fix(ui): проверять подтверждение импорта WireGuard

tests/e2e/wireguard-links.spec.ts

@@ -175,3 +175,35 @@ for (const kind of ["iface", "peer"] as const) {
     expect(attempts).toBe(3)
   })
 }
+
+test("WireGuard: импорт сохраняет форму без подтверждения применения", async ({ page }) => {
+  await setup(page, "/wireguard?server=1")
+  let attempts = 0
+  const preview = { format: "rsc", interface: { name: "wg-import-test" }, peers: [] }
+  const content = "/interface wireguard add name=wg-import-test listen-port=13231"
+  await page.route("**/api/wireguard/import", async route => {
+    expect(route.request().postDataJSON()).toEqual({ serverId: "1", content, format: "auto", dryRun: false })
+    attempts++
+    if (attempts === 1) return route.fulfill({ status: 403, json: { error: "Нет доступа к импорту" } })
+    if (attempts === 2) return route.fulfill({ json: { dryRun: true, preview } })
+    if (attempts === 3) return route.fulfill({ json: { dryRun: false, preview } })
+    if (attempts === 4) return route.fulfill({ json: {} })
+    return route.fulfill({ json: { dryRun: false, preview, applied: { interfaceName: "wg-import-test", peersCreated: 0 } } })
+  })
+  await page.getByRole("button", { name: "Импорт", exact: true }).click()
+  const dialog = page.getByRole("dialog", { name: "Импорт конфига WireGuard" })
+  await dialog.locator("textarea").fill(content)
+  for (const message of ["Нет доступа к импорту", "Сервер не подтвердил применение конфигурации", "Сервер не подтвердил применение конфигурации", "Некорректный ответ импорта WireGuard"]) {
+    const before = attempts
+    await dialog.getByRole("button", { name: "Применить на роутер" }).click()
+    await expect.poll(() => attempts).toBe(before + 1)
+    await expect(page.getByText(message, { exact: true }).first()).toBeVisible()
+    await expect(dialog.locator("textarea")).toHaveValue(content)
+    await expect(dialog.locator("select").first()).toHaveValue("1")
+    await expect(dialog.getByRole("button", { name: "Применить на роутер" })).toBeEnabled()
+  }
+  await dialog.getByRole("button", { name: "Применить на роутер" }).click()
+  await expect(dialog).toHaveCount(0)
+  await expect(page.getByText("Импортировано: wg-import-test (+0 пиров)", { exact: true })).toBeVisible()
+  expect(attempts).toBe(5)
+})