Ghost command now releases artifact ghost role

Content.Server/Xenoarchaeology/XenoArtifacts/ArtifactSystem.Ghost.cs

@@ -0,0 +1,37 @@
+using Content.Server.GameTicking;
+using Content.Shared.Mind.Components;
+
+namespace Content.Server.Xenoarchaeology.XenoArtifacts;
+
+public partial class ArtifactSystem
+{
+    [Dependency] private readonly GameTicker _gameTicker = default!;
+
+    private void InitializeGhost()
+    {
+        SubscribeLocalEvent<GhostAttemptHandleEvent>(HandleGhost);
+    }
+
+    /// <summary>
+    /// The expected way to trigger this handler is from using the /ghost command as an artifact,
+    /// which calls OnGhostAttempt with CanReturnGlobal set to `true`. Because of this, the artifact ghost role isn't freed.
+    /// This method calls OnGhostAttempt with CanReturnGlobal parameter set to `false`, if the ghosting entity is an artifact.
+    /// </summary>
+    private void HandleGhost(GhostAttemptHandleEvent ev)
+    {
+        // Return if CanReturnGlobal is already false
+        if (ev.CanReturnGlobal == false)
+            return;
+
+        if (!TryComp<ArtifactComponent>(ev.Mind.CurrentEntity, out var artifact))
+            return;
+        if (!TryComp<MindContainerComponent>(ev.Mind.CurrentEntity, out var mindcontainer))
+            return;
+
+        if (!mindcontainer.Mind.HasValue)
+            return;
+
+        ev.Handled = true;
+        ev.Result = _gameTicker.OnGhostAttempt(mindcontainer.Mind.Value, false, false, ev.Mind);
+    }
+}

Content.Server/Xenoarchaeology/XenoArtifacts/ArtifactSystem.cs

@@ -36,6 +36,7 @@ public sealed partial class ArtifactSystem : EntitySystem
 
         InitializeCommands();
         InitializeActions();
+        InitializeGhost();
     }
 
     /// <summary>