Added battles in networking

GAME_STATE_ARCHITECTURE.md

@@ -429,8 +429,10 @@ there is no prediction or rollback.
 
 Current boundaries remain:
 
-- client intent is limited to `SetCharacterDestinationCommand`; server presence
-  changes use `SetCharacterEnabledCommand` in tick bundles;
+- client intent is limited to `SetCharacterDestinationCommand`,
+  `SetCharacterTargetCommand`, `ClearCharacterAttackTargetCommand`, and
+  `TryCharacterAttackComboCommand`; server presence changes use
+  `SetCharacterEnabledCommand` in tick bundles;
 - player characters must already exist in the initial state and campaign slot
   list; dynamic spawning and reconnect history are not implemented;
 - authentication and automatic checkpoint resynchronization are absent;