Unify dock leaves around single-tab stacks

new_editor/include/XCEditor/Shell/UIEditorDockHost.h

@@ -96,15 +96,6 @@ struct UIEditorDockHostSplitterLayout {
     bool active = false;
 };
 
-struct UIEditorDockHostPanelLayout {
-    std::string nodeId = {};
-    std::string panelId = {};
-    std::string title = {};
-    bool active = false;
-    UIEditorPanelFrameState frameState = {};
-    UIEditorPanelFrameLayout frameLayout = {};
-};
-
 struct UIEditorDockHostTabStackLayout {
     std::string nodeId = {};
     std::string selectedPanelId = {};
@@ -119,7 +110,6 @@ struct UIEditorDockHostTabStackLayout {
 struct UIEditorDockHostLayout {
     ::XCEngine::UI::UIRect bounds = {};
     std::vector<UIEditorDockHostSplitterLayout> splitters = {};
-    std::vector<UIEditorDockHostPanelLayout> panels = {};
     std::vector<UIEditorDockHostTabStackLayout> tabStacks = {};
 };
 

new_editor/include/XCEditor/Shell/UIEditorWorkspaceModel.h

@@ -78,6 +78,12 @@ UIEditorWorkspaceNode BuildUIEditorWorkspacePanel(
     std::string title,
     bool placeholder = false);
 
+UIEditorWorkspaceNode BuildUIEditorWorkspaceSingleTabStack(
+    std::string nodeId,
+    std::string panelId,
+    std::string title,
+    bool placeholder = false);
+
 UIEditorWorkspaceNode BuildUIEditorWorkspaceTabStack(
     std::string nodeId,
     std::vector<UIEditorWorkspaceNode> panels,
@@ -93,6 +99,9 @@ UIEditorWorkspaceNode BuildUIEditorWorkspaceSplit(
 UIEditorWorkspaceValidationResult ValidateUIEditorWorkspace(
     const UIEditorWorkspaceModel& workspace);
 
+UIEditorWorkspaceModel CanonicalizeUIEditorWorkspaceModel(
+    UIEditorWorkspaceModel workspace);
+
 std::vector<UIEditorWorkspaceVisiblePanel> CollectUIEditorWorkspaceVisiblePanels(
     const UIEditorWorkspaceModel& workspace);