chore: remove dead browser test fixture after Jobs API migration (#8099)

## Summary

Removes  which is dead code left over from the Jobs API migration.

## Details

This fixture file:
- References legacy and types that were removed in the Jobs API
migration
- Is not referenced anywhere in the codebase
- Cannot be used since the types it imports no longer exist

## Related PRs

Follow-up cleanup to the Jobs API migration:
- #7169 - Add Jobs API infrastructure (PR 1 of 3)
- #7170 - Migrate to Jobs API (PR 2 of 3)  
- #7650 - Encapsulate error extraction in TaskItemImpl getters

## Testing

- ✅ Typecheck passes
- ✅ No references to this file in the codebase
- ✅ File imports types that no longer exist (cannot be used)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8099-chore-remove-dead-browser-test-fixture-after-Jobs-API-migration-2ea6d73d36508172be89c9c5a74b33ee)
by [Unito](https://www.unito.io)

browser_tests/fixtures/utils/taskHistory.ts

@@ -1,164 +0,0 @@
-import type { Request, Route } from '@playwright/test'
-import _ from 'es-toolkit/compat'
-import fs from 'fs'
-import path from 'path'
-import { v4 as uuidv4 } from 'uuid'
-
-import type {
-  HistoryTaskItem,
-  TaskItem,
-  TaskOutput
-} from '../../../src/schemas/apiSchema'
-import type { ComfyPage } from '../ComfyPage'
-
-/** keyof TaskOutput[string] */
-type OutputFileType = 'images' | 'audio' | 'animated'
-
-const DEFAULT_IMAGE = 'example.webp'
-
-const getFilenameParam = (request: Request) => {
-  const url = new URL(request.url())
-  return url.searchParams.get('filename') || DEFAULT_IMAGE
-}
-
-const getContentType = (filename: string, fileType: OutputFileType) => {
-  const subtype = path.extname(filename).slice(1)
-  switch (fileType) {
-    case 'images':
-      return `image/${subtype}`
-    case 'audio':
-      return `audio/${subtype}`
-    case 'animated':
-      return `video/${subtype}`
-  }
-}
-
-const setQueueIndex = (task: TaskItem) => {
-  task.prompt[0] = TaskHistory.queueIndex++
-}
-
-const setPromptId = (task: TaskItem) => {
-  task.prompt[1] = uuidv4()
-}
-
-export default class TaskHistory {
-  static queueIndex = 0
-  static readonly defaultTask: Readonly<HistoryTaskItem> = {
-    prompt: [0, 'prompt-id', {}, { client_id: uuidv4() }, []],
-    outputs: {},
-    status: {
-      status_str: 'success',
-      completed: true,
-      messages: []
-    },
-    taskType: 'History'
-  }
-  private tasks: HistoryTaskItem[] = []
-  private outputContentTypes: Map<string, string> = new Map()
-
-  constructor(readonly comfyPage: ComfyPage) {}
-
-  private loadAsset: (filename: string) => Buffer = _.memoize(
-    (filename: string) => {
-      const filePath = this.comfyPage.assetPath(filename)
-      return fs.readFileSync(filePath)
-    }
-  )
-
-  private async handleGetHistory(route: Route) {
-    return route.fulfill({
-      status: 200,
-      contentType: 'application/json',
-      body: JSON.stringify(this.tasks)
-    })
-  }
-
-  private async handleGetView(route: Route) {
-    const fileName = getFilenameParam(route.request())
-    if (!this.outputContentTypes.has(fileName)) {
-      return route.continue()
-    }
-
-    const asset = this.loadAsset(fileName)
-    return route.fulfill({
-      status: 200,
-      contentType: this.outputContentTypes.get(fileName),
-      body: asset,
-      headers: {
-        'Cache-Control': 'public, max-age=31536000',
-        'Content-Length': asset.byteLength.toString()
-      }
-    })
-  }
-
-  async setupRoutes() {
-    return this.comfyPage.page.route(
-      /.*\/api\/(view|history)(\?.*)?$/,
-      async (route) => {
-        const request = route.request()
-        const method = request.method()
-
-        const isViewReq = request.url().includes('view') && method === 'GET'
-        if (isViewReq) return this.handleGetView(route)
-
-        const isHistoryPath = request.url().includes('history')
-        const isGetHistoryReq = isHistoryPath && method === 'GET'
-        if (isGetHistoryReq) return this.handleGetHistory(route)
-
-        const isClearReq =
-          method === 'POST' &&
-          isHistoryPath &&
-          request.postDataJSON()?.clear === true
-        if (isClearReq) return this.clearTasks()
-
-        return route.continue()
-      }
-    )
-  }
-
-  private createOutputs(
-    filenames: string[],
-    filetype: OutputFileType
-  ): TaskOutput {
-    return filenames.reduce((outputs, filename, i) => {
-      const nodeId = `${i + 1}`
-      outputs[nodeId] = {
-        [filetype]: [{ filename, subfolder: '', type: 'output' }]
-      }
-      const contentType = getContentType(filename, filetype)
-      this.outputContentTypes.set(filename, contentType)
-      return outputs
-    }, {})
-  }
-
-  private addTask(task: HistoryTaskItem) {
-    setPromptId(task)
-    setQueueIndex(task)
-    this.tasks.unshift(task) // Tasks are added to the front of the queue
-  }
-
-  clearTasks(): this {
-    this.tasks = []
-    return this
-  }
-
-  withTask(
-    outputFilenames: string[],
-    outputFiletype: OutputFileType = 'images',
-    overrides: Partial<HistoryTaskItem> = {}
-  ): this {
-    this.addTask({
-      ...TaskHistory.defaultTask,
-      outputs: this.createOutputs(outputFilenames, outputFiletype),
-      ...overrides
-    })
-    return this
-  }
-
-  /** Repeats the last task in the task history a specified number of times. */
-  repeat(n: number): this {
-    for (let i = 0; i < n; i++)
-      this.addTask(structuredClone(this.tasks.at(0)) as HistoryTaskItem)
-    return this
-  }
-}