fix(ui): защитить форму импорта WireGuard во время запроса

tests/e2e/wireguard-links.spec.ts

@@ -207,3 +207,47 @@ test("WireGuard: импорт сохраняет форму без подтве
   await expect(page.getByText("Импортировано: wg-import-test (+0 пиров)", { exact: true })).toBeVisible()
   expect(attempts).toBe(5)
 })
+
+test("WireGuard: импорт удерживает форму до ответа и разрешает повтор", async ({ page }) => {
+  await setup(page, "/wireguard?server=1")
+  let attempts = 0
+  let release: (() => void) | undefined
+  const gate = new Promise<void>(resolve => { release = resolve })
+  const content = "/interface wireguard add name=wg-wait"
+  await page.route("**/api/wireguard/import", async route => {
+    expect(route.request().postDataJSON()).toEqual({ serverId: "1", content, format: "auto", dryRun: false })
+    attempts++
+    if (attempts === 1) {
+      await gate
+      return route.fulfill({ status: 500, json: { error: "Ошибка импорта тест" } })
+    }
+    return route.fulfill({ json: { dryRun: false, preview: { format: "rsc", interface: { name: "wg-wait" }, peers: [] }, applied: { interfaceName: "wg-wait", peersCreated: 0 } } })
+  })
+  await page.getByRole("button", { name: "Импорт", exact: true }).click()
+  const dialog = page.getByRole("dialog", { name: "Импорт конфига WireGuard" })
+  await dialog.getByRole("textbox", { name: "Конфигурация WireGuard" }).fill(content)
+  const submit = dialog.getByRole("button", { name: "Применить на роутер" })
+  await submit.evaluate(button => { (button as HTMLButtonElement).click(); (button as HTMLButtonElement).click() })
+  await expect.poll(() => attempts).toBe(1)
+  await expect(dialog.getByRole("status")).toContainText("Ожидание результата")
+  await expect(dialog.getByRole("textbox")).toBeDisabled()
+  await expect(dialog.getByRole("combobox", { name: "Сервер" })).toBeDisabled()
+  await expect(dialog.getByRole("combobox", { name: "Формат" })).toBeDisabled()
+  await expect(dialog.getByRole("button", { name: "Отмена" })).toBeDisabled()
+  await expect(dialog.getByRole("button", { name: "Закрыть", exact: true })).toHaveCount(0)
+  await page.keyboard.press("Escape")
+  await page.mouse.click(10, 300)
+  await expect(dialog).toBeVisible()
+  expect(attempts).toBe(1)
+  release!()
+  await expect(dialog.getByRole("alert")).toHaveText("Ошибка импорта тест")
+  await expect(dialog.getByRole("textbox")).toHaveValue(content)
+  await expect(submit).toBeEnabled()
+  await submit.click()
+  await expect(dialog).toHaveCount(0)
+  expect(attempts).toBe(2)
+  await page.getByRole("button", { name: "Импорт", exact: true }).click()
+  await expect(dialog.getByRole("alert")).toHaveCount(0)
+  await page.keyboard.press("Escape")
+  await expect(dialog).toHaveCount(0)
+})