feat(app): FA2 -- fellowship/allegiance command routing for graphical + headless hosts

Both LiveSocialSessionBindings construction sites updated together
(LiveSessionRuntimeFactory.cs, HeadlessSessionHost.cs) so the single
GameEventWiring.WireAll registration site serves both hosts identically
(the K-slice unification). CurrentGameRuntimeCommandAdapter implements
IRuntimeFellowshipCommands/IRuntimeAllegianceCommands over the App
command bus (LiveSessionCommandRouter gains 12 new *RuntimeCmd records
+ registrations + LiveSessionCommandBindings send delegates), mirroring
DirectGameRuntimeCommandAdapter's direct-session shape including the
identical Quit leader-hand-off rule read from RuntimeFellowshipState.
CurrentGameRuntimeAdapter (the graphical IGameRuntimeView/
IGameRuntimeCommands composite) exposes the two new views/command
groups. Headless's DirectGameRuntimeCommandAdapter needed no changes --
it already implements both new interfaces from the Runtime-layer
commit.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/AcDream.App.Tests/Input/GameplayInputCommandControllerTests.cs

@@ -227,6 +227,8 @@ public sealed class GameplayInputCommandControllerTests
             throw new NotSupportedException();
         public IRuntimeSocialView Social => throw new NotSupportedException();
         public IRuntimeChatView Chat => throw new NotSupportedException();
+        public IRuntimeFellowshipView Fellowship => throw new NotSupportedException();
+        public IRuntimeAllegianceView Allegiance => throw new NotSupportedException();
         public IRuntimeActionView Actions => throw new NotSupportedException();
         public IRuntimeMovementView Movement => throw new NotSupportedException();
         public AcDream.Runtime.World.IRuntimeWorldEnvironmentView Environment =>