refactor: tighten types and reuse instrument UI

src/features/auth/model/auth.test.tsx

@@ -345,12 +345,12 @@ describe("AuthProvider", () => {
 		);
 
 		await waitFor(() =>
-			expect(result.current.cards.data?.[0].id).toBe("a-card"),
+			expect(result.current.cards.data?.[0]?.id).toBe("a-card"),
 		);
 		identity = "b";
 		await act(() => expireSession());
 		await waitFor(() =>
-			expect(result.current.cards.data?.[0].id).toBe("b-card"),
+			expect(result.current.cards.data?.[0]?.id).toBe("b-card"),
 		);
 	});
 });