Integrated tab bar UI elements (#7853)

## Summary

The current help / feedback is often overlooked by users, this adds a
setting that makes it more visible moving it up into the tab bar and
moves the user login/profile button out of the "action bar" into the tab
bar.

## Changes
- Add 'Comfy.UI.TabBarLayout' setting with Default/Integrated options
- Move Help & User controls to tab bar when Integrated mode is enabled
- Extract help center logic into shared useHelpCenter composable

## Screenshots (if applicable)

<img width="515" height="540" alt="image"
src="https://github.com/user-attachments/assets/c9e6057f-4fb1-4da6-b25d-9df4b19be31a"
/>
<img width="835" height="268" alt="image"
src="https://github.com/user-attachments/assets/24afc0e8-97eb-45cf-af86-15a9b464e9a8"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7853-Integrated-tab-bar-UI-elements-2df6d73d365081b1beb8f7c641c2fa43)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

src/components/sidebar/SidebarHelpCenterIcon.vue

@@ -1,204 +1,28 @@
 <template>
-  <div>
-    <SidebarIcon
-      icon="pi pi-question-circle"
-      class="comfy-help-center-btn"
-      :label="$t('menu.help')"
-      :tooltip="$t('sideToolbar.helpCenter')"
-      :icon-badge="shouldShowRedDot ? '•' : ''"
-      :is-small="isSmall"
-      @click="toggleHelpCenter"
-    />
-
-    <!-- Help Center Popup positioned within canvas area -->
-    <Teleport to="#graph-canvas-container">
-      <div
-        v-if="isHelpCenterVisible"
-        class="help-center-popup"
-        :class="{
-          'sidebar-left': sidebarLocation === 'left',
-          'sidebar-right': sidebarLocation === 'right',
-          'small-sidebar': isSmall
-        }"
-      >
-        <HelpCenterMenuContent @close="closeHelpCenter" />
-      </div>
-    </Teleport>
-
-    <!-- Release Notification Toast positioned within canvas area -->
-    <Teleport to="#graph-canvas-container">
-      <ReleaseNotificationToast
-        :class="{
-          'sidebar-left': sidebarLocation === 'left',
-          'sidebar-right': sidebarLocation === 'right',
-          'small-sidebar': isSmall
-        }"
-      />
-    </Teleport>
-
-    <!-- WhatsNew Popup positioned within canvas area -->
-    <Teleport to="#graph-canvas-container">
-      <WhatsNewPopup
-        :class="{
-          'sidebar-left': sidebarLocation === 'left',
-          'sidebar-right': sidebarLocation === 'right',
-          'small-sidebar': isSmall
-        }"
-        @whats-new-dismissed="handleWhatsNewDismissed"
-      />
-    </Teleport>
-
-    <!-- Backdrop to close popup when clicking outside -->
-    <Teleport to="body">
-      <div
-        v-if="isHelpCenterVisible"
-        class="help-center-backdrop"
-        @click="closeHelpCenter"
-      />
-    </Teleport>
-  </div>
+  <SidebarIcon
+    icon="pi pi-question-circle"
+    class="comfy-help-center-btn"
+    :label="$t('menu.help')"
+    :tooltip="$t('sideToolbar.helpCenter')"
+    :icon-badge="shouldShowRedDot ? '•' : ''"
+    :is-small="isSmall"
+    @click="toggleHelpCenter"
+  />
 </template>
 
 <script setup lang="ts">
-import { storeToRefs } from 'pinia'
-import { computed, onMounted, toRefs } from 'vue'
-
-import HelpCenterMenuContent from '@/components/helpcenter/HelpCenterMenuContent.vue'
-import { useSettingStore } from '@/platform/settings/settingStore'
-import { useTelemetry } from '@/platform/telemetry'
-import { useReleaseStore } from '@/platform/updates/common/releaseStore'
-import ReleaseNotificationToast from '@/platform/updates/components/ReleaseNotificationToast.vue'
-import WhatsNewPopup from '@/platform/updates/components/WhatsNewPopup.vue'
-import { useDialogService } from '@/services/dialogService'
-import { useHelpCenterStore } from '@/stores/helpCenterStore'
-import { useConflictAcknowledgment } from '@/workbench/extensions/manager/composables/useConflictAcknowledgment'
-import { useConflictDetection } from '@/workbench/extensions/manager/composables/useConflictDetection'
+import { useHelpCenter } from '@/composables/useHelpCenter'
 
 import SidebarIcon from './SidebarIcon.vue'
 
-const settingStore = useSettingStore()
-const releaseStore = useReleaseStore()
-const helpCenterStore = useHelpCenterStore()
-const { isVisible: isHelpCenterVisible } = storeToRefs(helpCenterStore)
-const { shouldShowRedDot: showReleaseRedDot } = storeToRefs(releaseStore)
-
-const conflictDetection = useConflictDetection()
-
-const { showNodeConflictDialog } = useDialogService()
-
-// Use conflict acknowledgment state from composable - call only once
-const { shouldShowRedDot: shouldShowConflictRedDot, markConflictsAsSeen } =
-  useConflictAcknowledgment()
-
-const props = defineProps<{
+defineProps<{
   isSmall: boolean
 }>()
-const { isSmall } = toRefs(props)
 
-// Use either release red dot or conflict red dot
-const shouldShowRedDot = computed((): boolean => {
-  const releaseRedDot = showReleaseRedDot.value
-  return releaseRedDot || shouldShowConflictRedDot.value
-})
-
-const sidebarLocation = computed(() =>
-  settingStore.get('Comfy.Sidebar.Location')
-)
-
-/**
- * Toggle Help Center and track UI button click.
- */
-const toggleHelpCenter = () => {
-  useTelemetry()?.trackUiButtonClicked({
-    button_id: 'sidebar_help_center_toggled'
-  })
-  helpCenterStore.toggle()
-}
-
-const closeHelpCenter = () => {
-  helpCenterStore.hide()
-}
-
-/**
- * Handle What's New popup dismissal
- * Check if conflict modal should be shown after ComfyUI update
- */
-const handleWhatsNewDismissed = async () => {
-  try {
-    // Check if conflict modal should be shown after update
-    const shouldShow =
-      await conflictDetection.shouldShowConflictModalAfterUpdate()
-    if (shouldShow) {
-      showConflictModal()
-    }
-  } catch (error) {
-    console.error('[HelpCenter] Error checking conflict modal:', error)
-  }
-}
-/**
- * Show the node conflict dialog with current conflict data
- */
-const showConflictModal = () => {
-  showNodeConflictDialog({
-    showAfterWhatsNew: true,
-    dialogComponentProps: {
-      onClose: () => {
-        markConflictsAsSeen()
-      }
-    }
-  })
-}
-
-// Initialize release store on mount
-onMounted(async () => {
-  // Initialize release store to fetch releases for toast and popup
-  await releaseStore.initialize()
-})
+const { shouldShowRedDot, toggleHelpCenter } = useHelpCenter()
 </script>
 
 <style scoped>
-.help-center-backdrop {
-  position: absolute;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  z-index: 9999;
-  background: transparent;
-}
-
-.help-center-popup {
-  position: absolute;
-  bottom: 1rem;
-  z-index: 10000;
-  animation: slideInUp 0.2s ease-out;
-  pointer-events: auto;
-}
-
-.help-center-popup.sidebar-left {
-  left: 1rem;
-}
-
-.help-center-popup.sidebar-left.small-sidebar {
-  left: 1rem;
-}
-
-.help-center-popup.sidebar-right {
-  right: 1rem;
-}
-
-@keyframes slideInUp {
-  from {
-    opacity: 0;
-    transform: translateY(20px);
-  }
-
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
 :deep(.p-badge) {
   background: #ff3b30;
   color: #ff3b30;