[feat] Migrate to Jobs API (PR 2 of 3)

This PR switches the frontend from legacy /history and /queue endpoints
to the unified /jobs API.

Key changes:
- Rewrite TaskItemImpl in queueStore.ts to wrap JobListItem
- Update api.ts getQueue()/getHistory() to use Jobs API
- Update all queue composables (useJobList, useJobMenu, useResultGallery)
- Update useJobErrorReporting to use execution_error.exception_message
- Update JobGroupsList.vue workflowId access
- Update reconciliation.ts to work with JobListItem
- Update all related tests

Breaking changes:
- getQueue() now returns JobListItem[] instead of legacy tuple format
- getHistory() now returns JobListItem[] instead of HistoryTaskItem[]
- TaskItemImpl.outputs now lazily loads via loadFullOutputs()

Part of Jobs API migration. Depends on PR 1 (jobs-api-pr1-infrastructure).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

browser_tests/fixtures/ComfyPage.ts

@@ -21,7 +21,6 @@ import {
 import { Topbar } from './components/Topbar'
 import type { Position, Size } from './types'
 import { NodeReference, SubgraphSlotReference } from './utils/litegraphUtils'
-import TaskHistory from './utils/taskHistory'
 
 dotenv.config()
 
@@ -116,8 +115,6 @@ class ConfirmDialog {
 }
 
 export class ComfyPage {
-  private _history: TaskHistory | null = null
-
   public readonly url: string
   // All canvas position operations are based on default view of canvas.
   public readonly canvas: Locator
@@ -268,11 +265,6 @@ export class ComfyPage {
     }
   }
 
-  setupHistory(): TaskHistory {
-    this._history ??= new TaskHistory(this)
-    return this._history
-  }
-
   async setup({
     clearStorage = true,
     mockReleases = true