Floating Menus - UI rework (#5980)

## Summary

Enhancing and further modernizing the UI, giving users more usable area
whilst keeping farmiliar positioning and feel of elements.

## Changes

- **What**: Significant restructure of the UI elements, changing
elements from large blocks to floating elements, updating:
- Side toolbar menu (floating style, supports small/normal mode,
combines to scroll on height overflow)
- Bottom tabs panel (floating style, tabs redesigned)
- Action bar (support for docking/undocking menu)
    - Added login/user menu button to top right
- Restyled breadcrumbs (still collapse when overflows)
- Add litegraph support for fps info position (so it isn't covered by
the sidebar)

- **Breaking**: 
- Removed various elements and added new ones, I have tested custom
sidebars, custom actions, etc but if scripts are inserting elements into
"other" elements they may have been (re)moved.
- Remove support for bottom menu
- Remove support for 2nd-row tabs

## Screenshots 
<img width="1116" height="907" alt="ui"
src="https://github.com/user-attachments/assets/b040a215-67d3-4c88-8c4d-f402a16a34f6"
/>


https://github.com/user-attachments/assets/571dbda5-01ec-47e8-b235-ee1b88c93dd0

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5980-Floating-Menus-UI-rework-2866d73d3650810aac60cc1afe979b60)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: github-actions <github-actions@github.com>

src/components/graph/GraphCanvas.vue

@@ -2,28 +2,46 @@
   <!-- Load splitter overlay only after comfyApp is ready. -->
   <!-- If load immediately, the top-level splitter stateKey won't be correctly
   synced with the stateStorage (localStorage). -->
-  <LiteGraphCanvasSplitterOverlay v-if="comfyAppReady && betaMenuEnabled">
-    <template v-if="!workspaceStore.focusMode" #side-bar-panel>
+  <LiteGraphCanvasSplitterOverlay v-if="comfyAppReady">
+    <template v-if="showUI && workflowTabsPosition === 'Topbar'" #workflow-tabs>
+      <div
+        class="workflow-tabs-container pointer-events-auto relative h-9.5 w-full"
+      >
+        <!-- Native drag area for Electron -->
+        <div
+          v-if="isNativeWindow() && workflowTabsPosition !== 'Topbar'"
+          class="app-drag fixed top-0 left-0 z-10 h-[var(--comfy-topbar-height)] w-full"
+        />
+        <div class="flex">
+          <WorkflowTabs />
+          <TopbarBadges />
+        </div>
+      </div>
+    </template>
+    <template v-if="showUI" #side-toolbar>
       <SideToolbar />
     </template>
-    <template v-if="!workspaceStore.focusMode" #bottom-panel>
+    <template v-if="showUI" #side-bar-panel>
+      <div
+        class="sidebar-content-container h-full w-full overflow-x-hidden overflow-y-auto"
+      >
+        <ExtensionSlot v-if="activeSidebarTab" :extension="activeSidebarTab" />
+      </div>
+    </template>
+    <template v-if="showUI" #topmenu>
+      <TopMenuSection />
+    </template>
+    <template v-if="showUI" #bottom-panel>
       <BottomPanel />
     </template>
     <template #graph-canvas-panel>
-      <div class="pointer-events-auto absolute top-0 left-0 w-auto max-w-full">
-        <SecondRowWorkflowTabs
-          v-if="workflowTabsPosition === 'Topbar (2nd-row)'"
-        />
-      </div>
       <GraphCanvasMenu v-if="canvasMenuEnabled" class="pointer-events-auto" />
-
       <MiniMap
-        v-if="comfyAppReady && minimapEnabled"
+        v-if="comfyAppReady && minimapEnabled && showUI"
         class="pointer-events-auto"
       />
     </template>
   </LiteGraphCanvasSplitterOverlay>
-  <GraphCanvasMenu v-if="!betaMenuEnabled && canvasMenuEnabled" />
   <canvas
     id="graph-canvas"
     ref="canvasRef"
@@ -81,7 +99,9 @@ import {
 } from 'vue'
 
 import LiteGraphCanvasSplitterOverlay from '@/components/LiteGraphCanvasSplitterOverlay.vue'
+import TopMenuSection from '@/components/TopMenuSection.vue'
 import BottomPanel from '@/components/bottomPanel/BottomPanel.vue'
+import ExtensionSlot from '@/components/common/ExtensionSlot.vue'
 import DomWidgets from '@/components/graph/DomWidgets.vue'
 import GraphCanvasMenu from '@/components/graph/GraphCanvasMenu.vue'
 import NodeTooltip from '@/components/graph/NodeTooltip.vue'
@@ -90,7 +110,8 @@ import TitleEditor from '@/components/graph/TitleEditor.vue'
 import NodeOptions from '@/components/graph/selectionToolbox/NodeOptions.vue'
 import NodeSearchboxPopover from '@/components/searchbox/NodeSearchBoxPopover.vue'
 import SideToolbar from '@/components/sidebar/SideToolbar.vue'
-import SecondRowWorkflowTabs from '@/components/topbar/SecondRowWorkflowTabs.vue'
+import TopbarBadges from '@/components/topbar/TopbarBadges.vue'
+import WorkflowTabs from '@/components/topbar/WorkflowTabs.vue'
 import { useChainCallback } from '@/composables/functional/useChainCallback'
 import type { VueNodeData } from '@/composables/graph/useGraphNodeManager'
 import { useViewportCulling } from '@/composables/graph/useViewportCulling'
@@ -129,6 +150,7 @@ import { useNodeDefStore } from '@/stores/nodeDefStore'
 import { useColorPaletteStore } from '@/stores/workspace/colorPaletteStore'
 import { useSearchBoxStore } from '@/stores/workspace/searchBoxStore'
 import { useWorkspaceStore } from '@/stores/workspaceStore'
+import { isNativeWindow } from '@/utils/envUtil'
 
 const emit = defineEmits<{
   ready: []
@@ -160,6 +182,12 @@ const tooltipEnabled = computed(() => settingStore.get('Comfy.EnableTooltips'))
 const selectionToolboxEnabled = computed(() =>
   settingStore.get('Comfy.Canvas.SelectionToolbox')
 )
+const activeSidebarTab = computed(() => {
+  return workspaceStore.sidebarTab.activeSidebarTab
+})
+const showUI = computed(
+  () => !workspaceStore.focusMode && betaMenuEnabled.value
+)
 
 const minimapEnabled = computed(() => settingStore.get('Comfy.Minimap.Visible'))