feat(free-battle): register PvpOnly ModePolicy for rotation+unlimited

SVSim.EmulatedEntrypoint/Program.cs

@@ -153,6 +153,10 @@ public class Program
             new ModePolicy("arena_two_pick_battle", PolicyKind.PvpOnly),
             new ModePolicy("rotation_rank_battle", PolicyKind.PvpFirstThenAiFallback),
             new ModePolicy("unlimited_rank_battle", PolicyKind.PvpFirstThenAiFallback),
+            // Free battle is casual PvP — no /ai_*_free_battle URL family exists in the client
+            // (see Shadowverse_Code_2026-05-23/ApiType.cs), so PvpOnly: park forever, no AI fallback.
+            new ModePolicy("rotation_free_battle", PolicyKind.PvpOnly),
+            new ModePolicy("unlimited_free_battle", PolicyKind.PvpOnly),
         }));
         builder.Services.AddSingleton<IMatchingPairUpService, InProcessPairUp>();
         // Single resolver shared by every /do_matching family controller. Owns the