fix(ui): блокировать изменение проб во время Speed-test

tests/e2e/uptime-links.spec.ts

@@ -371,3 +371,32 @@ test("звезда дашборда: состояние меняется пос
   await expect(page.getByRole("button", { name: "Убрать с дашборда", exact: true })).toHaveAttribute("aria-pressed", "true")
   expect(calls).toBe(2)
 })
+
+test("Speed-test: один запуск, запись проб заблокирована до ответа и освобождается при ошибке", async ({ page }) => {
+  await setup(page, "/uptime?probe=p1", 0, false, "mm:uptime:write")
+  await page.getByRole("button", { name: "Пауза", exact: true }).click()
+  await page.getByRole("button", { name: /Скорость/ }).click()
+  let calls = 0
+  let release!: () => void
+  const pending = new Promise<void>(resolve => { release = resolve })
+  await page.route("**/api/uptime/speed-test", async route => {
+    calls++
+    await pending
+    await route.fulfill({ status: 500, json: { error: "Измерение отклонено" } })
+  })
+  const run = page.getByRole("button", { name: "Запустить", exact: true })
+  await run.evaluate(button => { (button as HTMLButtonElement).click(); (button as HTMLButtonElement).click() })
+  await expect(run).toBeDisabled()
+  await expect(page.getByRole("button", { name: "Удалить speed-пробу", exact: true })).toBeDisabled()
+  await expect(page.getByRole("button", { name: "Редактировать speed-пробу", exact: true })).toBeDisabled()
+  await expect(page.getByRole("switch")).toBeDisabled()
+  await expect.poll(() => calls).toBe(1)
+  await page.getByRole("button", { name: /Пинг-пробы/ }).click()
+  await expect(page.getByRole("button", { name: "Показать на дашборде", exact: true })).toBeDisabled()
+  await expect(page.getByRole("button", { name: "Обновить", exact: true })).toBeDisabled()
+  release()
+  await expect(page.getByRole("button", { name: "Показать на дашборде", exact: true })).toBeEnabled()
+  await page.getByRole("button", { name: /Скорость/ }).click()
+  await expect(run).toBeEnabled()
+  await expect(page.getByText("Измерение отклонено", { exact: true }).first()).toBeVisible()
+})