Add queue overlay tests and stories (#7342)

## Summary
- add Playwright queue list fixture and coverage for toggle/count
display
- update queue overlay unit tests plus storybook stories for inline
progress and job item
- adjust useJobList expectations for ordered tasks

main <-- https://github.com/Comfy-Org/ComfyUI_frontend/pull/7336 <--
https://github.com/Comfy-Org/ComfyUI_frontend/pull/7338 <--
https://github.com/Comfy-Org/ComfyUI_frontend/pull/7342

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7342-Add-queue-overlay-tests-and-stories-2c66d73d365081ae8e32d6e34f87e1d9)
by [Unito](https://www.unito.io)

browser_tests/tests/queue/queueList.spec.ts

@@ -0,0 +1,157 @@
+import { expect, mergeTests } from '@playwright/test'
+
+import type { ComfyPage } from '../../fixtures/ComfyPage'
+import { comfyPageFixture } from '../../fixtures/ComfyPage'
+import { webSocketFixture } from '../../fixtures/ws'
+import type { WsMessage } from '../../fixtures/ws'
+
+const test = mergeTests(comfyPageFixture, webSocketFixture)
+
+type QueueState = {
+  running: QueueJob[]
+  pending: QueueJob[]
+}
+
+type QueueJob = [
+  string,
+  string,
+  Record<string, unknown>,
+  Record<string, unknown>,
+  string[]
+]
+
+type QueueController = {
+  state: QueueState
+  sync: (
+    ws: { trigger(data: WsMessage, url?: string): Promise<void> },
+    nextState: Partial<QueueState>
+  ) => Promise<void>
+}
+
+test.describe('Queue UI', () => {
+  let queue: QueueController
+
+  test.beforeEach(async ({ comfyPage }) => {
+    await comfyPage.page.route('**/api/prompt', async (route) => {
+      await route.fulfill({
+        status: 200,
+        contentType: 'application/json',
+        body: JSON.stringify({
+          prompt_id: 'mock-prompt-id',
+          number: 1,
+          node_errors: {}
+        })
+      })
+    })
+
+    // Mock history to avoid pulling real data
+    await comfyPage.page.route('**/api/history**', async (route) => {
+      await route.fulfill({
+        status: 200,
+        contentType: 'application/json',
+        body: JSON.stringify({ History: [] })
+      })
+    })
+
+    queue = await createQueueController(comfyPage)
+  })
+
+  test('toggles overlay and updates count from status events', async ({
+    comfyPage,
+    ws
+  }) => {
+    await queue.sync(ws, { running: [], pending: [] })
+
+    await expect(comfyPage.queueList.toggleButton).toContainText('0')
+    await expect(comfyPage.queueList.toggleButton).toContainText(/queued/i)
+    await expect(comfyPage.queueList.overlay).toBeHidden()
+
+    await queue.sync(ws, {
+      pending: [queueJob('1', 'mock-pending', 'client-a')]
+    })
+
+    await expect(comfyPage.queueList.toggleButton).toContainText('1')
+    await expect(comfyPage.queueList.toggleButton).toContainText(/queued/i)
+
+    await comfyPage.queueList.open()
+    await expect(comfyPage.queueList.overlay).toBeVisible()
+    await expect(comfyPage.queueList.jobItems).toHaveCount(1)
+
+    await comfyPage.queueList.close()
+    await expect(comfyPage.queueList.overlay).toBeHidden()
+  })
+
+  test('displays running and pending jobs via status updates', async ({
+    comfyPage,
+    ws
+  }) => {
+    await queue.sync(ws, {
+      running: [queueJob('2', 'mock-running', 'client-b')],
+      pending: [queueJob('3', 'mock-pending', 'client-c')]
+    })
+
+    await comfyPage.queueList.open()
+    await expect(comfyPage.queueList.jobItems).toHaveCount(2)
+
+    const firstJob = comfyPage.queueList.jobItems.first()
+    await firstJob.hover()
+
+    const cancelAction = firstJob
+      .getByTestId('job-action-cancel-running')
+      .or(firstJob.getByTestId('job-action-cancel-hover'))
+
+    await expect(cancelAction).toBeVisible()
+  })
+})
+
+const queueJob = (
+  queueIndex: string,
+  promptId: string,
+  clientId: string
+): QueueJob => [
+  queueIndex,
+  promptId,
+  { client_id: clientId },
+  { class_type: 'Note' },
+  ['output']
+]
+
+const createQueueController = async (
+  comfyPage: ComfyPage
+): Promise<QueueController> => {
+  const state: QueueState = { running: [], pending: [] }
+
+  // Single queue handler reads the latest in-memory state
+  await comfyPage.page.route('**/api/queue', async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: 'application/json',
+      body: JSON.stringify({
+        queue_running: state.running,
+        queue_pending: state.pending
+      })
+    })
+  })
+
+  const sync = async (
+    ws: { trigger(data: WsMessage, url?: string): Promise<void> },
+    nextState: Partial<QueueState>
+  ) => {
+    if (nextState.running) state.running = nextState.running
+    if (nextState.pending) state.pending = nextState.pending
+
+    const total = state.running.length + state.pending.length
+    const queueResponse = comfyPage.page.waitForResponse('**/api/queue')
+
+    await ws.trigger({
+      type: 'status',
+      data: {
+        status: { exec_info: { queue_remaining: total } }
+      }
+    })
+
+    await queueResponse
+  }
+
+  return { state, sync }
+}