feat: implement NodeLibrarySidebarTabV2 with Reka UI components (#8548)

## Summary

Implement a redesigned Node Library sidebar using Reka UI components
with virtualized tree rendering and improved UX.

## Changes

- **What**: 
  - Add three-tab structure (Essential, All, Custom) using Reka UI Tabs
- Implement TreeExplorerV2 with virtualized tree using
TreeRoot/TreeVirtualizer for performance
  - Add node hover preview with teleport to show NodePreview component
  - Implement context menu for toggling favorites on nodes
  - Add search functionality that auto-expands matching folders
- Create panel components: EssentialNodesPanel, AllNodesPanel,
CustomNodesPanel
  - Add 'Open Manager' button in CustomNodesPanel
  - Use custom icons: comfy--node for nodes, ph--folder-fill for folders
  - New node preview component: `NodePreviewCard`
  - Api node folder icon
  - Node drag preview

- **Feature Flag**: Enabled via URL parameter `?nodeRedesign=true`

## Review Focus

- TreeExplorerV2.vue uses `[...expandedKeys]` to prevent internal
mutation by Reka UI TreeRoot
- Context menu injection key is exported from TreeExplorerV2Node.vue and
imported by TreeExplorerV2.vue
- Hover preview uses teleport to
`#node-library-node-preview-container-v2`

## Screenshots (if applicable)

| Feature | Screenshot | 
|---|---|
| All nodes tab |<img width="323" height="761" alt="image"
src="https://github.com/user-attachments/assets/1976222b-83dc-4a1b-838a-2d49aedea3b8"
/>|
| Custom nodes tab | <img width="308" height="748" alt="image"
src="https://github.com/user-attachments/assets/2c23bffb-bdaa-4c6c-8cac-7610fb7f3fb7"
/>|
|Api nodes icon | <img width="299" height="523" alt="image"
src="https://github.com/user-attachments/assets/e9ca05b0-1143-44cf-b227-6462173c7cd0"
/>|
| node preview|<img width="499" height="544" alt="image"
src="https://github.com/user-attachments/assets/8961a7b4-77ae-4e57-99cf-62d9e4e17088"
/>|
| node drag preview | <img width="434" height="289" alt="image"
src="https://github.com/user-attachments/assets/b5838c90-65d4-4bee-b2b3-c41b57870da8"
/>|



Test by adding `?nodeRedesign=true` to the URL

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8548-WIP-feat-implement-NodeLibrarySidebarTabV2-with-Reka-UI-components-2fb6d73d36508134b7e0f75a2c9b976a)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: bymyself <cbyrne@comfy.org>

src/components/sidebar/tabs/NodeLibrarySidebarTabV2.test.ts

@@ -113,7 +113,7 @@ describe('NodeLibrarySidebarTabV2', () => {
     const wrapper = mountComponent()
 
     const triggers = wrapper.findAllComponents(TabsTrigger)
-    expect(triggers.length).toBe(3)
+    expect(triggers).toHaveLength(3)
   })
 
   it('should render search box', () => {

src/components/sidebar/tabs/NodeLibrarySidebarTabV2.vue

@@ -94,7 +94,7 @@
 </template>
 
 <script setup lang="ts">
-import { cn } from '@comfyorg/tailwind-utils'
+import { cn } from '@/utils/tailwindUtil'
 import { useLocalStorage } from '@vueuse/core'
 import {
   DropdownMenuContent,
@@ -114,6 +114,7 @@ import { useI18n } from 'vue-i18n'
 
 import SearchBox from '@/components/common/SearchBoxV2.vue'
 import { useNodeDragToCanvas } from '@/composables/node/useNodeDragToCanvas'
+import { usePerTabState } from '@/composables/usePerTabState'
 import {
   DEFAULT_SORTING_ID,
   DEFAULT_TAB_ID,
@@ -148,15 +149,7 @@ const sortOrderByTab = useLocalStorage<Record<TabId, SortingStrategyId>>(
     custom: 'alphabetical'
   }
 )
-const sortOrder = computed({
-  get: () => sortOrderByTab.value[selectedTab.value],
-  set: (value) => {
-    sortOrderByTab.value = {
-      ...sortOrderByTab.value,
-      [selectedTab.value]: value
-    }
-  }
-})
+const sortOrder = usePerTabState(selectedTab, sortOrderByTab)
 
 const sortingOptions = computed(() =>
   nodeOrganizationService.getSortingStrategies().map((strategy) => ({
@@ -174,12 +167,7 @@ const expandedKeysByTab = ref<Record<TabId, string[]>>({
   all: [],
   custom: []
 })
-const expandedKeys = computed({
-  get: () => expandedKeysByTab.value[selectedTab.value],
-  set: (value) => {
-    expandedKeysByTab.value[selectedTab.value] = value
-  }
-})
+const expandedKeys = usePerTabState(selectedTab, expandedKeysByTab)
 
 const nodeDefStore = useNodeDefStore()
 const { startDrag } = useNodeDragToCanvas()

src/components/sidebar/tabs/nodeLibrary/AllNodesPanel.vue

@@ -10,6 +10,7 @@
       <TreeExplorerV2
         v-model:expanded-keys="expandedKeys"
         :root="favoritesRoot"
+        show-context-menu
         @node-click="(node) => emit('nodeClick', node)"
         @add-to-favorites="handleAddToFavorites"
       />
@@ -26,6 +27,7 @@
       <TreeExplorerV2
         v-model:expanded-keys="expandedKeys"
         :root="section.root"
+        show-context-menu
         @node-click="(node) => emit('nodeClick', node)"
         @add-to-favorites="handleAddToFavorites"
       />

src/components/sidebar/tabs/nodeLibrary/EssentialNodeCard.vue

@@ -1,13 +1,7 @@
 <template>
   <div
-    :class="
-      cn(
-        'flex flex-col items-center justify-center py-4 px-2 rounded-2xl cursor-pointer select-none transition-colors duration-150 box-content',
-        'bg-component-node-background hover:bg-secondary-background-hover border border-component-node-border',
-        'aspect-square'
-      )
-    "
-    :data-node-name="nodeDef?.display_name"
+    class="group relative flex flex-col items-center justify-center py-4 px-2 rounded-2xl cursor-pointer select-none transition-colors duration-150 box-content bg-component-node-background hover:bg-secondary-background-hover border border-component-node-border aspect-square"
+    :data-node-name="node.data?.display_name"
     draggable="true"
     @click="handleClick"
     @dragstart="handleDragStart"
@@ -18,11 +12,12 @@
     <div class="flex flex-1 items-center justify-center">
       <i :class="cn(nodeIcon, 'size-14 text-muted-foreground')" />
     </div>
-    <span
-      class="shrink-0 h-8 text-sm font-bold text-center text-foreground line-clamp-2 leading-4"
+
+    <TextTickerMultiLine
+      class="shrink-0 h-8 w-full text-xs font-bold text-foreground leading-4"
     >
-      {{ nodeDef?.display_name }}
-    </span>
+      {{ node.data?.display_name }}
+    </TextTickerMultiLine>
   </div>
 
   <Teleport v-if="showPreview" to="body">
@@ -30,7 +25,10 @@
       :ref="(el) => (previewRef = el as HTMLElement)"
       :style="nodePreviewStyle"
     >
-      <NodePreviewCard :node-def="nodeDef!" :show-inputs-and-outputs="false" />
+      <NodePreviewCard
+        :node-def="node.data!"
+        :show-inputs-and-outputs="false"
+      />
     </div>
   </Teleport>
 </template>
@@ -39,6 +37,7 @@
 import { kebabCase } from 'es-toolkit/string'
 import { computed, inject } from 'vue'
 
+import TextTickerMultiLine from '@/components/common/TextTickerMultiLine.vue'
 import NodePreviewCard from '@/components/node/NodePreviewCard.vue'
 import { SidebarContainerKey } from '@/components/sidebar/tabs/SidebarTabTemplate.vue'
 import { useNodePreviewAndDrag } from '@/composables/node/useNodePreviewAndDrag'
@@ -54,9 +53,8 @@ const emit = defineEmits<{
   click: [node: RenderedTreeExplorerNode<ComfyNodeDefImpl>]
 }>()
 
-const nodeDef = computed(() => node.data)
-
 const panelRef = inject(SidebarContainerKey, undefined)
+const nodeDef = computed(() => node.data)
 
 const {
   previewRef,
@@ -69,13 +67,13 @@ const {
 } = useNodePreviewAndDrag(nodeDef, { panelRef })
 
 const nodeIcon = computed(() => {
-  const nodeName = nodeDef.value?.name
+  const nodeName = node.data?.name
   const iconName = nodeName ? kebabCase(nodeName) : 'node'
   return `icon-[comfy--${iconName}]`
 })
 
 function handleClick() {
-  if (!nodeDef.value) return
+  if (!node.data) return
   emit('click', node)
 }
 </script>