refactor(battle-node): extract JudgeHandler

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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

@@ -0,0 +1,14 @@
+using SVSim.BattleNode.Protocol;
+
+namespace SVSim.BattleNode.Sessions.Dispatch.Handlers;
+
+internal sealed class JudgeHandler : IFrameHandler
+{
+    public IReadOnlyList<DispatchRoute> Handle(FrameDispatchContext ctx)
+    {
+        // Only a scripted-bot Judge is forwarded. A real player's Judge has no routing rule (drops).
+        if (ctx.IsScriptedBot(ctx.From))
+            return new[] { new DispatchRoute(ctx.Other, ctx.Env, false) };
+        return Array.Empty<DispatchRoute>();
+    }
+}