fix(titlebar): reserve Windows window controls for logo

tests/unit/title-bar.test.tsx

@@ -188,14 +188,15 @@ describe('TitleBar platform behavior', () => {
     expect(onSidebarPeekChange).toHaveBeenNthCalledWith(2, false, 'titlebar');
   });
 
-  it('renders custom controls on Windows', async () => {
+  it('renders custom controls and reserves their space on Windows', async () => {
     window.electron.platform = 'win32';
 
-    render(<TitleBar />);
+    render(<TitleBar integrated />);
 
     expect(screen.getByTitle('Minimize')).toBeInTheDocument();
     expect(screen.getByTitle('Maximize')).toBeInTheDocument();
     expect(screen.getByTitle('Close')).toBeInTheDocument();
+    expect(screen.getByTestId('titlebar-logo')).toHaveStyle({ right: '148px' });
 
     await waitFor(() => {
       expect(invokeIpcMock).toHaveBeenCalledWith('window:isMaximized');