feat: split job history into a dedicated sidebar tab (#8957)

## Summary

Move queue job history into a dedicated sidebar tab (gated by `Comfy.Queue.QPOV2`) and remove mixed job-history UI from the Assets sidebar so assets and job controls are separated.

## Changes

- **What**:
  - Added `JobHistorySidebarTab` with reusable job UI primitives: `JobFilterTabs`, `JobFilterActions`, `JobAssetsList`, and shared `JobHistoryActionsMenu`.
  - Added reactive `job-history` tab registration in `sidebarTabStore`; prepends above Assets when `Comfy.Queue.QPOV2` is enabled and unregisters cleanly when disabled.
  - Added debounced search to `useJobList` (filters by job title, metadata, and prompt id).
  - Extracted clear-history dialog logic to `useQueueClearHistoryDialog` and reused it from queue overlay and job history tab.
  - Removed active-job rendering and queue-clear controls from assets list/grid/tab views; assets sidebar now focuses on media assets only.
  - Removed the QPOV2 gate from `MediaAssetViewModeToggle` and updated queue/job localized copy.
  - Added and updated tests for queue overlay header actions, job filters, search filtering, sidebar tab registration, and assets sidebar behavior.

## Review Focus

- Verify QPOV2 toggle behavior:
  - `Docked Job History` menu action toggles `Comfy.Queue.QPOV2`.
  - `job-history` tab insertion/removal order and active-tab reset on removal.
- Verify behavior split between tabs:
  - Job controls (cancel/delete/view/filter/search/clear history/clear queue) live in Job History.
  - Assets sidebar loading/empty states and list/grid rendering remain correct after removing active jobs.

## Screenshots (if applicable)
<img width="670" height="707" alt="image" src="https://github.com/user-attachments/assets/3a201fcb-d104-4e95-b5fe-49c4006a30a5" />

src/components/sidebar/tabs/AssetsSidebarGridView.vue

@@ -1,23 +1,7 @@
 <template>
   <div class="flex h-full flex-col">
-    <!-- Active Jobs Grid -->
-    <div
-      v-if="!isInFolderView && isQueuePanelV2Enabled && activeJobItems.length"
-      class="grid max-h-[50%] scrollbar-custom overflow-y-auto"
-      :style="gridStyle"
-    >
-      <ActiveMediaAssetCard
-        v-for="job in activeJobItems"
-        :key="job.id"
-        :job="job"
-      />
-    </div>
-
     <!-- Assets Header -->
-    <div
-      v-if="assets.length"
-      :class="cn('px-2 2xl:px-4', activeJobItems.length && 'mt-2')"
-    >
+    <div v-if="assets.length" class="px-2 2xl:px-4">
       <div
         class="flex items-center py-2 text-sm font-normal leading-normal text-muted-foreground font-inter"
       >
@@ -59,25 +43,18 @@ import { computed } from 'vue'
 import { useI18n } from 'vue-i18n'
 
 import VirtualGrid from '@/components/common/VirtualGrid.vue'
-import ActiveMediaAssetCard from '@/platform/assets/components/ActiveMediaAssetCard.vue'
-import { useJobList } from '@/composables/queue/useJobList'
 import MediaAssetCard from '@/platform/assets/components/MediaAssetCard.vue'
 import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
-import { isActiveJobState } from '@/utils/queueUtil'
-import { cn } from '@/utils/tailwindUtil'
-import { useSettingStore } from '@/platform/settings/settingStore'
 
 const {
   assets,
   isSelected,
-  isInFolderView = false,
   assetType = 'output',
   showOutputCount,
   getOutputCount
 } = defineProps<{
   assets: AssetItem[]
   isSelected: (assetId: string) => boolean
-  isInFolderView?: boolean
   assetType?: 'input' | 'output'
   showOutputCount: (asset: AssetItem) => boolean
   getOutputCount: (asset: AssetItem) => number
@@ -92,19 +69,9 @@ const emit = defineEmits<{
 }>()
 
 const { t } = useI18n()
-const { jobItems } = useJobList()
-const settingStore = useSettingStore()
-
-const isQueuePanelV2Enabled = computed(() =>
-  settingStore.get('Comfy.Queue.QPOV2')
-)
 
 type AssetGridItem = { key: string; asset: AssetItem }
 
-const activeJobItems = computed(() =>
-  jobItems.value.filter((item) => isActiveJobState(item.state)).toReversed()
-)
-
 const assetItems = computed<AssetGridItem[]>(() =>
   assets.map((asset) => ({
     key: `asset-${asset.id}`,