feat(battle-node): BuildMatched consumes MatchContext for player half

selfInfo cosmetics + 30-card selfDeck now read from MatchContext. Opponent
half stays in ScriptedProfiles. DummyCardId / BuildDummyDeck / PlayerMatched
Profile removed. Two new tests lock the deck-idx pairing and cosmetic
flow-through; TypedBodyWireShapeTests + lifecycle tests thread a fixture ctx.

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

SVSim.UnitTests/BattleNode/Lifecycle/ScriptedLifecycleTests.cs

@@ -1,4 +1,5 @@
 using NUnit.Framework;
+using SVSim.BattleNode.Bridge;
 using SVSim.BattleNode.Lifecycle;
 using SVSim.BattleNode.Protocol;
 using SVSim.BattleNode.Protocol.Bodies;
@@ -11,26 +12,61 @@ public class ScriptedLifecycleTests
     [Test]
     public void BuildMatched_PutsOppoIdInSelfInfoEqualToTheRealOpponentVid()
     {
-        var env = ScriptedLifecycle.BuildMatched(playerViewerId: 906243102, opponentViewerId: 847666884, battleId: "b");
+        var env = ScriptedLifecycle.BuildMatched(FixtureCtx(),
+            playerViewerId: 906243102, opponentViewerId: 847666884, battleId: "b");
 
         Assert.That(env.Uri, Is.EqualTo(NetworkBattleUri.Matched));
         var body = (MatchedBody)env.Body;
         Assert.That(body.SelfInfo.OppoId, Is.EqualTo(847666884L));
         Assert.That(body.OppoInfo.OppoId, Is.EqualTo(906243102L));
-
-        // Bid travels in the envelope, not the Body — protect against the reserved-keys regression.
         Assert.That(env.Bid, Is.EqualTo("b"));
-        // Typed bodies can't carry an envelope-level "bid" key by construction (no such property).
     }
 
     [Test]
     public void BuildMatched_ContainsThirtyCardSelfDeck()
     {
-        var env = ScriptedLifecycle.BuildMatched(1, 2, "b");
+        var env = ScriptedLifecycle.BuildMatched(FixtureCtx(), 1, 2, "b");
         var body = (MatchedBody)env.Body;
         Assert.That(body.SelfDeck.Count, Is.EqualTo(30));
     }
 
+    [Test]
+    public void BuildMatched_deck_idxs_pair_1to30_with_context_card_ids()
+    {
+        var draftedDeck = Enumerable.Range(1, 30).Select(i => 200_000_000L + i).ToList();
+        var env = ScriptedLifecycle.BuildMatched(FixtureCtx(draftedDeck), 1, 2, "b");
+        var body = (MatchedBody)env.Body;
+
+        for (int i = 0; i < 30; i++)
+        {
+            Assert.That(body.SelfDeck[i].Idx, Is.EqualTo(i + 1),
+                $"slot {i}: idx should be 1-based position");
+            Assert.That(body.SelfDeck[i].CardId, Is.EqualTo(200_000_000L + i + 1),
+                $"slot {i}: cardId should be the drafted card");
+        }
+    }
+
+    [Test]
+    public void BuildMatched_selfInfo_cosmetics_flow_from_context()
+    {
+        var ctx = FixtureCtx() with
+        {
+            CountryCode = "JPN", UserName = "Drafter", SleeveId = "999",
+            EmblemId = "888", DegreeId = "777", FieldId = 42, IsOfficial = 1,
+        };
+
+        var env = ScriptedLifecycle.BuildMatched(ctx, 1, 2, "b");
+        var body = (MatchedBody)env.Body;
+
+        Assert.That(body.SelfInfo.CountryCode, Is.EqualTo("JPN"));
+        Assert.That(body.SelfInfo.UserName, Is.EqualTo("Drafter"));
+        Assert.That(body.SelfInfo.SleeveId, Is.EqualTo("999"));
+        Assert.That(body.SelfInfo.EmblemId, Is.EqualTo("888"));
+        Assert.That(body.SelfInfo.DegreeId, Is.EqualTo("777"));
+        Assert.That(body.SelfInfo.FieldId, Is.EqualTo(42));
+        Assert.That(body.SelfInfo.IsOfficial, Is.EqualTo(1));
+    }
+
     [Test]
     public void BuildBattleStart_HasTurnStateZeroAndBattleTypeEleven()
     {
@@ -60,7 +96,6 @@ public class ScriptedLifecycleTests
     public void ComputeHandAfterSwap_SwapMiddleCard_ReplacesWithFreshDeckIdx()
     {
         var hand = ScriptedLifecycle.ComputeHandAfterSwap(new long[] { 2 });
-        // pos 0 keeps idx 1; pos 1 (was idx 2) gets next deck idx (4); pos 2 keeps idx 3.
         Assert.That(hand, Is.EqualTo(new long[] { 1, 4, 3 }));
     }
 
@@ -98,4 +133,11 @@ public class ScriptedLifecycleTests
         var body = (OpponentTurnStartBody)env.Body;
         Assert.That(body.Spin, Is.EqualTo(100));
     }
+
+    private static MatchContext FixtureCtx(IReadOnlyList<long>? deck = null) => new(
+        SelfDeckCardIds: deck ?? Enumerable.Range(1, 30).Select(i => 100_011_010L).ToList(),
+        ClassId: "1", CharaId: "1", CardMasterName: "card_master_node_10015",
+        CountryCode: "KOR", UserName: "Player", SleeveId: "3000011",
+        EmblemId: "701441011", DegreeId: "300003", FieldId: 43, IsOfficial: 0,
+        BattleType: 11);
 }