g_invalid on disconnect + walkbot lebensraum 2s check

src/hacks/Walkbot.cpp

@@ -1258,7 +1258,7 @@ void Move()
             }
         }
         static Timer livingspace_timer{};
-        if (livingspace_timer.test_and_set(1000 * 8))
+        if (livingspace_timer.test_and_set(1000 * 2))
         {
             CheckLivingSpace();
         }

src/hooks/others.cpp

@@ -378,6 +378,7 @@ static CatVar die_if_vac(CV_SWITCH, "die_if_vac", "0", "Die if VAC banned");
 
 void Shutdown_hook(void *_this, const char *reason)
 {
+	g_Settings.bInvalid = true;
     // This is a INetChannel hook - it SHOULDN'T be static because netchannel
     // changes.
     const Shutdown_t original =