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.BattleNode/Lifecycle/ScriptedLifecycle.cs

@@ -1,3 +1,4 @@
+using SVSim.BattleNode.Bridge;
 using SVSim.BattleNode.Protocol;
 using SVSim.BattleNode.Protocol.Bodies;
 
@@ -9,29 +10,32 @@ namespace SVSim.BattleNode.Lifecycle;
 /// the dispatch pushes after the player's TurnEnd. The values are templated from the TK2
 /// captures at <c>data_dumps/captures/battle-traffic_tk2_regular.ndjson</c> — anything
 /// hardcoded here came from a real prod frame, with names + provenance in
-/// <see cref="ScriptedProfiles"/>.
+/// <see cref="ScriptedProfiles"/>. The player-half of Matched/BattleStart now reads from
+/// <see cref="MatchContext"/> instead of <see cref="ScriptedProfiles"/>.
 /// </summary>
 public static class ScriptedLifecycle
 {
-    /// <summary>
-    /// CardId used for all 30 entries in the dummy deck. A stable neutral card that exists in
-    /// every card-master version we care about, so the client can render it without
-    /// triggering a card-master-mismatch error.
-    /// </summary>
-    public const long DummyCardId = 100011010L;
-
     /// <summary>
     /// Viewer id we present as the opponent on every scripted push. Out-of-range vs. real
     /// viewer ids so it can't collide with a real account in the auth pipeline.
     /// </summary>
     public const long FakeOpponentViewerId = 999_999_999L;
 
-    public static MsgEnvelope BuildMatched(long playerViewerId, long opponentViewerId, string battleId) =>
+    public static MsgEnvelope BuildMatched(MatchContext ctx, long playerViewerId, long opponentViewerId, string battleId) =>
         EnvelopeForPush(NetworkBattleUri.Matched,
             new MatchedBody(
-                SelfInfo: ScriptedProfiles.PlayerMatchedProfile with { OppoId = opponentViewerId },
+                SelfInfo: new MatchedSelfInfo(
+                    CountryCode: ctx.CountryCode,
+                    UserName: ctx.UserName,
+                    SleeveId: ctx.SleeveId,
+                    EmblemId: ctx.EmblemId,
+                    DegreeId: ctx.DegreeId,
+                    FieldId: ctx.FieldId,
+                    IsOfficial: ctx.IsOfficial,
+                    OppoId: opponentViewerId,
+                    Seed: ScriptedProfiles.BattleSeed),
                 OppoInfo: ScriptedProfiles.OpponentMatchedProfile with { OppoId = playerViewerId },
-                SelfDeck: BuildDummyDeck()),
+                SelfDeck: BuildPlayerDeck(ctx.SelfDeckCardIds)),
             bid: battleId);
 
     public static MsgEnvelope BuildBattleStart(long playerViewerId) =>
@@ -104,12 +108,12 @@ public static class ScriptedLifecycle
         return list;
     }
 
-    private static IReadOnlyList<DeckCardRef> BuildDummyDeck()
+    private static IReadOnlyList<DeckCardRef> BuildPlayerDeck(IReadOnlyList<long> cardIds)
     {
-        var deck = new List<DeckCardRef>(30);
-        for (var i = 1; i <= 30; i++)
+        var deck = new List<DeckCardRef>(cardIds.Count);
+        for (var i = 0; i < cardIds.Count; i++)
         {
-            deck.Add(new DeckCardRef(Idx: i, CardId: DummyCardId));
+            deck.Add(new DeckCardRef(Idx: i + 1, CardId: cardIds[i]));
         }
         return deck;
     }

SVSim.BattleNode/Lifecycle/ScriptedProfiles.cs

@@ -15,18 +15,6 @@ internal static class ScriptedProfiles
     // From frame[2] (Matched).
     public const long BattleSeed = 17_548_138L;
 
-    // From frame[2] (Matched). OppoId is overwritten per battle from the bridge.
-    public static readonly MatchedSelfInfo PlayerMatchedProfile = new(
-        CountryCode: "KOR",
-        UserName: "Player",
-        SleeveId: "3000011",
-        EmblemId: "701441011",
-        DegreeId: "300003",
-        FieldId: 43,
-        IsOfficial: 0,
-        OppoId: 0,
-        Seed: BattleSeed);
-
     public static readonly MatchedOppoInfo OpponentMatchedProfile = new(
         CountryCode: "JPN",
         UserName: "Opponent",

SVSim.BattleNode/Sessions/BattleSession.cs

@@ -235,7 +235,7 @@ public sealed class BattleSession
                 Phase = BattleSessionPhase.AwaitingInitBattle;
                 break;
             case NetworkBattleUri.InitBattle when Phase == BattleSessionPhase.AwaitingInitBattle:
-                result.Add((ScriptedLifecycle.BuildMatched(ViewerId, ScriptedLifecycle.FakeOpponentViewerId, BattleId), NoStock: false));
+                result.Add((ScriptedLifecycle.BuildMatched(Context, ViewerId, ScriptedLifecycle.FakeOpponentViewerId, BattleId), NoStock: false));
                 Phase = BattleSessionPhase.AwaitingLoaded;
                 break;
             case NetworkBattleUri.Loaded when Phase == BattleSessionPhase.AwaitingLoaded: