refactor(camera): extract the update frame

Move fly/chase publication, combat target tracking, and local player projection behind typed runtime owners. Preserve the inbound-created projection/reconcile barrier while removing GameWindow callbacks and duplicate shadow helpers.

tests/AcDream.App.Tests/Combat/LiveCombatAttackOperationsTests.cs

@@ -120,6 +120,7 @@ public sealed class LiveCombatAttackOperationsTests
     {
         public bool AutoTarget { get; set; }
         public bool AutoRepeatAttack { get; set; }
+        public bool ViewCombatTarget { get; set; }
     }
 
     private sealed class FakeLiveSource : ILiveInWorldSource, ILiveWorldSessionSource