Departed-pod resilience: collision guard + console loss ends the race

Round six raced all three machines (staging fix confirmed) and then
exposed what happens when a pod leaves mid-mission - which arcade pods
never did.

The B crash dump named it exactly: VTV::TakeDamageMessageHandler
resolved message->inflictingEntity to NULL (the entity belonged to the
departed owner) and dereferenced it - Verify is compiled out in
release. Collision damage from an entity that no longer exists is now
ignored.

And the race B and C were left in was a zombie: the owner (console)
had aborted, so the mission clock would count up forever and the
death/respawn flow hung with nobody to arbitrate. Lobby-member races
now set gConsoleLossEndsMission: losing the console mid-mission posts
StopMission locally, the pod tears down, and lands back in the lobby
room. Arcade -net pods keep the re-listen-and-wait behavior.

Loopback hosted race still green.

For the drivers: the ampersand key is the arcade mission-abort - that
was every crash-on-keypress so far; and a sleeping Bluetooth pad wakes
on the Xbox button and hot-connects within 3 seconds (PadRIO
re-probes).

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

MUNGA_L4/L4NET.CPP

@@ -20,6 +20,8 @@
 #include "l4host.h"
 #include "l4net.h"
 #include "l4nettransport.h"
+#include "..\munga\appmgr.h"
+#include "..\munga\appmsg.h"
 #include "..\munga\mission.h"
 #include "..\munga\notation.h"
 //#include <netnub.hpp>
@@ -1000,6 +1002,20 @@ void L4NetworkManager::HostDisconnectedMessageHandler(HostDisconnectedMessage* H
 #else
 			myConsoleHost = 0;
 #endif
+			//
+			// Lobby-member races: the departed console was the race
+			// owner - without a console the mission clock counts up
+			// forever, so end the mission and get back to the lobby
+			// room. (Arcade pods keep the listen above and wait for
+			// their console to return.)
+			//
+			if (gConsoleLossEndsMission &&
+				application->GetApplicationState() == Application::RunningMission)
+			{
+				DEBUG_STREAM << "Console lost mid-race - ending the mission\n" << std::flush;
+				Application::StopMissionMessage stop_message(0);
+				application->Post(DefaultEventPriority, application, &stop_message);
+			}
 			break;
 		}
 		default: