refactor(battle-node): extract TurnEndFinalHandler

SVSim.BattleNode/Sessions/BattleSession.cs

@@ -41,6 +41,7 @@ public sealed class BattleSession
             [NetworkBattleUri.Loaded] = new LoadedHandler(),
             [NetworkBattleUri.Swap] = new SwapHandler(),
             [NetworkBattleUri.TurnEnd] = new TurnEndHandler(),
+            [NetworkBattleUri.TurnEndFinal] = new TurnEndFinalHandler(),
         };
 
     private FrameDispatchContext BuildContext(IBattleParticipant from, MsgEnvelope env) =>

SVSim.BattleNode/Sessions/Dispatch/Handlers/TurnEndFinalHandler.cs

@@ -0,0 +1,27 @@
+using SVSim.BattleNode.Protocol;
+
+namespace SVSim.BattleNode.Sessions.Dispatch.Handlers;
+
+internal sealed class TurnEndFinalHandler : IFrameHandler
+{
+    public IReadOnlyList<DispatchRoute> Handle(FrameDispatchContext ctx)
+    {
+        // case 4: Bot — Judge to sender only.
+        if (ctx.Type == BattleType.Bot && ctx.SenderPhase == BattleSessionPhase.AfterReady)
+            return new[] { new DispatchRoute(ctx.From, BattleFrames.BuildJudgeBroadcast(), false) };
+
+        // case 9: general — forward the envelope to other + paired BattleFinish + Terminal.
+        if (ctx.SenderPhase == BattleSessionPhase.AfterReady)
+        {
+            ctx.State.SessionPhase = BattleSessionPhase.Terminal;
+            return new[]
+            {
+                new DispatchRoute(ctx.Other, ctx.Env, false),
+                new DispatchRoute(ctx.From, BattleFrames.BuildBattleFinish(BattleResult.LifeWin), true),
+                new DispatchRoute(ctx.Other, BattleFrames.BuildBattleFinish(BattleResult.LifeLose), true),
+            };
+        }
+
+        return Array.Empty<DispatchRoute>();
+    }
+}