fix(ui): сохранять ошибку загрузки истории IPsec

tests/e2e/config-history.spec.ts

@@ -67,3 +67,48 @@ for (const section of ["wireguard", "ipsec", "gre", "firewall", "filters", "recu
     expect(errors.filter(error => !error.includes("403 (Forbidden)"))).toEqual([])
   })
 }
+
+test("История IPsec: ошибка, повтор и поздний ответ закрытой панели", async ({ page }) => {
+  let attempts = 0
+  let release: (() => void) | undefined
+  const gate = new Promise<void>(resolve => { release = resolve })
+  await page.route("**/health", route => route.fulfill({ json: { ok: true } }))
+  await page.route("**/api/**", async route => {
+    const path = new URL(route.request().url()).pathname
+    if (path === "/api/ipsec/revisions") {
+      attempts++
+      if (attempts === 1) return route.fulfill({ status: 403, json: { error: "История недоступна тест" } })
+      if (attempts === 2) {
+        await gate
+        return route.fulfill({ status: 500, json: { error: "Устаревшая ошибка тест" } })
+      }
+      if (attempts === 3) return route.fulfill({ json: {} })
+      return route.fulfill({ json: { revisions: [] } })
+    }
+    return route.fulfill({ json: path === "/api/auth/config" ? { required: false }
+      : path === "/api/ipsec" ? { servers: [], clients: [] }
+      : path === "/api/servers" ? [{ id: 1, name: "История роутер", host: "192.0.2.1", enabled: true, type: "exit-node", country: "RU", status: "online" }] : {} })
+  })
+  await page.goto("/ipsec")
+  await page.getByRole("option").filter({ hasText: "История роутер" }).click()
+  const open = page.getByRole("button", { name: "История", exact: true })
+  const sheet = page.getByRole("dialog", { name: "История конфигураций IPsec" })
+  await open.click()
+  await expect(sheet.getByRole("alert")).toContainText("История недоступна тест")
+  await expect(sheet.getByText("Истории пока нет", { exact: true })).toHaveCount(0)
+  await sheet.getByRole("button", { name: "Повторить загрузку" }).click()
+  await expect.poll(() => attempts).toBe(2)
+  await expect(sheet.getByRole("status")).toContainText("Загрузка истории")
+  await page.keyboard.press("Escape")
+  await expect(sheet).toHaveCount(0)
+  await open.click()
+  await expect(sheet.getByRole("alert")).toContainText("Некорректный ответ истории IPsec")
+  await sheet.getByRole("button", { name: "Повторить загрузку" }).click()
+  await expect(sheet.getByText("Истории пока нет", { exact: true })).toBeVisible()
+  const response = page.waitForResponse(r => r.url().includes("/api/ipsec/revisions?"))
+  release!()
+  await (await response).finished()
+  await page.waitForTimeout(150)
+  await expect(sheet.getByRole("alert")).toHaveCount(0)
+  await expect(sheet.getByText("Истории пока нет", { exact: true })).toBeVisible()
+})