Fix lint errors

src/components/date.test.tsx

@@ -1,5 +1,6 @@
 import { expect, it } from "vitest";
 import { DateString } from "./date";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders correctly", () => {

src/components/footer.test.tsx

@@ -1,5 +1,6 @@
 import { expect, it } from "vitest";
 import { Footer } from "./footer";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders correctly", () => {

src/components/header.test.tsx

@@ -1,5 +1,6 @@
 import { expect, it } from "vitest";
 import { Header } from "./header";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders correctly", () => {

src/components/navigation.test.tsx

@@ -1,5 +1,6 @@
 import { expect, it } from "vitest";
 import { Navigation } from "./navigation";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders correctly", () => {

src/components/prev-next-link.test.tsx

@@ -1,5 +1,6 @@
 import { expect, it } from "vitest";
 import { PrevNextLink } from "./prev-next-link";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders both prev and next correctly", () => {

src/components/questions.test.tsx

@@ -1,5 +1,6 @@
 import { expect, it } from "vitest";
 import { Questions } from "./questions";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders correctly", () => {

src/components/sns-link.test.tsx

@@ -1,4 +1,5 @@
 import { expect, it } from "vitest";
+import React from "react";
 import { SNSLink } from "./sns-link";
 import { render } from "../../utils/react-test";
 

src/components/title.test.tsx

@@ -1,5 +1,6 @@
 import { Subtitle, Title } from "./title";
 import { expect, it } from "vitest";
+import React from "react";
 import { render } from "../../utils/react-test";
 
 it("renders title correctly", () => {