesPlayed >= maxBattles
  (5 from MAX(reward.WinCount)). RecordBattleResult no longer flips
  IsSelectCompleted on the 2nd loss.
- ResolveMaxBattleCountAsync empty-catalog default 7 → 5.
- Tests updated for the new counts (16 → 12 rows, max 7 → 5).

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

SVSim.UnitTests/Importers/ArenaTwoPickRewardImporterTests.cs

@@ -18,25 +18,26 @@ public class ArenaTwoPickRewardImporterTests
     }
 
     [Test]
-    public async Task Import_loads_all_16_rows_from_seed_file()
+    public async Task Import_loads_all_12_rows_from_seed_file()
     {
         await using var db = await CreateContextAsync();
         var importer = new ArenaTwoPickRewardImporter();
 
         await importer.ImportAsync(db, FindSeedDir());
 
+        // 6 WinCount tiers (0..5) × 2 reward rows each = 12. Classic SV TK2 caps at 5 battles.
         var rows = await db.ArenaTwoPickRewards.OrderBy(r => r.WinCount).ThenBy(r => r.RewardType).ToListAsync();
-        Assert.That(rows.Count, Is.EqualTo(16));
-        Assert.That(rows.Max(r => r.WinCount), Is.EqualTo(7));
+        Assert.That(rows.Count, Is.EqualTo(12));
+        Assert.That(rows.Max(r => r.WinCount), Is.EqualTo(5));
 
         var w0 = rows.Where(r => r.WinCount == 0).ToList();
         Assert.That(w0.Count, Is.EqualTo(2));
         Assert.That(w0.Single(r => r.RewardType == 4).RewardNum, Is.EqualTo(1));
         Assert.That(w0.Single(r => r.RewardType == 9).RewardNum, Is.EqualTo(100));
 
-        var w7 = rows.Where(r => r.WinCount == 7).ToList();
-        Assert.That(w7.Single(r => r.RewardType == 4).RewardNum, Is.EqualTo(2));
-        Assert.That(w7.Single(r => r.RewardType == 9).RewardNum, Is.EqualTo(1500));
+        var w5 = rows.Where(r => r.WinCount == 5).ToList();
+        Assert.That(w5.Single(r => r.RewardType == 4).RewardNum, Is.EqualTo(1));
+        Assert.That(w5.Single(r => r.RewardType == 9).RewardNum, Is.EqualTo(1000));
     }
 
     [Test]
@@ -49,7 +50,7 @@ public class ArenaTwoPickRewardImporterTests
         await importer.ImportAsync(db, FindSeedDir());
 
         var count = await db.ArenaTwoPickRewards.CountAsync();
-        Assert.That(count, Is.EqualTo(16), "second import should upsert, not duplicate");
+        Assert.That(count, Is.EqualTo(12), "second import should upsert, not duplicate");
     }
 
     private static string FindSeedDir()