Fix chat visibility and conversation sync

tests/dashboard/conversations.test.tsx

@@ -179,6 +179,14 @@ describe('ConversationsPage', () => {
       'src',
       '/media/received%20image.jpg',
     );
+    expect(screen.getByRole('link', { name: 'View original image received from u/alice' })).toHaveAttribute(
+      'href',
+      '/media/received%20image.jpg',
+    );
+    expect(screen.getByRole('link', { name: 'View original image received from u/alice' })).toHaveAttribute(
+      'target',
+      '_blank',
+    );
   });
 
   it('turns a suggestion into an editable draft and confirms sending without losing failed input', async () => {