Fix `-Winconsistent-missing-override` cascade of warnings during
build process.

--- src/desktop/view/Subsurface.hpp.orig	Tue Sep  1 14:52:21 2026
+++ src/desktop/view/Subsurface.hpp	Tue Sep  1 14:52:48 2026
@@ -24,11 +24,11 @@
 
         virtual ~CSubsurface() = default;
 
-        virtual eViewType              type() const;
-        virtual bool                   visible() const;
-        virtual std::optional<CBox>    logicalBox() const;
-        virtual bool                   desktopComponent() const;
-        virtual std::optional<CBox>    surfaceLogicalBox() const;
+        virtual eViewType              type() const override;
+        virtual bool                   visible() const override;
+        virtual std::optional<CBox>    logicalBox() const override;
+        virtual bool                   desktopComponent() const override;
+        virtual std::optional<CBox>    surfaceLogicalBox() const override;
         virtual Vector2D               position(eGeometricValueType) const override;
         virtual Vector2D               size(eGeometricValueType) const override;
         virtual CBox                   geometricBox(eGeometricValueType) const override;
