Lobby refactor + species loadouts support (#27576)

* Vox stuff

* Species loadouts and lobby refactor

The control flow for lobby is all over the shop so I pulled it all up from the individual controls so now they handle the bare minimum required and LobbyUIController handles the rest.

* a

* Bulk changes

* a

* weh

* Character import / export

* finalise

* woops this stuff too

* Also datafield exporting

* comments

* Review

Content.Client/Lobby/UI/LobbyCharacterPreviewPanel.xaml.cs

@@ -10,12 +10,16 @@ namespace Content.Client.Lobby.UI;
 [GenerateTypedNameReferences]
 public sealed partial class LobbyCharacterPreviewPanel : Control
 {
+    [Dependency] private readonly IEntityManager _entManager = default!;
+
     public Button CharacterSetupButton => CharacterSetup;
 
+    private EntityUid? _previewDummy;
+
     public LobbyCharacterPreviewPanel()
     {
         RobustXamlLoader.Load(this);
-        UserInterfaceManager.GetUIController<LobbyUIController>().SetPreviewPanel(this);
+        IoCManager.InjectDependencies(this);
     }
 
     public void SetLoaded(bool value)
@@ -26,11 +30,18 @@ public sealed partial class LobbyCharacterPreviewPanel : Control
 
     public void SetSummaryText(string value)
     {
-        Summary.Text = string.Empty;
+        Summary.Text = value;
     }
 
     public void SetSprite(EntityUid uid)
     {
+        if (_previewDummy != null)
+        {
+            _entManager.DeleteEntity(_previewDummy);
+        }
+
+        _previewDummy = uid;
+
         ViewBox.DisposeAllChildren();
         var spriteView = new SpriteView
         {
@@ -42,4 +53,11 @@ public sealed partial class LobbyCharacterPreviewPanel : Control
         spriteView.SetEntity(uid);
         ViewBox.AddChild(spriteView);
     }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+        _entManager.DeleteEntity(_previewDummy);
+        _previewDummy = null;
+    }
 }