fix(ui): раскрывать большую очередь проблем порциями

tests/e2e/dashboard-data.spec.ts

@@ -265,3 +265,7 @@ for(const state of ["unmeasured","measured","failed","unknown"])test("Dashboard
  if(state==="unknown"){await expect(strip.getByText("Неизвестно",{exact:true})).toBeVisible();await expect(strip.getByText("Оффлайн",{exact:true})).toHaveCount(0)}
  await page.setViewportSize({width:320,height:900});await expect(strip).toBeVisible();expect(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth)).toBe(true)
 })
+
+test("Dashboard large attention queue mounts rows on demand",async({page},info)=>{
+ test.setTimeout(90000);const start=Date.now();await setup(page,false,1000);await expect(refresh(page)).toBeEnabled();const queue=page.getByRole("region",{name:"Требует внимания",exact:true});const links=queue.locator('a[href^="/servers?server="]');await expect(links).toHaveCount(5);const sample={fixtureRows:1000,readyMs:Date.now()-start,renderedAttentionRows:await links.count(),domNodes:await page.locator("*").count()};console.log(JSON.stringify(sample));await info.attach("large-attention-metrics",{body:JSON.stringify(sample),contentType:"application/json"});const summary=queue.locator("summary").filter({hasText:"Ещё 995"});await summary.focus();await summary.press("Enter");await expect(links).toHaveCount(55);await queue.getByRole("button",{name:"Показать ещё 50",exact:true}).click();await expect(links).toHaveCount(105);await summary.focus();await summary.press("Enter");await expect(links).toHaveCount(5);await summary.press("Enter");await expect(links).toHaveCount(55);await page.setViewportSize({width:320,height:900});expect(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth)).toBe(true);await links.first().click();await expect(page).toHaveURL(/servers\?server=1$/);await expect(page.getByRole("status",{name:"Сервер по ссылке"})).toContainText("Узел 1")
+})