another demo

When a node has a missing input connection, the slot is highlighted with
a red outline. This PR makes the error indicator round like the slot
instead of an oval.

| Before | After |
| ------ | ----- |
| <img width="360" alt="before"
src="https://github.com/user-attachments/assets/2d5ebc93-fa74-492d-92a7-3a1b3af4754f"
/> | <img width="360" alt="after"
src="https://github.com/user-attachments/assets/57c15503-d94a-48d7-8c35-7760f1b860e6"
/>|

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8123-Fix-roundness-of-slot-error-indicator-in-vue-2eb6d73d3650810383a2f5532117c29f)
by [Unito](https://www.unito.io)

README.md

@@ -539,4 +539,4 @@ For comprehensive troubleshooting and technical support, please refer to our off
 
 - **[General Troubleshooting Guide](https://docs.comfy.org/troubleshooting/overview)** - Common issues, performance optimization, and reporting bugs
 - **[Custom Node Issues](https://docs.comfy.org/troubleshooting/custom-node-issues)** - Debugging custom node problems and conflicts
-- **[Desktop Installation Guide](https://docs.comfy.org/installation/desktop/windows)** - Desktop-specific installation and troubleshooting
+- **[Desktop Installation Guide](https://docs.comfy.org/installation/desktop/windows)** - Desktop-specific installation and troubleshooting

src/components/sidebar/tabs/NodeLibrarySidebarTab.vue

@@ -139,7 +139,15 @@ import { storeToRefs } from 'pinia'
 import Divider from 'primevue/divider'
 import Popover from 'primevue/popover'
 import type { Ref } from 'vue'
-import { computed, h, nextTick, onMounted, ref, render } from 'vue'
+import {
+  computed,
+  getCurrentInstance,
+  h,
+  nextTick,
+  onMounted,
+  ref,
+  render
+} from 'vue'
 
 import SearchBox from '@/components/common/SearchBox.vue'
 import type { SearchFilter } from '@/components/common/SearchFilterChip.vue'
@@ -171,6 +179,8 @@ import type { FuseFilterWithValue } from '@/utils/fuseUtil'
 
 import NodeBookmarkTreeExplorer from './nodeLibrary/NodeBookmarkTreeExplorer.vue'
 
+const instance = getCurrentInstance()!
+const appContext = instance.appContext
 const nodeDefStore = useNodeDefStore()
 const nodeBookmarkStore = useNodeBookmarkStore()
 const nodeHelpStore = useNodeHelpStore()
@@ -272,6 +282,7 @@ const renderedRoot = computed<TreeExplorerNode<ComfyNodeDefImpl>>(() => {
       draggable: node.leaf,
       renderDragPreview(container) {
         const vnode = h(NodePreview, { nodeDef: node.data })
+        vnode.appContext = appContext
         render(vnode, container)
         return () => {
           render(null, container)

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

@@ -22,7 +22,15 @@
 </template>
 
 <script setup lang="ts">
-import { computed, h, nextTick, ref, render, watch } from 'vue'
+import {
+  computed,
+  getCurrentInstance,
+  h,
+  nextTick,
+  ref,
+  render,
+  watch
+} from 'vue'
 import { useI18n } from 'vue-i18n'
 
 import FolderCustomizationDialog from '@/components/common/CustomizationDialog.vue'
@@ -41,6 +49,8 @@ import type {
   TreeNode
 } from '@/types/treeExplorerTypes'
 
+const instance = getCurrentInstance()!
+const appContext = instance.appContext
 const props = defineProps<{
   filteredNodeDefs: ComfyNodeDefImpl[]
   openNodeHelp: (nodeDef: ComfyNodeDefImpl) => void
@@ -154,6 +164,7 @@ const renderedBookmarkedRoot = computed<TreeExplorerNode<ComfyNodeDefImpl>>(
         },
         renderDragPreview(container) {
           const vnode = h(NodePreview, { nodeDef: node.data })
+          vnode.appContext = appContext
           render(vnode, container)
           return () => {
             render(null, container)

src/renderer/extensions/vueNodes/components/InputSlot.vue

@@ -23,7 +23,8 @@
       :class="
         cn(
           '-translate-x-1/2 w-3',
-          hasSlotError && 'ring-2 ring-error ring-offset-0 rounded-full'
+          hasSlotError &&
+            'before:ring-2 before:ring-error before:ring-offset-0 before:size-4 before:absolute before:rounded-full before:pointer-events-none'
         )
       "
       :slot-data

src/scripts/app.ts

@@ -1433,7 +1433,7 @@ export class ComfyApp {
   async handleFile(file: File, openSource?: WorkflowOpenSource) {
     const fileName = file.name.replace(/\.\w+$/, '') // Strip file extension
     const workflowData = await getWorkflowDataFromFile(file)
-    if (!workflowData) {
+    if (_.isEmpty(workflowData)) {
       if (file.type.startsWith('image')) {
         const transfer = new DataTransfer()
         transfer.items.add(file)