feat: add visual indicator for list output slots (#8766)

## Summary

Add rounded square dot shape and "(Iterative)" tooltip for list-type
output slots in Vue nodes, matching litegraph's visual indicator.

## Changes

- **What**: `SlotConnectionDot.vue` renders `rounded-[1px]` instead of
`rounded-full` when slot shape is `RenderShape.GRID`. `OutputSlot.vue`
appends "(Iterative)" to the tooltip for these slots.

<img width="807" height="542" alt="Screenshot 2026-02-10 at 03 38 42"
src="https://github.com/user-attachments/assets/137b60c5-ac3b-457f-a52d-58f5f28a59ea"
/>


## Review Focus
- i18n key added for the iterative suffix

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8766-feat-add-visual-indicator-for-list-output-slots-3036d73d3650813aad85ce094d29c42b)
by [Unito](https://www.unito.io)

src/locales/en/main.json

@@ -2834,6 +2834,9 @@
       }
     }
   },
+  "vueNodesSlot": {
+    "iterative": "(Iterative)"
+  },
   "vueNodesBanner": {
     "title": "Introducing Nodes 2.0",
     "desc": "– More flexible workflows, powerful new widgets, built for extensibility",

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

@@ -23,9 +23,11 @@
 <script setup lang="ts">
 import { computed, onErrorCaptured, ref, watchEffect } from 'vue'
 import type { ComponentPublicInstance } from 'vue'
+import { useI18n } from 'vue-i18n'
 
 import { useErrorHandling } from '@/composables/useErrorHandling'
 import type { INodeSlot } from '@/lib/litegraph/src/litegraph'
+import { RenderShape } from '@/lib/litegraph/src/types/globalEnums'
 import { useSlotLinkDragUIState } from '@/renderer/core/canvas/links/slotLinkDragUIState'
 import { getSlotKey } from '@/renderer/core/layout/slots/slotIdentifier'
 import { useNodeTooltips } from '@/renderer/extensions/vueNodes/composables/useNodeTooltips'
@@ -47,6 +49,8 @@ interface OutputSlotProps {
 
 const props = defineProps<OutputSlotProps>()
 
+const { t } = useI18n()
+
 const hasNoLabel = computed(
   () => !props.slotData.localized_name && props.slotData.name === ''
 )
@@ -65,7 +69,11 @@ const tooltipConfig = computed(() => {
   const slotName = props.slotData.name || ''
   const tooltipText = getOutputSlotTooltip(props.index)
   const fallbackText = tooltipText || `Output: ${slotName}`
-  return createTooltipConfig(fallbackText)
+  const iterativeSuffix =
+    props.slotData.shape === RenderShape.GRID
+      ? ` ${t('vueNodesSlot.iterative')}`
+      : ''
+  return createTooltipConfig(fallbackText + iterativeSuffix)
 })
 
 onErrorCaptured((error) => {

src/renderer/extensions/vueNodes/components/SlotConnectionDot.test.ts

@@ -0,0 +1,41 @@
+import { mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+
+import type { INodeSlot } from '@/lib/litegraph/src/litegraph'
+import { RenderShape } from '@/lib/litegraph/src/types/globalEnums'
+
+import SlotConnectionDot from './SlotConnectionDot.vue'
+
+const defaultSlot: INodeSlot = {
+  name: 'output',
+  type: 'IMAGE',
+  boundingRect: [0, 0, 0, 0]
+}
+
+function mountDot(slotData?: INodeSlot) {
+  return mount(SlotConnectionDot, {
+    props: { slotData }
+  })
+}
+
+describe('SlotConnectionDot', () => {
+  it('renders circle shape by default', () => {
+    const wrapper = mountDot(defaultSlot)
+
+    const dot = wrapper.find('.slot-dot')
+    expect(dot.classes()).toContain('rounded-full')
+    expect(dot.element.tagName).toBe('DIV')
+  })
+
+  it('renders rounded square for GRID shape', () => {
+    const wrapper = mountDot({
+      ...defaultSlot,
+      shape: RenderShape.GRID
+    })
+
+    const dot = wrapper.find('.slot-dot')
+    expect(dot.classes()).toContain('rounded-[1px]')
+    expect(dot.classes()).not.toContain('rounded-full')
+    expect(dot.element.tagName).toBe('DIV')
+  })
+})

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

@@ -3,6 +3,7 @@ import { computed, useTemplateRef } from 'vue'
 
 import { getSlotColor } from '@/constants/slotColors'
 import type { INodeSlot } from '@/lib/litegraph/src/litegraph'
+import { RenderShape } from '@/lib/litegraph/src/types/globalEnums'
 import { cn } from '@/utils/tailwindUtil'
 import type { ClassValue } from '@/utils/tailwindUtil'
 
@@ -41,9 +42,12 @@ defineExpose({
   slotElRef
 })
 
+const isListShape = computed(() => props.slotData?.shape === RenderShape.GRID)
+
 const slotClass = computed(() =>
   cn(
-    'bg-slate-300 rounded-full slot-dot',
+    'bg-slate-300 slot-dot',
+    isListShape.value ? 'rounded-[1px]' : 'rounded-full',
     'transition-all duration-150',
     'border border-solid border-node-component-slot-dot-outline',
     props.multi
@@ -63,7 +67,7 @@ const slotClass = computed(() =>
     "
   >
     <div
-      v-if="types.length === 1 && slotData?.shape == undefined"
+      v-if="types.length === 1 && (slotData?.shape == undefined || isListShape)"
       ref="slot-el"
       :style="{ backgroundColor: types.length === 1 ? types[0] : undefined }"
       :class="slotClass"