diff --git a/end2end/tests/undo.spec.ts b/end2end/tests/undo.spec.ts
new file mode 100644
index 0000000..fc5a47a
--- /dev/null
+++ b/end2end/tests/undo.spec.ts
@@ -0,0 +1,106 @@
+import { test, expect, type Page } from "@playwright/test";
+
+// Override with BASE_URL (e.g. when the dev server runs on another port).
+const BASE = process.env.BASE_URL ?? "http://localhost:3000";
+
+// Collects browser console errors and page errors for the duration of a test.
+function trackErrors(page: Page): string[] {
+  const errors: string[] = [];
+  page.on("console", (msg) => {
+    if (msg.type() === "error") {
+      errors.push(msg.text());
+    }
+  });
+  page.on("pageerror", (err) => {
+    errors.push(String(err));
+  });
+  return errors;
+}
+
+// Autosave is debounced at 500 ms; give it time before reloading.
+const DEBOUNCE_MS = 700;
+
+test("undo and redo a campaign name edit", async ({ page }) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/`);
+
+  const original = await page.locator("#campaign-name").inputValue();
+  const undo = page.getByRole("button", { name: "Отменить" });
+  const redo = page.getByRole("button", { name: "Вернуть" });
+
+  // Fresh history: both buttons are disabled.
+  await expect(undo).toBeDisabled();
+  await expect(redo).toBeDisabled();
+
+  // One edit burst; the undo button wakes up immediately (the burst does
+  // not need to settle first).
+  const edited = "Имя для отмены";
+  await page.locator("#campaign-name").fill(edited);
+  await expect(undo).toBeEnabled();
+
+  await undo.click();
+  await expect(page.locator("#campaign-name")).toHaveValue(original);
+
+  await redo.click();
+  await expect(page.locator("#campaign-name")).toHaveValue(edited);
+
+  // Keyboard: Ctrl+Z outside a text field undoes the redo.
+  await page.locator(".version").click();
+  await page.keyboard.press("Control+z");
+  await expect(page.locator("#campaign-name")).toHaveValue(original);
+
+  expect(errors).toEqual([]);
+});
+
+test("Ctrl+Z inside a text field keeps the browser's native undo", async ({
+  page,
+}) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/`);
+
+  const input = page.locator("#campaign-name");
+  await input.fill("Текст набран в поле");
+  await input.press("Control+z");
+
+  // The app-wide handler must not fire while the field has focus: the
+  // undo button stays enabled (the pending burst is still undoable).
+  // The field's own value change is the browser's native undo — it
+  // owns Ctrl+Z inside text fields by design.
+  await expect(page.getByRole("button", { name: "Отменить" })).toBeEnabled();
+
+  expect(errors).toEqual([]);
+});
+
+test("undone state survives a reload", async ({ page }) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/`);
+
+  const original = await page.locator("#campaign-name").inputValue();
+  const edited = "Будет отменено до перезагрузки";
+  await page.locator("#campaign-name").fill(edited);
+  await page.getByRole("button", { name: "Отменить" }).click();
+  await expect(page.locator("#campaign-name")).toHaveValue(original);
+
+  // The undo went through the autosave path; wait for the debounce.
+  await page.waitForTimeout(DEBOUNCE_MS);
+  await page.reload();
+  await expect(page.locator("#campaign-name")).toHaveValue(original);
+
+  expect(errors).toEqual([]);
+});
+
+test("clear is undoable", async ({ page }) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/`);
+
+  const original = await page.locator("#campaign-name").inputValue();
+  await page.getByRole("button", { name: "Очистить" }).click();
+  await page.locator(".modal").getByRole("button", { name: "Очистить" }).click();
+  await expect(page.locator("#campaign-name")).toHaveValue("");
+
+  // One undo step restores everything the clear replaced.
+  await page.getByRole("button", { name: "Отменить" }).click();
+  await expect(page.locator("#campaign-name")).toHaveValue(original);
+
+  expect(errors).toEqual([]);
+});