feat: detect and resolve missing media inputs in error tab (#10309)

## Summary

Add detection and resolution UI for missing image/video/audio inputs
(LoadImage, LoadVideo, LoadAudio nodes) in the Errors tab, mirroring the
existing missing model pipeline.

## Changes

- **What**: New `src/platform/missingMedia/` module — scan pipeline
detects missing media files on workflow load (sync for OSS, async for
cloud), surfaces them in the error tab with upload dropzone, thumbnail
library select, and 2-step confirm flow
- **Detection**: `scanAllMediaCandidates()` checks combo widget values
against options; cloud path defers to `verifyCloudMediaCandidates()` via
`assetsStore.updateInputs()`
- **UI**: `MissingMediaCard` groups by media type; `MissingMediaRow`
shows node name (single) or filename+count (multiple), upload dropzone
with drag & drop, `MissingMediaLibrarySelect` with image/video
thumbnails
- **Resolution**: Upload via `/upload/image` API or select from library
→ status card → checkmark confirm → widget value applied, item removed
from error list
- **Integration**: `executionErrorStore` aggregates into
`hasAnyError`/`totalErrorCount`; `useNodeErrorFlagSync` flags nodes on
canvas; `useErrorGroups` renders in error tab
- **Shared**: Extract `ACCEPTED_IMAGE_TYPES`/`ACCEPTED_VIDEO_TYPES` to
`src/utils/mediaUploadUtil.ts`; extract `resolveComboValues` to
`src/utils/litegraphUtil.ts` (shared across missingMedia + missingModel
scan)
- **Reverse clearing**: Widget value changes on nodes auto-remove
corresponding missing media errors (via `clearWidgetRelatedErrors`)

## Testing

### Unit tests (22 tests)
- `missingMediaScan.test.ts` (12): groupCandidatesByName,
groupCandidatesByMediaType (ordering, multi-name),
verifyCloudMediaCandidates (missing/present, abort before/after
updateInputs, already resolved true/false, no-pending skip, updateInputs
spy)
- `missingMediaStore.test.ts` (10): setMissingMedia, clearMissingMedia
(full lifecycle with interaction state), missingMediaNodeIds,
hasMissingMediaOnNode, removeMissingMediaByWidget
(match/no-match/last-entry), createVerificationAbortController

### E2E tests (10 scenarios in `missingMedia.spec.ts`)
- Detection: error overlay shown, Missing Inputs group in errors tab,
correct row count, dropzone + library select visibility, no false
positive for valid media
- Upload flow: file picker → uploading status card → confirm → row
removed
- Library select: dropdown → selected status card → confirm → row
removed
- Cancel: pending selection → returns to upload/library UI
- All resolved: Missing Inputs group disappears
- Locate node: canvas pans to missing media node

## Review Focus

- Cloud verification path: `verifyCloudMediaCandidates` compares widget
value against `asset_hash` — implicit contract
- 2-step confirm mirrors missing model pattern (`pendingSelection` →
confirm/cancel)
- Event propagation guard on dropzone (`@drop.prevent.stop`) to prevent
canvas LoadImage node creation
- `clearAllErrors()` intentionally does NOT clear missing media (same as
missing models — preserves pending repairs)
- `runMissingMediaPipeline` is now `async` and `await`-ed, matching
model pipeline

## Test plan

- [x] OSS: load workflow with LoadImage referencing non-existent file →
error tab shows it
- [x] Upload file via dropzone → status card shows "Uploaded" → confirm
→ widget updated, error removed
- [x] Select from library with thumbnail preview → confirm → widget
updated, error removed
- [x] Cancel pending selection → returns to upload/library UI
- [x] Load workflow with valid images → no false positives
- [x] Click locate-node → canvas navigates to the node
- [x] Multiple nodes referencing different missing files → correct row
count
- [x] Widget value change on node → missing media error auto-removed

## Screenshots


https://github.com/user-attachments/assets/631c0cb0-9706-4db2-8615-f24a4c3fe27d

browser_tests/assets/missing/missing_media_multiple.json

@@ -0,0 +1,68 @@
+{
+  "last_node_id": 12,
+  "last_link_id": 0,
+  "nodes": [
+    {
+      "id": 10,
+      "type": "LoadImage",
+      "pos": [50, 50],
+      "size": [315, 314],
+      "flags": {},
+      "order": 0,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [
+        {
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": null
+        },
+        {
+          "name": "MASK",
+          "type": "MASK",
+          "links": null
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": ["nonexistent_test_image_aaa.png", "image"]
+    },
+    {
+      "id": 11,
+      "type": "LoadImage",
+      "pos": [450, 50],
+      "size": [315, 314],
+      "flags": {},
+      "order": 1,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [
+        {
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": null
+        },
+        {
+          "name": "MASK",
+          "type": "MASK",
+          "links": null
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": ["nonexistent_test_image_bbb.png", "image"]
+    }
+  ],
+  "links": [],
+  "groups": [],
+  "config": {},
+  "extra": {
+    "ds": {
+      "offset": [0, 0],
+      "scale": 1
+    }
+  },
+  "version": 0.4
+}

browser_tests/assets/missing/missing_media_single.json

@@ -0,0 +1,42 @@
+{
+  "last_node_id": 10,
+  "last_link_id": 0,
+  "nodes": [
+    {
+      "id": 10,
+      "type": "LoadImage",
+      "pos": [50, 50],
+      "size": [315, 314],
+      "flags": {},
+      "order": 0,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [
+        {
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": null
+        },
+        {
+          "name": "MASK",
+          "type": "MASK",
+          "links": null
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": ["nonexistent_test_image_12345.png", "image"]
+    }
+  ],
+  "links": [],
+  "groups": [],
+  "config": {},
+  "extra": {
+    "ds": {
+      "offset": [0, 0],
+      "scale": 1
+    }
+  },
+  "version": 0.4
+}

browser_tests/fixtures/selectors.ts

@@ -44,7 +44,15 @@ export const TestIds = {
     about: 'about-panel',
     whatsNewSection: 'whats-new-section',
     missingNodePacksGroup: 'error-group-missing-node',
-    missingModelsGroup: 'error-group-missing-model'
+    missingModelsGroup: 'error-group-missing-model',
+    missingMediaGroup: 'error-group-missing-media',
+    missingMediaRow: 'missing-media-row',
+    missingMediaUploadDropzone: 'missing-media-upload-dropzone',
+    missingMediaLibrarySelect: 'missing-media-library-select',
+    missingMediaStatusCard: 'missing-media-status-card',
+    missingMediaConfirmButton: 'missing-media-confirm-button',
+    missingMediaCancelButton: 'missing-media-cancel-button',
+    missingMediaLocateButton: 'missing-media-locate-button'
   },
   keybindings: {
     presetMenu: 'keybinding-preset-menu'
@@ -61,6 +69,16 @@ export const TestIds = {
   propertiesPanel: {
     root: 'properties-panel'
   },
+  subgraphEditor: {
+    toggle: 'subgraph-editor-toggle',
+    shownSection: 'subgraph-editor-shown-section',
+    hiddenSection: 'subgraph-editor-hidden-section',
+    widgetToggle: 'subgraph-widget-toggle',
+    widgetLabel: 'subgraph-widget-label',
+    iconLink: 'icon-link',
+    iconEye: 'icon-eye',
+    widgetActionsMenuButton: 'widget-actions-menu-button'
+  },
   node: {
     titleInput: 'node-title-input'
   },
@@ -70,6 +88,9 @@ export const TestIds = {
     colorBlue: 'blue',
     colorRed: 'red'
   },
+  menu: {
+    moreMenuContent: 'more-menu-content'
+  },
   widgets: {
     container: 'node-widgets',
     widget: 'node-widget',
@@ -131,5 +152,7 @@ export type TestIdValue =
       (id: string) => string
     >
   | (typeof TestIds.user)[keyof typeof TestIds.user]
+  | (typeof TestIds.menu)[keyof typeof TestIds.menu]
+  | (typeof TestIds.subgraphEditor)[keyof typeof TestIds.subgraphEditor]
   | (typeof TestIds.queue)[keyof typeof TestIds.queue]
   | (typeof TestIds.errors)[keyof typeof TestIds.errors]

browser_tests/tests/missingMedia.spec.ts

@@ -0,0 +1,225 @@
+import { expect } from '@playwright/test'
+
+import type { ComfyPage } from '../fixtures/ComfyPage'
+import { comfyPageFixture as test } from '../fixtures/ComfyPage'
+import { TestIds } from '../fixtures/selectors'
+
+async function loadMissingMediaAndOpenErrorsTab(
+  comfyPage: ComfyPage,
+  workflow = 'missing/missing_media_single'
+) {
+  await comfyPage.workflow.loadWorkflow(workflow)
+
+  const errorOverlay = comfyPage.page.getByTestId(TestIds.dialogs.errorOverlay)
+  await expect(errorOverlay).toBeVisible()
+
+  await errorOverlay.getByTestId(TestIds.dialogs.errorOverlaySeeErrors).click()
+  await expect(errorOverlay).not.toBeVisible()
+}
+
+async function uploadFileViaDropzone(comfyPage: ComfyPage) {
+  const dropzone = comfyPage.page.getByTestId(
+    TestIds.dialogs.missingMediaUploadDropzone
+  )
+  const [fileChooser] = await Promise.all([
+    comfyPage.page.waitForEvent('filechooser'),
+    dropzone.click()
+  ])
+  await fileChooser.setFiles(comfyPage.assetPath('test_upload_image.png'))
+}
+
+async function confirmPendingSelection(comfyPage: ComfyPage) {
+  const confirmButton = comfyPage.page.getByTestId(
+    TestIds.dialogs.missingMediaConfirmButton
+  )
+  await expect(confirmButton).toBeEnabled()
+  await confirmButton.click()
+}
+
+function getMediaRow(comfyPage: ComfyPage) {
+  return comfyPage.page.getByTestId(TestIds.dialogs.missingMediaRow)
+}
+
+function getStatusCard(comfyPage: ComfyPage) {
+  return comfyPage.page.getByTestId(TestIds.dialogs.missingMediaStatusCard)
+}
+
+function getDropzone(comfyPage: ComfyPage) {
+  return comfyPage.page.getByTestId(TestIds.dialogs.missingMediaUploadDropzone)
+}
+
+test.describe('Missing media inputs in Error Tab', () => {
+  test.beforeEach(async ({ comfyPage }) => {
+    await comfyPage.settings.setSetting('Comfy.UseNewMenu', 'Top')
+    await comfyPage.settings.setSetting(
+      'Comfy.RightSidePanel.ShowErrorsTab',
+      true
+    )
+  })
+
+  test.describe('Detection', () => {
+    test('Shows error overlay when workflow has missing media inputs', async ({
+      comfyPage
+    }) => {
+      await comfyPage.workflow.loadWorkflow('missing/missing_media_single')
+
+      const errorOverlay = comfyPage.page.getByTestId(
+        TestIds.dialogs.errorOverlay
+      )
+      await expect(errorOverlay).toBeVisible()
+
+      const messages = errorOverlay.getByTestId(
+        TestIds.dialogs.errorOverlayMessages
+      )
+      await expect(messages).toBeVisible()
+      await expect(messages).toHaveText(/missing required inputs/i)
+    })
+
+    test('Shows missing media group in errors tab after clicking See Errors', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+
+      await expect(
+        comfyPage.page.getByTestId(TestIds.dialogs.missingMediaGroup)
+      ).toBeVisible()
+    })
+
+    test('Shows correct number of missing media rows', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(
+        comfyPage,
+        'missing/missing_media_multiple'
+      )
+
+      await expect(getMediaRow(comfyPage)).toHaveCount(2)
+    })
+
+    test('Shows upload dropzone and library select for each missing item', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+
+      await expect(getDropzone(comfyPage)).toBeVisible()
+      await expect(
+        comfyPage.page.getByTestId(TestIds.dialogs.missingMediaLibrarySelect)
+      ).toBeVisible()
+    })
+
+    test('Does not show error overlay when all media inputs exist', async ({
+      comfyPage
+    }) => {
+      await comfyPage.workflow.loadWorkflow('widgets/load_image_widget')
+
+      await expect(
+        comfyPage.page.getByTestId(TestIds.dialogs.errorOverlay)
+      ).not.toBeVisible()
+    })
+  })
+
+  test.describe('Upload flow (2-step confirm)', () => {
+    test('Upload via file picker shows status card then allows confirm', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+      await uploadFileViaDropzone(comfyPage)
+
+      await expect(getStatusCard(comfyPage)).toBeVisible()
+
+      await confirmPendingSelection(comfyPage)
+      await expect(getMediaRow(comfyPage)).toHaveCount(0)
+    })
+  })
+
+  test.describe('Library select flow (2-step confirm)', () => {
+    test('Selecting from library shows status card then allows confirm', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+
+      const librarySelect = comfyPage.page.getByTestId(
+        TestIds.dialogs.missingMediaLibrarySelect
+      )
+      await librarySelect.getByRole('combobox').click()
+
+      const optionCount = await comfyPage.page.getByRole('option').count()
+      if (optionCount === 0) {
+        test.skip()
+        return
+      }
+
+      await comfyPage.page.getByRole('option').first().click()
+
+      await expect(getStatusCard(comfyPage)).toBeVisible()
+
+      await confirmPendingSelection(comfyPage)
+      await expect(getMediaRow(comfyPage)).toHaveCount(0)
+    })
+  })
+
+  test.describe('Cancel selection', () => {
+    test('Cancelling pending selection returns to upload/library UI', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+      await uploadFileViaDropzone(comfyPage)
+
+      await expect(getStatusCard(comfyPage)).toBeVisible()
+      await expect(getDropzone(comfyPage)).not.toBeVisible()
+
+      await comfyPage.page
+        .getByTestId(TestIds.dialogs.missingMediaCancelButton)
+        .click()
+
+      await expect(getStatusCard(comfyPage)).not.toBeVisible()
+      await expect(getDropzone(comfyPage)).toBeVisible()
+    })
+  })
+
+  test.describe('All resolved', () => {
+    test('Missing Inputs group disappears when all items are resolved', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+      await uploadFileViaDropzone(comfyPage)
+      await confirmPendingSelection(comfyPage)
+
+      await expect(
+        comfyPage.page.getByTestId(TestIds.dialogs.missingMediaGroup)
+      ).not.toBeVisible()
+    })
+  })
+
+  test.describe('Locate node', () => {
+    test('Locate button navigates canvas to the missing media node', async ({
+      comfyPage
+    }) => {
+      await loadMissingMediaAndOpenErrorsTab(comfyPage)
+
+      const offsetBefore = await comfyPage.page.evaluate(() => {
+        const canvas = window['app']?.canvas
+        return canvas?.ds?.offset
+          ? [canvas.ds.offset[0], canvas.ds.offset[1]]
+          : null
+      })
+
+      const locateButton = comfyPage.page.getByTestId(
+        TestIds.dialogs.missingMediaLocateButton
+      )
+      await expect(locateButton).toBeVisible()
+      await locateButton.click()
+
+      await expect
+        .poll(async () => {
+          return await comfyPage.page.evaluate(() => {
+            const canvas = window['app']?.canvas
+            return canvas?.ds?.offset
+              ? [canvas.ds.offset[0], canvas.ds.offset[1]]
+              : null
+          })
+        })
+        .not.toEqual(offsetBefore)
+    })
+  })
+})

browser_tests/tests/subgraphPromotedWidgetPanel.spec.ts

@@ -0,0 +1,148 @@
+import type { Locator } from '@playwright/test'
+import type { ComfyPage } from '../fixtures/ComfyPage'
+import {
+  comfyPageFixture as test,
+  comfyExpect as expect
+} from '../fixtures/ComfyPage'
+import { TestIds } from '../fixtures/selectors'
+
+async function ensurePropertiesPanel(comfyPage: ComfyPage) {
+  const panel = comfyPage.menu.propertiesPanel.root
+  if (!(await panel.isVisible())) {
+    await comfyPage.actionbar.propertiesButton.click()
+  }
+  await expect(panel).toBeVisible()
+  return panel
+}
+
+async function selectSubgraphAndOpenEditor(
+  comfyPage: ComfyPage,
+  nodeTitle: string
+) {
+  const subgraphNodes = await comfyPage.nodeOps.getNodeRefsByTitle(nodeTitle)
+  expect(subgraphNodes.length).toBeGreaterThan(0)
+  await subgraphNodes[0].click('title')
+
+  await ensurePropertiesPanel(comfyPage)
+
+  const editorToggle = comfyPage.page.getByTestId(TestIds.subgraphEditor.toggle)
+  await expect(editorToggle).toBeVisible()
+  await editorToggle.click()
+
+  const shownSection = comfyPage.page.getByTestId(
+    TestIds.subgraphEditor.shownSection
+  )
+  await expect(shownSection).toBeVisible()
+  return shownSection
+}
+
+async function collectWidgetLabels(shownSection: Locator) {
+  const labels = shownSection.getByTestId(TestIds.subgraphEditor.widgetLabel)
+  const texts = await labels.allTextContents()
+  return texts.map((t) => t.trim())
+}
+
+test.describe(
+  'Subgraph promoted widget panel',
+  { tag: ['@node', '@widget'] },
+  () => {
+    test.beforeEach(async ({ comfyPage }) => {
+      await comfyPage.settings.setSetting('Comfy.UseNewMenu', 'Top')
+    })
+
+    test.describe('SubgraphEditor (Settings panel)', () => {
+      test('linked promoted widgets have hide toggle disabled', async ({
+        comfyPage
+      }) => {
+        await comfyPage.workflow.loadWorkflow(
+          'subgraphs/subgraph-nested-promotion'
+        )
+        const shownSection = await selectSubgraphAndOpenEditor(
+          comfyPage,
+          'Sub 0'
+        )
+
+        const toggleButtons = shownSection.getByTestId(
+          TestIds.subgraphEditor.widgetToggle
+        )
+        await expect(toggleButtons.first()).toBeVisible()
+
+        const count = await toggleButtons.count()
+        for (let i = 0; i < count; i++) {
+          await expect(toggleButtons.nth(i)).toBeDisabled()
+        }
+      })
+
+      test('linked promoted widgets show link icon instead of eye icon', async ({
+        comfyPage
+      }) => {
+        await comfyPage.workflow.loadWorkflow(
+          'subgraphs/subgraph-nested-promotion'
+        )
+        const shownSection = await selectSubgraphAndOpenEditor(
+          comfyPage,
+          'Sub 0'
+        )
+
+        const linkIcons = shownSection.getByTestId(
+          TestIds.subgraphEditor.iconLink
+        )
+        await expect(linkIcons.first()).toBeVisible()
+
+        const eyeIcons = shownSection.getByTestId(
+          TestIds.subgraphEditor.iconEye
+        )
+        await expect(eyeIcons).toHaveCount(0)
+      })
+
+      test('widget labels display renamed values instead of raw names', async ({
+        comfyPage
+      }) => {
+        await comfyPage.workflow.loadWorkflow(
+          'subgraphs/test-values-input-subgraph'
+        )
+        const shownSection = await selectSubgraphAndOpenEditor(
+          comfyPage,
+          'Input Test Subgraph'
+        )
+
+        const allTexts = await collectWidgetLabels(shownSection)
+        expect(allTexts.length).toBeGreaterThan(0)
+
+        // The fixture has a widget with name="text" but
+        // label="renamed_from_sidepanel". The panel should show the
+        // renamed label, not the raw widget name.
+        expect(allTexts).toContain('renamed_from_sidepanel')
+        expect(allTexts).not.toContain('text')
+      })
+    })
+
+    test.describe('Parameters tab (WidgetActions menu)', () => {
+      test('linked promoted widget menu should not show Hide/Show input', async ({
+        comfyPage
+      }) => {
+        await comfyPage.workflow.loadWorkflow(
+          'subgraphs/subgraph-nested-promotion'
+        )
+        const subgraphNodes =
+          await comfyPage.nodeOps.getNodeRefsByTitle('Sub 0')
+        expect(subgraphNodes.length).toBeGreaterThan(0)
+        await subgraphNodes[0].click('title')
+
+        const panel = await ensurePropertiesPanel(comfyPage)
+
+        const moreButtons = panel.getByTestId(
+          TestIds.subgraphEditor.widgetActionsMenuButton
+        )
+        await expect(moreButtons.first()).toBeVisible()
+        await moreButtons.first().click()
+
+        const menu = comfyPage.page.getByTestId(TestIds.menu.moreMenuContent)
+        await expect(menu).toBeVisible()
+        await expect(menu.getByText('Hide input')).toHaveCount(0)
+        await expect(menu.getByText('Show input')).toHaveCount(0)
+        await expect(menu.getByText('Rename')).toBeVisible()
+      })
+    })
+  }
+)

src/components/button/MoreButton.vue

@@ -51,7 +51,10 @@
         }
       "
     >
-      <div class="flex min-w-40 flex-col gap-2 p-2">
+      <div
+        class="flex min-w-40 flex-col gap-2 p-2"
+        data-testid="more-menu-content"
+      >
         <slot :close="hide" />
       </div>
     </Popover>

src/components/rightSidePanel/RightSidePanel.vue

@@ -303,6 +303,7 @@ function handleTitleCancel() {
             v-if="isSingleSubgraphNode"
             variant="secondary"
             size="icon"
+            data-testid="subgraph-editor-toggle"
             :class="cn(isEditingSubgraph && 'bg-secondary-background-selected')"
             @click="
               rightSidePanelStore.openPanel(

src/components/rightSidePanel/errors/TabErrors.vue

@@ -15,6 +15,7 @@
     <div
       v-if="singleRuntimeErrorCard"
       data-testid="runtime-error-panel"
+      aria-live="polite"
       class="flex min-h-0 flex-1 flex-col overflow-hidden px-4 py-3"
     >
       <div
@@ -168,7 +169,15 @@
             v-else-if="group.type === 'missing_model'"
             :missing-model-groups="missingModelGroups"
             :show-node-id-badge="showNodeIdBadge"
-            @locate-model="handleLocateModel"
+            @locate-model="handleLocateAssetNode"
+          />
+
+          <!-- Missing Media -->
+          <MissingMediaCard
+            v-else-if="group.type === 'missing_media'"
+            :missing-media-groups="missingMediaGroups"
+            :show-node-id-badge="showNodeIdBadge"
+            @locate-node="handleLocateAssetNode"
           />
         </PropertiesAccordionItem>
       </TransitionGroup>
@@ -225,6 +234,7 @@ import ErrorNodeCard from './ErrorNodeCard.vue'
 import MissingNodeCard from './MissingNodeCard.vue'
 import SwapNodesCard from '@/platform/nodeReplacement/components/SwapNodesCard.vue'
 import MissingModelCard from '@/platform/missingModel/components/MissingModelCard.vue'
+import MissingMediaCard from '@/platform/missingMedia/components/MissingMediaCard.vue'
 import { isCloud } from '@/platform/distribution/types'
 import {
   downloadModel,
@@ -261,7 +271,8 @@ const isSearching = computed(() => searchQuery.value.trim() !== '')
 const fullSizeGroupTypes = new Set([
   'missing_node',
   'swap_nodes',
-  'missing_model'
+  'missing_model',
+  'missing_media'
 ])
 function getGroupSize(group: ErrorGroup) {
   return fullSizeGroupTypes.has(group.type) ? 'lg' : 'default'
@@ -283,6 +294,7 @@ const {
   missingNodeCache,
   missingPackGroups,
   missingModelGroups,
+  missingMediaGroups,
   swapNodeGroups
 } = useErrorGroups(searchQuery, t)
 
@@ -393,7 +405,7 @@ function handleLocateMissingNode(nodeId: string) {
   focusNode(nodeId, missingNodeCache.value)
 }
 
-function handleLocateModel(nodeId: string) {
+function handleLocateAssetNode(nodeId: string) {
   focusNode(nodeId)
 }
 

src/components/rightSidePanel/errors/types.ts

@@ -25,3 +25,4 @@ export type ErrorGroup =
   | { type: 'missing_node'; title: string; priority: number }
   | { type: 'swap_nodes'; title: string; priority: number }
   | { type: 'missing_model'; title: string; priority: number }
+  | { type: 'missing_media'; title: string; priority: number }

src/components/rightSidePanel/errors/useErrorActions.ts

@@ -20,7 +20,7 @@ export function useErrorActions() {
       is_external: true,
       source: 'error_dialog'
     })
-    void commandStore.execute('Comfy.ContactSupport')
+    return commandStore.execute('Comfy.ContactSupport')
   }
 
   function findOnGitHub(errorMessage: string) {

src/components/rightSidePanel/errors/useErrorGroups.ts

@@ -4,6 +4,7 @@ import Fuse from 'fuse.js'
 import type { IFuseOptions } from 'fuse.js'
 
 import { useMissingModelStore } from '@/platform/missingModel/missingModelStore'
+import { useMissingMediaStore } from '@/platform/missingMedia/missingMediaStore'
 import { useExecutionErrorStore } from '@/stores/executionErrorStore'
 import { useMissingNodesErrorStore } from '@/platform/nodeReplacement/missingNodesErrorStore'
 import { useComfyRegistryStore } from '@/stores/comfyRegistryStore'
@@ -29,7 +30,9 @@ import type {
   MissingModelCandidate,
   MissingModelGroup
 } from '@/platform/missingModel/types'
+import type { MissingMediaGroup } from '@/platform/missingMedia/types'
 import { groupCandidatesByName } from '@/platform/missingModel/missingModelScan'
+import { groupCandidatesByMediaType } from '@/platform/missingMedia/missingMediaScan'
 import {
   isNodeExecutionId,
   compareExecutionId
@@ -239,6 +242,7 @@ export function useErrorGroups(
   const executionErrorStore = useExecutionErrorStore()
   const missingNodesStore = useMissingNodesErrorStore()
   const missingModelStore = useMissingModelStore()
+  const missingMediaStore = useMissingMediaStore()
   const canvasStore = useCanvasStore()
   const { inferPackFromNodeName } = useComfyRegistryStore()
   const collapseState = reactive<Record<string, boolean>>({})
@@ -635,6 +639,27 @@ export function useErrorGroups(
     ]
   }
 
+  const missingMediaGroups = computed<MissingMediaGroup[]>(() => {
+    const candidates = missingMediaStore.missingMediaCandidates
+    if (!candidates?.length) return []
+    return groupCandidatesByMediaType(candidates)
+  })
+
+  function buildMissingMediaGroups(): ErrorGroup[] {
+    if (!missingMediaGroups.value.length) return []
+    const totalItems = missingMediaGroups.value.reduce(
+      (count, group) => count + group.items.length,
+      0
+    )
+    return [
+      {
+        type: 'missing_media' as const,
+        title: `${t('rightSidePanel.missingMedia.missingMediaTitle')} (${totalItems})`,
+        priority: 3
+      }
+    ]
+  }
+
   const allErrorGroups = computed<ErrorGroup[]>(() => {
     const groupsMap = new Map<string, GroupEntry>()
 
@@ -645,6 +670,7 @@ export function useErrorGroups(
     return [
       ...buildMissingNodeGroups(),
       ...buildMissingModelGroups(),
+      ...buildMissingMediaGroups(),
       ...toSortedGroups(groupsMap)
     ]
   })
@@ -663,6 +689,7 @@ export function useErrorGroups(
     return [
       ...buildMissingNodeGroups(),
       ...buildMissingModelGroups(),
+      ...buildMissingMediaGroups(),
       ...executionGroups
     ]
   })
@@ -699,6 +726,7 @@ export function useErrorGroups(
     groupedErrorMessages,
     missingPackGroups,
     missingModelGroups,
+    missingMediaGroups,
     swapNodeGroups
   }
 }

src/components/rightSidePanel/errors/useErrorReport.ts

@@ -1,4 +1,4 @@
-import { computed, onMounted, onUnmounted, reactive, toValue } from 'vue'
+import { computed, reactive, toValue, watch } from 'vue'
 
 import type { MaybeRefOrGetter } from 'vue'
 
@@ -28,66 +28,73 @@ export function useErrorReport(cardSource: MaybeRefOrGetter<ErrorCardData>) {
     )
   })
 
-  let cancelled = false
-  onUnmounted(() => {
-    cancelled = true
-  })
+  watch(
+    () => toValue(cardSource),
+    async (card, _, onCleanup) => {
+      let cancelled = false
+      onCleanup(() => {
+        cancelled = true
+      })
 
-  onMounted(async () => {
-    const card = toValue(cardSource)
-    const runtimeErrors = card.errors
-      .map((error, idx) => ({ error, idx }))
-      .filter(({ error }) => error.isRuntimeError)
+      for (const key of Object.keys(enrichedDetails)) {
+        delete enrichedDetails[key as unknown as number]
+      }
 
-    if (runtimeErrors.length === 0) return
+      const runtimeErrors = card.errors
+        .map((error, idx) => ({ error, idx }))
+        .filter(({ error }) => error.isRuntimeError)
 
-    if (!systemStatsStore.systemStats) {
-      if (systemStatsStore.isLoading) {
-        await until(systemStatsStore.isLoading).toBe(false)
-      } else {
-        try {
-          await systemStatsStore.refetchSystemStats()
-        } catch (e) {
-          console.warn('Failed to fetch system stats for error report:', e)
-          return
+      if (runtimeErrors.length === 0) return
+
+      if (!systemStatsStore.systemStats) {
+        if (systemStatsStore.isLoading) {
+          await until(() => systemStatsStore.isLoading).toBe(false)
+        } else {
+          try {
+            await systemStatsStore.refetchSystemStats()
+          } catch (e) {
+            console.warn('Failed to fetch system stats for error report:', e)
+            return
+          }
         }
       }
-    }
-    if (!systemStatsStore.systemStats || cancelled) return
+      if (!systemStatsStore.systemStats || cancelled) return
 
-    const logs = await api
-      .getLogs()
-      .catch(() => 'Failed to retrieve server logs')
-    if (cancelled) return
+      const logs = await api
+        .getLogs()
+        .catch(() => 'Failed to retrieve server logs')
+      if (cancelled) return
 
-    const workflow = (() => {
-      try {
-        return app.rootGraph.serialize()
-      } catch (e) {
-        console.warn('Failed to serialize workflow for error report:', e)
-        return null
+      const workflow = (() => {
+        try {
+          return app.rootGraph.serialize()
+        } catch (e) {
+          console.warn('Failed to serialize workflow for error report:', e)
+          return null
+        }
+      })()
+      if (!workflow) return
+
+      for (const { error, idx } of runtimeErrors) {
+        try {
+          const report = generateErrorReport({
+            exceptionType: error.exceptionType ?? FALLBACK_EXCEPTION_TYPE,
+            exceptionMessage: error.message,
+            traceback: error.details,
+            nodeId: card.nodeId,
+            nodeType: card.title,
+            systemStats: systemStatsStore.systemStats,
+            serverLogs: logs,
+            workflow
+          })
+          enrichedDetails[idx] = report
+        } catch (e) {
+          console.warn('Failed to generate error report:', e)
+        }
       }
-    })()
-    if (!workflow) return
-
-    for (const { error, idx } of runtimeErrors) {
-      try {
-        const report = generateErrorReport({
-          exceptionType: error.exceptionType ?? FALLBACK_EXCEPTION_TYPE,
-          exceptionMessage: error.message,
-          traceback: error.details,
-          nodeId: card.nodeId,
-          nodeType: card.title,
-          systemStats: systemStatsStore.systemStats,
-          serverLogs: logs,
-          workflow
-        })
-        enrichedDetails[idx] = report
-      } catch (e) {
-        console.warn('Failed to generate error report:', e)
-      }
-    }
-  })
+    },
+    { immediate: true }
+  )
 
   return { displayedDetailsMap }
 }

src/components/rightSidePanel/parameters/SectionWidgets.vue

@@ -4,7 +4,6 @@ import { useI18n } from 'vue-i18n'
 
 import Button from '@/components/ui/button/Button.vue'
 import { isPromotedWidgetView } from '@/core/graph/subgraph/promotedWidgetTypes'
-import { getSourceNodeId } from '@/core/graph/subgraph/promotionUtils'
 import type { LGraphGroup, LGraphNode } from '@/lib/litegraph/src/litegraph'
 import { SubgraphNode } from '@/lib/litegraph/src/litegraph'
 import { usePromotionStore } from '@/stores/promotionStore'
@@ -79,7 +78,6 @@ function isWidgetShownOnParents(
 ): boolean {
   return parents.some((parent) => {
     if (isPromotedWidgetView(widget)) {
-      const sourceNodeId = getSourceNodeId(widget)
       const interiorNodeId =
         String(widgetNode.id) === String(parent.id)
           ? widget.sourceNodeId
@@ -88,7 +86,7 @@ function isWidgetShownOnParents(
       return promotionStore.isPromoted(parent.rootGraph.id, parent.id, {
         sourceNodeId: interiorNodeId,
         sourceWidgetName: widget.sourceWidgetName,
-        disambiguatingSourceNodeId: sourceNodeId
+        disambiguatingSourceNodeId: widget.disambiguatingSourceNodeId
       })
     }
     return promotionStore.isPromoted(parent.rootGraph.id, parent.id, {

src/components/rightSidePanel/parameters/TabSubgraphInputs.vue

@@ -14,10 +14,7 @@ import {
 import { useI18n } from 'vue-i18n'
 
 import { isPromotedWidgetView } from '@/core/graph/subgraph/promotedWidgetTypes'
-import {
-  getSourceNodeId,
-  getWidgetName
-} from '@/core/graph/subgraph/promotionUtils'
+import { getWidgetName } from '@/core/graph/subgraph/promotionUtils'
 import type { SubgraphNode } from '@/lib/litegraph/src/subgraph/SubgraphNode'
 import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
 import FormSearchInput from '@/renderer/extensions/vueNodes/widgets/components/form/FormSearchInput.vue'
@@ -132,7 +129,9 @@ const advancedInputsWidgets = computed((): NodeWidgetsList => {
       !promotionStore.isPromoted(node.rootGraph.id, node.id, {
         sourceNodeId: String(interiorNode.id),
         sourceWidgetName: getWidgetName(widget),
-        disambiguatingSourceNodeId: getSourceNodeId(widget)
+        disambiguatingSourceNodeId: isPromotedWidgetView(widget)
+          ? widget.disambiguatingSourceNodeId
+          : undefined
       })
   )
 })

src/components/rightSidePanel/parameters/WidgetActions.test.ts

@@ -98,7 +98,8 @@ describe('WidgetActions', () => {
       type: 'TestNode',
       rootGraph: { id: 'graph-test' },
       computeSize: vi.fn(),
-      size: [200, 100]
+      size: [200, 100],
+      isSubgraphNode: () => false
     })
   }
 
@@ -225,7 +226,8 @@ describe('WidgetActions', () => {
     const node = fromAny<LGraphNode, unknown>({
       id: 4,
       type: 'SubgraphNode',
-      rootGraph: { id: 'graph-test' }
+      rootGraph: { id: 'graph-test' },
+      isSubgraphNode: () => false
     })
     const widget = {
       name: 'text',

src/components/rightSidePanel/parameters/WidgetActions.vue

@@ -9,7 +9,7 @@ import type { PromotedWidgetSource } from '@/core/graph/subgraph/promotedWidgetT
 import { isPromotedWidgetView } from '@/core/graph/subgraph/promotedWidgetTypes'
 import {
   demoteWidget,
-  getSourceNodeId,
+  isLinkedPromotion,
   promoteWidget
 } from '@/core/graph/subgraph/promotionUtils'
 import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
@@ -47,6 +47,11 @@ const promotionStore = usePromotionStore()
 const { t } = useI18n()
 
 const hasParents = computed(() => parents?.length > 0)
+const isLinked = computed(() => {
+  if (!node.isSubgraphNode() || !isPromotedWidgetView(widget)) return false
+  return isLinkedPromotion(node, widget.sourceNodeId, widget.sourceWidgetName)
+})
+const canToggleVisibility = computed(() => hasParents.value && !isLinked.value)
 const favoriteNode = computed(() =>
   isShownOnParents && hasParents.value ? parents[0] : node
 )
@@ -76,8 +81,6 @@ function handleHideInput() {
   if (!parents?.length) return
 
   if (isPromotedWidgetView(widget)) {
-    const disambiguatingSourceNodeId = getSourceNodeId(widget)
-
     for (const parent of parents) {
       const source: PromotedWidgetSource = {
         sourceNodeId:
@@ -85,7 +88,7 @@ function handleHideInput() {
             ? widget.sourceNodeId
             : String(node.id),
         sourceWidgetName: widget.sourceWidgetName,
-        disambiguatingSourceNodeId
+        disambiguatingSourceNodeId: widget.disambiguatingSourceNodeId
       }
       promotionStore.demote(parent.rootGraph.id, parent.id, source)
       parent.computeSize(parent.size)
@@ -114,6 +117,7 @@ function handleResetToDefault() {
 <template>
   <MoreButton
     is-vertical
+    data-testid="widget-actions-menu-button"
     class="bg-transparent text-muted-foreground transition-all hover:bg-secondary-background-hover hover:text-base-foreground active:scale-95"
   >
     <template #default="{ close }">
@@ -133,7 +137,7 @@ function handleResetToDefault() {
       </Button>
 
       <Button
-        v-if="hasParents"
+        v-if="canToggleVisibility"
         variant="textonly"
         size="unset"
         class="flex w-full items-center gap-2 rounded-sm px-3 py-2 text-sm transition-all active:scale-95"

src/components/rightSidePanel/subgraph/SubgraphEditor.vue

@@ -11,6 +11,7 @@ import {
   getPromotableWidgets,
   getSourceNodeId,
   getWidgetName,
+  isLinkedPromotion,
   isRecommendedWidget,
   promoteWidget,
   pruneDisconnected
@@ -88,14 +89,13 @@ const activeWidgets = computed<WidgetItem[]>({
     promotionStore.setPromotions(
       node.rootGraph.id,
       node.id,
-      value.map(([n, w]) => {
-        const sid = getSourceNodeId(w)
-        return {
-          sourceNodeId: String(n.id),
-          sourceWidgetName: getWidgetName(w),
-          ...(sid && { disambiguatingSourceNodeId: sid })
-        }
-      })
+      value.map(([n, w]) => ({
+        sourceNodeId: String(n.id),
+        sourceWidgetName: getWidgetName(w),
+        disambiguatingSourceNodeId: isPromotedWidgetView(w)
+          ? w.disambiguatingSourceNodeId
+          : undefined
+      }))
     )
     refreshPromotedWidgetRendering()
   }
@@ -123,7 +123,9 @@ const candidateWidgets = computed<WidgetItem[]>(() => {
       !promotionStore.isPromoted(node.rootGraph.id, node.id, {
         sourceNodeId: String(n.id),
         sourceWidgetName: getWidgetName(w),
-        disambiguatingSourceNodeId: getSourceNodeId(w)
+        disambiguatingSourceNodeId: isPromotedWidgetView(w)
+          ? w.disambiguatingSourceNodeId
+          : undefined
       })
   )
 })
@@ -162,6 +164,18 @@ function refreshPromotedWidgetRendering() {
   canvasStore.canvas?.setDirty(true, true)
 }
 
+function isItemLinked([node, widget]: WidgetItem): boolean {
+  return (
+    node.id === -1 ||
+    (!!activeNode.value &&
+      isLinkedPromotion(
+        activeNode.value,
+        String(node.id),
+        getWidgetName(widget)
+      ))
+  )
+}
+
 function toKey(item: WidgetItem) {
   const sid = getSourceNodeId(item[1])
   return sid
@@ -187,8 +201,14 @@ function showAll() {
   }
 }
 function hideAll() {
+  const node = activeNode.value
   for (const item of filteredActive.value) {
     if (String(item[0].id) === '-1') continue
+    if (
+      node &&
+      isLinkedPromotion(node, String(item[0].id), getWidgetName(item[1]))
+    )
+      continue
     demote(item)
   }
 }
@@ -223,6 +243,7 @@ onMounted(() => {
 
       <div
         v-if="filteredActive.length"
+        data-testid="subgraph-editor-shown-section"
         class="flex flex-col border-b border-interface-stroke"
       >
         <div
@@ -244,8 +265,8 @@ onMounted(() => {
             :key="toKey([node, widget])"
             :class="cn(!searchQuery && dragClass, 'bg-comfy-menu-bg')"
             :node-title="node.title"
-            :widget-name="widget.name"
-            :is-physical="node.id === -1"
+            :widget-name="widget.label || widget.name"
+            :is-physical="isItemLinked([node, widget])"
             :is-draggable="!searchQuery"
             @toggle-visibility="demote([node, widget])"
           />
@@ -254,6 +275,7 @@ onMounted(() => {
 
       <div
         v-if="filteredCandidates.length"
+        data-testid="subgraph-editor-hidden-section"
         class="flex flex-col border-b border-interface-stroke"
       >
         <div

src/components/rightSidePanel/subgraph/SubgraphNodeWidget.vue

@@ -1,9 +1,17 @@
 <script setup lang="ts">
+import { computed } from 'vue'
+
 import Button from '@/components/ui/button/Button.vue'
 import { cn } from '@/utils/tailwindUtil'
 import type { ClassValue } from '@/utils/tailwindUtil'
 
-const props = defineProps<{
+const {
+  nodeTitle,
+  widgetName,
+  isDraggable = false,
+  isPhysical = false,
+  class: className
+} = defineProps<{
   nodeTitle: string
   widgetName: string
   isDraggable?: boolean
@@ -14,13 +22,13 @@ defineEmits<{
   (e: 'toggleVisibility'): void
 }>()
 
-function getIcon() {
-  return props.isPhysical
+const icon = computed(() =>
+  isPhysical
     ? 'icon-[lucide--link]'
-    : props.isDraggable
+    : isDraggable
       ? 'icon-[lucide--eye]'
       : 'icon-[lucide--eye-off]'
-}
+)
 </script>
 
 <template>
@@ -29,8 +37,8 @@ function getIcon() {
       cn(
         'flex items-center gap-1 rounded-sm px-2 py-1 break-all',
         'bg-node-component-surface',
-        props.isDraggable && 'ring-accent-background hover:ring-1',
-        props.class
+        isDraggable && 'ring-accent-background hover:ring-1',
+        className
       )
     "
   >
@@ -38,15 +46,18 @@ function getIcon() {
       <div class="line-clamp-1 text-xs text-text-secondary">
         {{ nodeTitle }}
       </div>
-      <div class="line-clamp-1 text-sm/8">{{ widgetName }}</div>
+      <div class="line-clamp-1 text-sm/8" data-testid="subgraph-widget-label">
+        {{ widgetName }}
+      </div>
     </div>
     <Button
       variant="muted-textonly"
       size="sm"
+      data-testid="subgraph-widget-toggle"
       :disabled="isPhysical"
       @click.stop="$emit('toggleVisibility')"
     >
-      <i :class="getIcon()" />
+      <i :class="icon" :data-testid="isPhysical ? 'icon-link' : 'icon-eye'" />
     </Button>
     <div
       v-if="isDraggable"

src/composables/graph/useNodeErrorFlagSync.ts

@@ -3,6 +3,7 @@ import { computed, watch } from 'vue'
 
 import type { LGraph, LGraphNode } from '@/lib/litegraph/src/litegraph'
 import type { useMissingModelStore } from '@/platform/missingModel/missingModelStore'
+import type { useMissingMediaStore } from '@/platform/missingMedia/missingMediaStore'
 import { useSettingStore } from '@/platform/settings/settingStore'
 import { app } from '@/scripts/app'
 import type { NodeError } from '@/schemas/apiSchema'
@@ -32,7 +33,8 @@ function setNodeHasErrors(node: LGraphNode, hasErrors: boolean): void {
 function reconcileNodeErrorFlags(
   rootGraph: LGraph,
   nodeErrors: Record<string, NodeError> | null,
-  missingModelExecIds: Set<string>
+  missingModelExecIds: Set<string>,
+  missingMediaExecIds: Set<string> = new Set()
 ): void {
   // Collect nodes and slot info that should be flagged
   // Includes both error-owning nodes and their ancestor containers
@@ -64,6 +66,11 @@ function reconcileNodeErrorFlags(
     if (node) flaggedNodes.add(node)
   }
 
+  for (const execId of missingMediaExecIds) {
+    const node = getNodeByExecutionId(rootGraph, execId)
+    if (node) flaggedNodes.add(node)
+  }
+
   forEachNode(rootGraph, (node) => {
     setNodeHasErrors(node, flaggedNodes.has(node))
 
@@ -78,7 +85,8 @@ function reconcileNodeErrorFlags(
 
 export function useNodeErrorFlagSync(
   lastNodeErrors: Ref<Record<string, NodeError> | null>,
-  missingModelStore: ReturnType<typeof useMissingModelStore>
+  missingModelStore: ReturnType<typeof useMissingModelStore>,
+  missingMediaStore: ReturnType<typeof useMissingMediaStore>
 ): () => void {
   const settingStore = useSettingStore()
   const showErrorsTab = computed(() =>
@@ -89,12 +97,13 @@ export function useNodeErrorFlagSync(
     [
       lastNodeErrors,
       () => missingModelStore.missingModelNodeIds,
+      () => missingMediaStore.missingMediaNodeIds,
       showErrorsTab
     ],
     () => {
       if (!app.isGraphReady) return
-      // Legacy (LGraphNode) only: suppress missing-model error flags when
-      // the Errors tab is hidden, since legacy nodes lack the per-widget
+      // Legacy (LGraphNode) only: suppress missing-model/media error flags
+      // when the Errors tab is hidden, since legacy nodes lack the per-widget
       // red highlight that Vue nodes use to indicate *why* a node has errors.
       // Vue nodes compute hasAnyError independently and are unaffected.
       reconcileNodeErrorFlags(
@@ -102,6 +111,9 @@ export function useNodeErrorFlagSync(
         lastNodeErrors.value,
         showErrorsTab.value
           ? missingModelStore.missingModelAncestorExecutionIds
+          : new Set(),
+        showErrorsTab.value
+          ? missingMediaStore.missingMediaAncestorExecutionIds
           : new Set()
       )
     },

src/core/graph/subgraph/promotionUtils.test.ts

@@ -20,6 +20,7 @@ import {
   CANVAS_IMAGE_PREVIEW_WIDGET,
   getPromotableWidgets,
   hasUnpromotedWidgets,
+  isLinkedPromotion,
   isPreviewPseudoWidget,
   promoteRecommendedWidgets,
   pruneDisconnected
@@ -334,3 +335,84 @@ describe('hasUnpromotedWidgets', () => {
     expect(hasUnpromotedWidgets(subgraphNode)).toBe(false)
   })
 })
+
+describe('isLinkedPromotion', () => {
+  beforeEach(() => {
+    setActivePinia(createTestingPinia({ stubActions: false }))
+  })
+
+  function linkedWidget(
+    sourceNodeId: string,
+    sourceWidgetName: string,
+    extra: Record<string, unknown> = {}
+  ): IBaseWidget {
+    return {
+      sourceNodeId,
+      sourceWidgetName,
+      name: 'value',
+      type: 'text',
+      value: '',
+      options: {},
+      y: 0,
+      ...extra
+    } as unknown as IBaseWidget
+  }
+
+  function createSubgraphWithInputs(count = 1) {
+    const subgraph = createTestSubgraph({
+      inputs: Array.from({ length: count }, (_, i) => ({
+        name: `input_${i}`,
+        type: 'STRING' as const
+      }))
+    })
+    return createTestSubgraphNode(subgraph)
+  }
+
+  it('returns true when an input has a matching _widget', () => {
+    const subgraphNode = createSubgraphWithInputs()
+    subgraphNode.inputs[0]._widget = linkedWidget('3', 'text')
+
+    expect(isLinkedPromotion(subgraphNode, '3', 'text')).toBe(true)
+  })
+
+  it('returns false when no inputs exist or none match', () => {
+    const subgraph = createTestSubgraph()
+    const subgraphNode = createTestSubgraphNode(subgraph)
+
+    expect(isLinkedPromotion(subgraphNode, '999', 'nonexistent')).toBe(false)
+  })
+
+  it('returns false when sourceNodeId matches but sourceWidgetName does not', () => {
+    const subgraphNode = createSubgraphWithInputs()
+    subgraphNode.inputs[0]._widget = linkedWidget('3', 'text')
+
+    expect(isLinkedPromotion(subgraphNode, '3', 'wrong_name')).toBe(false)
+  })
+
+  it('returns false when _widget is undefined on input', () => {
+    const subgraphNode = createSubgraphWithInputs()
+
+    expect(isLinkedPromotion(subgraphNode, '3', 'text')).toBe(false)
+  })
+
+  it('matches by sourceNodeId even when disambiguatingSourceNodeId is present', () => {
+    const subgraphNode = createSubgraphWithInputs()
+    subgraphNode.inputs[0]._widget = linkedWidget('6', 'text', {
+      disambiguatingSourceNodeId: '1'
+    })
+
+    expect(isLinkedPromotion(subgraphNode, '6', 'text')).toBe(true)
+    expect(isLinkedPromotion(subgraphNode, '1', 'text')).toBe(false)
+  })
+
+  it('identifies multiple linked widgets across different inputs', () => {
+    const subgraphNode = createSubgraphWithInputs(2)
+    subgraphNode.inputs[0]._widget = linkedWidget('3', 'string_a')
+    subgraphNode.inputs[1]._widget = linkedWidget('4', 'value')
+
+    expect(isLinkedPromotion(subgraphNode, '3', 'string_a')).toBe(true)
+    expect(isLinkedPromotion(subgraphNode, '4', 'value')).toBe(true)
+    expect(isLinkedPromotion(subgraphNode, '3', 'value')).toBe(false)
+    expect(isLinkedPromotion(subgraphNode, '5', 'string_a')).toBe(false)
+  })
+})

src/core/graph/subgraph/promotionUtils.ts

@@ -27,6 +27,27 @@ export function getWidgetName(w: IBaseWidget): string {
   return isPromotedWidgetView(w) ? w.sourceWidgetName : w.name
 }
 
+/**
+ * Returns true if the given promotion entry corresponds to a linked promotion
+ * on the subgraph node. Linked promotions are driven by subgraph input
+ * connections and cannot be independently hidden or shown.
+ */
+export function isLinkedPromotion(
+  subgraphNode: SubgraphNode,
+  sourceNodeId: string,
+  sourceWidgetName: string
+): boolean {
+  return subgraphNode.inputs.some((input) => {
+    const w = input._widget
+    return (
+      w &&
+      isPromotedWidgetView(w) &&
+      w.sourceNodeId === sourceNodeId &&
+      w.sourceWidgetName === sourceWidgetName
+    )
+  })
+}
+
 export function getSourceNodeId(w: IBaseWidget): string | undefined {
   if (!isPromotedWidgetView(w)) return undefined
   return w.disambiguatingSourceNodeId ?? w.sourceNodeId
@@ -39,7 +60,9 @@ function toPromotionSource(
   return {
     sourceNodeId: String(node.id),
     sourceWidgetName: getWidgetName(widget),
-    disambiguatingSourceNodeId: getSourceNodeId(widget)
+    disambiguatingSourceNodeId: isPromotedWidgetView(widget)
+      ? widget.disambiguatingSourceNodeId
+      : undefined
   }
 }
 

src/locales/en/main.json

@@ -3528,6 +3528,23 @@
       "missingModelsTitle": "Missing Models",
       "assetLoadTimeout": "Model detection timed out. Try reloading the workflow.",
       "downloadAll": "Download all"
+    },
+    "missingMedia": {
+      "missingMediaTitle": "Missing Inputs",
+      "image": "Images",
+      "video": "Videos",
+      "audio": "Audio",
+      "locateNode": "Locate node",
+      "expandNodes": "Show referencing nodes",
+      "collapseNodes": "Hide referencing nodes",
+      "uploadFile": "Upload {type}",
+      "uploading": "Uploading...",
+      "uploaded": "Uploaded",
+      "selectedFromLibrary": "Selected from library",
+      "useFromLibrary": "Use from Library",
+      "confirmSelection": "Confirm selection",
+      "cancelSelection": "Cancel selection",
+      "or": "OR"
     }
   },
   "errorOverlay": {

src/platform/missingMedia/components/MissingMediaCard.vue

@@ -0,0 +1,61 @@
+<template>
+  <div class="px-4 pb-2">
+    <div
+      v-for="group in missingMediaGroups"
+      :key="group.mediaType"
+      class="flex w-full flex-col border-t border-interface-stroke py-2 first:border-t-0 first:pt-0"
+    >
+      <!-- Media type header -->
+      <div class="flex h-8 w-full items-center">
+        <p
+          class="min-w-0 flex-1 truncate text-sm font-medium text-destructive-background-hover"
+        >
+          <i
+            aria-hidden="true"
+            :class="MEDIA_TYPE_ICONS[group.mediaType]"
+            class="mr-1 size-3.5 align-text-bottom"
+          />
+          {{ t(`rightSidePanel.missingMedia.${group.mediaType}`) }}
+          ({{ group.items.length }})
+        </p>
+      </div>
+
+      <!-- Media file rows -->
+      <div class="flex flex-col gap-1 overflow-hidden pl-2">
+        <MissingMediaRow
+          v-for="item in group.items"
+          :key="item.name"
+          :item="item"
+          :show-node-id-badge="showNodeIdBadge"
+          @locate-node="emit('locateNode', $event)"
+        />
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'
+import type {
+  MissingMediaGroup,
+  MediaType
+} from '@/platform/missingMedia/types'
+import MissingMediaRow from '@/platform/missingMedia/components/MissingMediaRow.vue'
+
+const { missingMediaGroups } = defineProps<{
+  missingMediaGroups: MissingMediaGroup[]
+  showNodeIdBadge: boolean
+}>()
+
+const emit = defineEmits<{
+  locateNode: [nodeId: string]
+}>()
+
+const { t } = useI18n()
+
+const MEDIA_TYPE_ICONS: Record<MediaType, string> = {
+  image: 'icon-[lucide--image]',
+  video: 'icon-[lucide--video]',
+  audio: 'icon-[lucide--music]'
+}
+</script>

src/platform/missingMedia/components/MissingMediaLibrarySelect.vue

@@ -0,0 +1,147 @@
+<template>
+  <div class="flex flex-col gap-2">
+    <div v-if="showDivider" class="flex items-center justify-center py-0.5">
+      <span class="text-xs font-bold text-muted-foreground">
+        {{ t('rightSidePanel.missingMedia.or') }}
+      </span>
+    </div>
+
+    <Select
+      :model-value="modelValue"
+      :disabled="options.length === 0"
+      @update:model-value="handleSelect"
+    >
+      <SelectTrigger
+        size="md"
+        class="border-transparent bg-secondary-background text-xs hover:border-interface-stroke"
+      >
+        <SelectValue
+          :placeholder="t('rightSidePanel.missingMedia.useFromLibrary')"
+        />
+      </SelectTrigger>
+
+      <SelectContent class="max-h-72">
+        <template v-if="options.length > SEARCH_THRESHOLD" #prepend>
+          <div class="px-1 pb-1.5">
+            <div
+              class="flex items-center gap-1.5 rounded-md border border-border-default px-2"
+            >
+              <i
+                aria-hidden="true"
+                class="icon-[lucide--search] size-3.5 shrink-0 text-muted-foreground"
+              />
+              <input
+                v-model="filterQuery"
+                type="text"
+                :aria-label="t('g.searchPlaceholder', { subject: '' })"
+                class="h-7 w-full border-none bg-transparent text-xs outline-none placeholder:text-muted-foreground"
+                :placeholder="t('g.searchPlaceholder', { subject: '' })"
+                @keydown.stop
+              />
+            </div>
+          </div>
+        </template>
+
+        <SelectItem
+          v-for="option in filteredOptions"
+          :key="option.value"
+          :value="option.value"
+          class="text-xs"
+        >
+          <div class="flex items-center gap-2">
+            <img
+              v-if="mediaType === 'image'"
+              :src="getPreviewUrl(option.value)"
+              alt=""
+              class="size-8 shrink-0 rounded-sm object-cover"
+              loading="lazy"
+            />
+            <video
+              v-else-if="mediaType === 'video'"
+              aria-hidden="true"
+              :src="getPreviewUrl(option.value)"
+              class="size-8 shrink-0 rounded-sm object-cover"
+              preload="metadata"
+              muted
+            />
+            <i
+              v-else
+              aria-hidden="true"
+              class="icon-[lucide--music] size-5 shrink-0 text-muted-foreground"
+            />
+            <span class="min-w-0 truncate">{{ option.name }}</span>
+          </div>
+        </SelectItem>
+        <div
+          v-if="filteredOptions.length === 0"
+          role="status"
+          class="px-3 py-2 text-xs text-muted-foreground"
+        >
+          {{ t('g.noResultsFound') }}
+        </div>
+      </SelectContent>
+    </Select>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useFuse } from '@vueuse/integrations/useFuse'
+import Select from '@/components/ui/select/Select.vue'
+import SelectContent from '@/components/ui/select/SelectContent.vue'
+import SelectTrigger from '@/components/ui/select/SelectTrigger.vue'
+import SelectValue from '@/components/ui/select/SelectValue.vue'
+import SelectItem from '@/components/ui/select/SelectItem.vue'
+import type { MediaType } from '@/platform/missingMedia/types'
+import { api } from '@/scripts/api'
+
+const {
+  options,
+  showDivider = false,
+  mediaType
+} = defineProps<{
+  modelValue: string | undefined
+  options: { name: string; value: string }[]
+  showDivider?: boolean
+  mediaType: MediaType
+}>()
+
+const emit = defineEmits<{
+  select: [value: string]
+}>()
+
+const { t } = useI18n()
+
+const SEARCH_THRESHOLD = 4
+const filterQuery = ref('')
+
+watch(
+  () => options.length,
+  (len) => {
+    if (len <= SEARCH_THRESHOLD) filterQuery.value = ''
+  }
+)
+
+const { results: fuseResults } = useFuse(filterQuery, () => options, {
+  fuseOptions: {
+    keys: ['name'],
+    threshold: 0.4,
+    ignoreLocation: true
+  },
+  matchAllWhenSearchEmpty: true
+})
+
+const filteredOptions = computed(() => fuseResults.value.map((r) => r.item))
+
+function getPreviewUrl(filename: string): string {
+  return api.apiURL(`/view?filename=${encodeURIComponent(filename)}&type=input`)
+}
+
+function handleSelect(value: unknown) {
+  if (typeof value === 'string') {
+    filterQuery.value = ''
+    emit('select', value)
+  }
+}
+</script>

src/platform/missingMedia/components/MissingMediaRow.vue

@@ -0,0 +1,318 @@
+<template>
+  <div data-testid="missing-media-row" class="flex w-full flex-col pb-3">
+    <!-- File header -->
+    <div class="flex h-8 w-full items-center gap-2">
+      <i
+        aria-hidden="true"
+        class="text-foreground icon-[lucide--file] size-4 shrink-0"
+      />
+
+      <!-- Single node: show node display name instead of filename -->
+      <template v-if="isSingleNode">
+        <span
+          v-if="showNodeIdBadge"
+          class="shrink-0 rounded-md bg-secondary-background-selected px-2 py-0.5 font-mono text-xs font-bold text-muted-foreground"
+        >
+          #{{ item.referencingNodes[0].nodeId }}
+        </span>
+        <p
+          class="text-foreground min-w-0 flex-1 truncate text-sm font-medium"
+          :title="singleNodeLabel"
+        >
+          {{ singleNodeLabel }}
+        </p>
+      </template>
+
+      <!-- Multiple nodes: show filename with count -->
+      <p
+        v-else
+        class="text-foreground min-w-0 flex-1 truncate text-sm font-medium"
+        :title="displayName"
+      >
+        {{ displayName }}
+        ({{ item.referencingNodes.length }})
+      </p>
+
+      <!-- Confirm button (visible when pending selection exists) -->
+      <Button
+        data-testid="missing-media-confirm-button"
+        variant="textonly"
+        size="icon-sm"
+        :aria-label="t('rightSidePanel.missingMedia.confirmSelection')"
+        :disabled="!isPending"
+        :class="
+          cn(
+            'size-8 shrink-0 rounded-lg transition-colors',
+            isPending ? 'bg-primary/10 hover:bg-primary/15' : 'opacity-20'
+          )
+        "
+        @click="confirmSelection(item.name)"
+      >
+        <i
+          aria-hidden="true"
+          class="icon-[lucide--check] size-4"
+          :class="isPending ? 'text-primary' : 'text-foreground'"
+        />
+      </Button>
+
+      <!-- Locate button (single node only) -->
+      <Button
+        v-if="isSingleNode"
+        data-testid="missing-media-locate-button"
+        variant="textonly"
+        size="icon-sm"
+        :aria-label="t('rightSidePanel.missingMedia.locateNode')"
+        class="size-8 shrink-0 text-muted-foreground hover:text-base-foreground"
+        @click="emit('locateNode', String(item.referencingNodes[0].nodeId))"
+      >
+        <i aria-hidden="true" class="icon-[lucide--locate] size-3" />
+      </Button>
+
+      <!-- Expand button (multiple nodes only) -->
+      <Button
+        v-if="!isSingleNode"
+        variant="textonly"
+        size="icon-sm"
+        :aria-label="
+          expanded
+            ? t('rightSidePanel.missingMedia.collapseNodes')
+            : t('rightSidePanel.missingMedia.expandNodes')
+        "
+        :aria-expanded="expanded"
+        :class="
+          cn(
+            'size-8 shrink-0 transition-transform duration-200 hover:bg-transparent',
+            expanded && 'rotate-180'
+          )
+        "
+        @click="toggleExpand(item.name)"
+      >
+        <i
+          aria-hidden="true"
+          class="icon-[lucide--chevron-down] size-4 text-muted-foreground"
+        />
+      </Button>
+    </div>
+
+    <!-- Referencing nodes (expandable) -->
+    <TransitionCollapse>
+      <div
+        v-if="expanded && item.referencingNodes.length > 1"
+        class="mb-1 flex flex-col gap-0.5 overflow-hidden pl-6"
+      >
+        <div
+          v-for="nodeRef in item.referencingNodes"
+          :key="`${String(nodeRef.nodeId)}::${nodeRef.widgetName}`"
+          class="flex h-7 items-center"
+        >
+          <span
+            v-if="showNodeIdBadge"
+            class="mr-1 shrink-0 rounded-md bg-secondary-background-selected px-2 py-0.5 font-mono text-xs font-bold text-muted-foreground"
+          >
+            #{{ nodeRef.nodeId }}
+          </span>
+          <p class="min-w-0 flex-1 truncate text-xs text-muted-foreground">
+            {{ getNodeDisplayLabel(String(nodeRef.nodeId), item.name) }}
+          </p>
+          <Button
+            variant="textonly"
+            size="icon-sm"
+            :aria-label="t('rightSidePanel.missingMedia.locateNode')"
+            class="mr-1 size-8 shrink-0 text-muted-foreground hover:text-base-foreground"
+            @click="emit('locateNode', String(nodeRef.nodeId))"
+          >
+            <i aria-hidden="true" class="icon-[lucide--locate] size-3" />
+          </Button>
+        </div>
+      </div>
+    </TransitionCollapse>
+
+    <!-- Status card (uploading, uploaded, or library select) -->
+    <TransitionCollapse>
+      <div
+        v-if="isPending || isUploading"
+        data-testid="missing-media-status-card"
+        role="status"
+        aria-live="polite"
+        class="bg-foreground/5 relative mt-1 overflow-hidden rounded-lg border border-interface-stroke p-2"
+      >
+        <div class="relative z-10 flex items-center gap-2">
+          <div class="flex size-8 shrink-0 items-center justify-center">
+            <i
+              v-if="currentUpload?.status === 'uploading'"
+              aria-hidden="true"
+              class="icon-[lucide--loader-circle] size-5 animate-spin text-muted-foreground"
+            />
+            <i
+              v-else
+              aria-hidden="true"
+              class="icon-[lucide--file-check] size-5 text-muted-foreground"
+            />
+          </div>
+
+          <div class="flex min-w-0 flex-1 flex-col justify-center">
+            <span class="text-foreground truncate text-xs/tight font-medium">
+              {{ pendingDisplayName }}
+            </span>
+            <span class="mt-0.5 text-xs/tight text-muted-foreground">
+              <template v-if="currentUpload?.status === 'uploading'">
+                {{ t('rightSidePanel.missingMedia.uploading') }}
+              </template>
+              <template v-else-if="currentUpload?.status === 'uploaded'">
+                {{ t('rightSidePanel.missingMedia.uploaded') }}
+              </template>
+              <template v-else>
+                {{ t('rightSidePanel.missingMedia.selectedFromLibrary') }}
+              </template>
+            </span>
+          </div>
+
+          <Button
+            data-testid="missing-media-cancel-button"
+            variant="textonly"
+            size="icon-sm"
+            :aria-label="t('rightSidePanel.missingMedia.cancelSelection')"
+            class="relative z-10 size-6 shrink-0 text-muted-foreground hover:text-base-foreground"
+            @click="cancelSelection(item.name)"
+          >
+            <i aria-hidden="true" class="icon-[lucide--circle-x] size-4" />
+          </Button>
+        </div>
+      </div>
+    </TransitionCollapse>
+
+    <!-- Upload + Library (when no pending selection) -->
+    <TransitionCollapse>
+      <div v-if="!isPending && !isUploading" class="mt-1 flex flex-col gap-1">
+        <!-- Upload dropzone -->
+        <div ref="dropZoneRef" class="flex w-full flex-col py-1">
+          <button
+            data-testid="missing-media-upload-dropzone"
+            type="button"
+            :class="
+              cn(
+                'flex w-full cursor-pointer items-center justify-center rounded-lg border border-dashed border-component-node-border bg-transparent px-3 py-2 text-xs text-muted-foreground transition-colors hover:border-base-foreground hover:text-base-foreground',
+                isOverDropZone && 'border-primary text-primary'
+              )
+            "
+            @click="openFilePicker()"
+          >
+            {{
+              t('rightSidePanel.missingMedia.uploadFile', {
+                type: extensionHint
+              })
+            }}
+          </button>
+        </div>
+
+        <!-- OR separator + Use from Library -->
+        <MissingMediaLibrarySelect
+          data-testid="missing-media-library-select"
+          :model-value="undefined"
+          :options="libraryOptions"
+          :show-divider="true"
+          :media-type="item.mediaType"
+          @select="handleLibrarySelect(item.name, $event)"
+        />
+      </div>
+    </TransitionCollapse>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+import { useDropZone, useFileDialog } from '@vueuse/core'
+import { storeToRefs } from 'pinia'
+import { useI18n } from 'vue-i18n'
+import { cn } from '@/utils/tailwindUtil'
+import Button from '@/components/ui/button/Button.vue'
+import TransitionCollapse from '@/components/rightSidePanel/layout/TransitionCollapse.vue'
+import MissingMediaLibrarySelect from '@/platform/missingMedia/components/MissingMediaLibrarySelect.vue'
+import type { MissingMediaViewModel } from '@/platform/missingMedia/types'
+import { useMissingMediaStore } from '@/platform/missingMedia/missingMediaStore'
+import {
+  useMissingMediaInteractions,
+  getNodeDisplayLabel,
+  getMediaDisplayName
+} from '@/platform/missingMedia/composables/useMissingMediaInteractions'
+
+const { item, showNodeIdBadge } = defineProps<{
+  item: MissingMediaViewModel
+  showNodeIdBadge: boolean
+}>()
+
+const emit = defineEmits<{
+  locateNode: [nodeId: string]
+}>()
+
+const { t } = useI18n()
+
+const store = useMissingMediaStore()
+const { uploadState, pendingSelection } = storeToRefs(store)
+
+const {
+  isExpanded,
+  toggleExpand,
+  getAcceptType,
+  getExtensionHint,
+  getLibraryOptions,
+  handleLibrarySelect,
+  handleUpload,
+  confirmSelection,
+  cancelSelection,
+  hasPendingSelection
+} = useMissingMediaInteractions()
+
+const displayName = getMediaDisplayName(item.name)
+const isSingleNode = item.referencingNodes.length === 1
+const singleNodeLabel = isSingleNode
+  ? getNodeDisplayLabel(String(item.referencingNodes[0].nodeId), item.name)
+  : ''
+const acceptType = getAcceptType(item.mediaType)
+const extensionHint = getExtensionHint(item.mediaType)
+
+const expanded = computed(() => isExpanded(item.name))
+const matchingCandidate = computed(() => {
+  const candidates = store.missingMediaCandidates
+  if (!candidates?.length) return null
+  return candidates.find((c) => c.name === item.name) ?? null
+})
+const libraryOptions = computed(() => {
+  const candidate = matchingCandidate.value
+  if (!candidate) return []
+  return getLibraryOptions(candidate)
+})
+
+const isPending = computed(() => hasPendingSelection(item.name))
+const isUploading = computed(
+  () => uploadState.value[item.name]?.status === 'uploading'
+)
+const currentUpload = computed(() => uploadState.value[item.name])
+const pendingDisplayName = computed(() => {
+  if (currentUpload.value) return currentUpload.value.fileName
+  const pending = pendingSelection.value[item.name]
+  return pending ? getMediaDisplayName(pending) : ''
+})
+
+const dropZoneRef = ref<HTMLElement | null>(null)
+const { isOverDropZone } = useDropZone(dropZoneRef, {
+  onDrop: (_files, event) => {
+    event?.stopPropagation()
+    const file = _files?.[0]
+    if (file) {
+      handleUpload(file, item.name, item.mediaType)
+    }
+  }
+})
+
+const { open: openFilePicker, onChange: onFileSelected } = useFileDialog({
+  accept: acceptType,
+  multiple: false
+})
+onFileSelected((files) => {
+  const file = files?.[0]
+  if (file) {
+    handleUpload(file, item.name, item.mediaType)
+  }
+})
+</script>

src/platform/missingMedia/composables/useMissingMediaInteractions.ts

@@ -0,0 +1,224 @@
+import { app } from '@/scripts/app'
+import { api } from '@/scripts/api'
+import { useToastStore } from '@/platform/updates/common/toastStore'
+import { useAssetsStore } from '@/stores/assetsStore'
+import { useMissingMediaStore } from '@/platform/missingMedia/missingMediaStore'
+import type {
+  MissingMediaCandidate,
+  MediaType
+} from '@/platform/missingMedia/types'
+import { getNodeByExecutionId } from '@/utils/graphTraversalUtil'
+import { isCloud } from '@/platform/distribution/types'
+import { addToComboValues, resolveComboValues } from '@/utils/litegraphUtil'
+import { resolveNodeDisplayName } from '@/utils/nodeTitleUtil'
+import { st } from '@/i18n'
+import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
+import type { IComboWidget } from '@/lib/litegraph/src/types/widgets'
+import {
+  ACCEPTED_IMAGE_TYPES,
+  ACCEPTED_VIDEO_TYPES
+} from '@/utils/mediaUploadUtil'
+
+const MEDIA_ACCEPT_MAP: Record<MediaType, string> = {
+  image: ACCEPTED_IMAGE_TYPES,
+  video: ACCEPTED_VIDEO_TYPES,
+  audio: 'audio/*'
+}
+
+function getMediaComboWidget(
+  candidate: MissingMediaCandidate
+): { node: LGraphNode; widget: IComboWidget } | null {
+  const graph = app.rootGraph
+  if (!graph || candidate.nodeId == null) return null
+
+  const node = getNodeByExecutionId(graph, String(candidate.nodeId))
+  if (!node) return null
+
+  const widget = node.widgets?.find(
+    (w) => w.name === candidate.widgetName && w.type === 'combo'
+  ) as IComboWidget | undefined
+  if (!widget) return null
+
+  return { node, widget }
+}
+
+function resolveLibraryOptions(
+  candidate: MissingMediaCandidate
+): { name: string; value: string }[] {
+  const result = getMediaComboWidget(candidate)
+  if (!result) return []
+
+  return resolveComboValues(result.widget)
+    .filter((v) => v !== candidate.name)
+    .map((v) => ({ name: getMediaDisplayName(v), value: v }))
+}
+
+function applyValueToNodes(
+  candidates: MissingMediaCandidate[],
+  name: string,
+  newValue: string
+) {
+  const matching = candidates.filter((c) => c.name === name)
+  for (const c of matching) {
+    const result = getMediaComboWidget(c)
+    if (!result) continue
+
+    addToComboValues(result.widget, newValue)
+    result.widget.value = newValue
+    result.widget.callback?.(newValue)
+    result.node.graph?.setDirtyCanvas(true, true)
+  }
+}
+
+export function getNodeDisplayLabel(
+  nodeId: string | number,
+  fallback: string
+): string {
+  const graph = app.rootGraph
+  if (!graph) return fallback
+  const node = getNodeByExecutionId(graph, String(nodeId))
+  return resolveNodeDisplayName(node, {
+    emptyLabel: fallback,
+    untitledLabel: fallback,
+    st
+  })
+}
+
+/**
+ * Resolve display name for a media file.
+ * Cloud widgets store asset hashes as values; this resolves them to
+ * human-readable names via assetsStore.getInputName().
+ */
+export function getMediaDisplayName(name: string): string {
+  if (!isCloud) return name
+  return useAssetsStore().getInputName(name)
+}
+
+export function useMissingMediaInteractions() {
+  const store = useMissingMediaStore()
+  const assetsStore = useAssetsStore()
+
+  function isExpanded(key: string): boolean {
+    return store.expandState[key] ?? false
+  }
+
+  function toggleExpand(key: string) {
+    store.expandState[key] = !isExpanded(key)
+  }
+
+  function getAcceptType(mediaType: MediaType): string {
+    return MEDIA_ACCEPT_MAP[mediaType]
+  }
+
+  function getExtensionHint(mediaType: MediaType): string {
+    if (mediaType === 'audio') return 'audio'
+    const exts = MEDIA_ACCEPT_MAP[mediaType]
+      .split(',')
+      .map((mime) => mime.split('/')[1])
+      .join(', ')
+    return `${exts}, ...`
+  }
+
+  function getLibraryOptions(
+    candidate: MissingMediaCandidate
+  ): { name: string; value: string }[] {
+    return resolveLibraryOptions(candidate)
+  }
+
+  /** Step 1: Store selection from library (does not apply yet). */
+  function handleLibrarySelect(name: string, value: string) {
+    store.pendingSelection[name] = value
+  }
+
+  /** Step 1: Upload file and store result as pending (does not apply yet). */
+  async function handleUpload(file: File, name: string, mediaType: MediaType) {
+    if (!file.type || !file.type.startsWith(`${mediaType}/`)) {
+      useToastStore().addAlert(
+        st(
+          'toastMessages.unsupportedFileType',
+          'Unsupported file type. Please select a valid file.'
+        )
+      )
+      return
+    }
+
+    store.uploadState[name] = { fileName: file.name, status: 'uploading' }
+
+    try {
+      const body = new FormData()
+      body.append('image', file)
+
+      const resp = await api.fetchApi('/upload/image', {
+        method: 'POST',
+        body
+      })
+
+      if (resp.status !== 200) {
+        useToastStore().addAlert(
+          st(
+            'toastMessages.uploadFailed',
+            'Failed to upload file. Please try again.'
+          )
+        )
+        delete store.uploadState[name]
+        return
+      }
+
+      const data = await resp.json()
+      const uploadedPath: string = data.subfolder
+        ? `${data.subfolder}/${data.name}`
+        : data.name
+
+      store.uploadState[name] = { fileName: file.name, status: 'uploaded' }
+      store.pendingSelection[name] = uploadedPath
+
+      // Refresh assets store (non-critical — upload already succeeded)
+      try {
+        await assetsStore.updateInputs()
+      } catch {
+        // Asset list refresh failed but upload is valid; selection can proceed
+      }
+    } catch {
+      useToastStore().addAlert(
+        st(
+          'toastMessages.uploadFailed',
+          'Failed to upload file. Please try again.'
+        )
+      )
+      delete store.uploadState[name]
+    }
+  }
+
+  /** Step 2: Apply pending selection to widgets and remove from missing list. */
+  function confirmSelection(name: string) {
+    const value = store.pendingSelection[name]
+    if (!value || !store.missingMediaCandidates) return
+
+    applyValueToNodes(store.missingMediaCandidates, name, value)
+    store.removeMissingMediaByName(name)
+    delete store.pendingSelection[name]
+    delete store.uploadState[name]
+  }
+
+  function cancelSelection(name: string) {
+    delete store.pendingSelection[name]
+    delete store.uploadState[name]
+  }
+
+  function hasPendingSelection(name: string): boolean {
+    return name in store.pendingSelection
+  }
+
+  return {
+    isExpanded,
+    toggleExpand,
+    getAcceptType,
+    getExtensionHint,
+    getLibraryOptions,
+    handleLibrarySelect,
+    handleUpload,
+    confirmSelection,
+    cancelSelection,
+    hasPendingSelection
+  }
+}

src/platform/missingMedia/missingMediaScan.test.ts

@@ -0,0 +1,207 @@
+import { describe, expect, it } from 'vitest'
+import {
+  verifyCloudMediaCandidates,
+  groupCandidatesByName,
+  groupCandidatesByMediaType
+} from './missingMediaScan'
+import type { MissingMediaCandidate } from './types'
+
+function makeCandidate(
+  nodeId: string,
+  name: string,
+  overrides: Partial<MissingMediaCandidate> = {}
+): MissingMediaCandidate {
+  return {
+    nodeId,
+    nodeType: 'LoadImage',
+    widgetName: 'image',
+    mediaType: 'image',
+    name,
+    isMissing: true,
+    ...overrides
+  }
+}
+
+describe('groupCandidatesByName', () => {
+  it('groups candidates with the same name', () => {
+    const candidates = [
+      makeCandidate('1', 'photo.png'),
+      makeCandidate('2', 'photo.png'),
+      makeCandidate('3', 'other.png')
+    ]
+
+    const result = groupCandidatesByName(candidates)
+    expect(result).toHaveLength(2)
+
+    const photoGroup = result.find((g) => g.name === 'photo.png')
+    expect(photoGroup?.referencingNodes).toHaveLength(2)
+    expect(photoGroup?.mediaType).toBe('image')
+
+    const otherGroup = result.find((g) => g.name === 'other.png')
+    expect(otherGroup?.referencingNodes).toHaveLength(1)
+  })
+
+  it('returns empty array for empty input', () => {
+    expect(groupCandidatesByName([])).toEqual([])
+  })
+})
+
+describe('groupCandidatesByMediaType', () => {
+  it('groups by media type in order: image, video, audio', () => {
+    const candidates = [
+      makeCandidate('1', 'sound.mp3', {
+        nodeType: 'LoadAudio',
+        widgetName: 'audio',
+        mediaType: 'audio'
+      }),
+      makeCandidate('2', 'photo.png'),
+      makeCandidate('3', 'clip.mp4', {
+        nodeType: 'LoadVideo',
+        widgetName: 'file',
+        mediaType: 'video'
+      })
+    ]
+
+    const result = groupCandidatesByMediaType(candidates)
+    expect(result).toHaveLength(3)
+    expect(result[0].mediaType).toBe('image')
+    expect(result[1].mediaType).toBe('video')
+    expect(result[2].mediaType).toBe('audio')
+  })
+
+  it('omits media types with no candidates', () => {
+    const candidates = [
+      makeCandidate('1', 'clip.mp4', {
+        nodeType: 'LoadVideo',
+        widgetName: 'file',
+        mediaType: 'video'
+      })
+    ]
+
+    const result = groupCandidatesByMediaType(candidates)
+    expect(result).toHaveLength(1)
+    expect(result[0].mediaType).toBe('video')
+  })
+
+  it('groups multiple names within the same media type', () => {
+    const candidates = [
+      makeCandidate('1', 'a.png'),
+      makeCandidate('2', 'b.png'),
+      makeCandidate('3', 'a.png')
+    ]
+
+    const result = groupCandidatesByMediaType(candidates)
+    expect(result).toHaveLength(1)
+    expect(result[0].mediaType).toBe('image')
+    expect(result[0].items).toHaveLength(2)
+    expect(
+      result[0].items.find((i) => i.name === 'a.png')?.referencingNodes
+    ).toHaveLength(2)
+  })
+})
+
+describe('verifyCloudMediaCandidates', () => {
+  it('marks candidates missing when not in input assets', async () => {
+    const candidates = [
+      makeCandidate('1', 'abc123.png', { isMissing: undefined }),
+      makeCandidate('2', 'def456.png', { isMissing: undefined })
+    ]
+
+    const mockStore = {
+      updateInputs: async () => {},
+      inputAssets: [{ asset_hash: 'def456.png', name: 'my-photo.png' }]
+    }
+
+    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+
+    expect(candidates[0].isMissing).toBe(true)
+    expect(candidates[1].isMissing).toBe(false)
+  })
+
+  it('calls updateInputs before checking assets', async () => {
+    let updateCalled = false
+    const candidates = [makeCandidate('1', 'abc.png', { isMissing: undefined })]
+
+    const mockStore = {
+      updateInputs: async () => {
+        updateCalled = true
+      },
+      inputAssets: []
+    }
+
+    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+
+    expect(updateCalled).toBe(true)
+  })
+
+  it('respects abort signal before execution', async () => {
+    const controller = new AbortController()
+    controller.abort()
+
+    const candidates = [
+      makeCandidate('1', 'abc123.png', { isMissing: undefined })
+    ]
+
+    await verifyCloudMediaCandidates(candidates, controller.signal)
+
+    expect(candidates[0].isMissing).toBeUndefined()
+  })
+
+  it('respects abort signal after updateInputs', async () => {
+    const controller = new AbortController()
+    const candidates = [makeCandidate('1', 'abc.png', { isMissing: undefined })]
+
+    const mockStore = {
+      updateInputs: async () => {
+        controller.abort()
+      },
+      inputAssets: [{ asset_hash: 'abc.png', name: 'photo.png' }]
+    }
+
+    await verifyCloudMediaCandidates(candidates, controller.signal, mockStore)
+
+    expect(candidates[0].isMissing).toBeUndefined()
+  })
+
+  it('skips candidates already resolved as true', async () => {
+    const candidates = [makeCandidate('1', 'abc.png', { isMissing: true })]
+
+    const mockStore = {
+      updateInputs: async () => {},
+      inputAssets: []
+    }
+
+    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+
+    expect(candidates[0].isMissing).toBe(true)
+  })
+
+  it('skips candidates already resolved as false', async () => {
+    const candidates = [makeCandidate('1', 'abc.png', { isMissing: false })]
+
+    const mockStore = {
+      updateInputs: async () => {},
+      inputAssets: []
+    }
+
+    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+
+    expect(candidates[0].isMissing).toBe(false)
+  })
+
+  it('skips entirely when no pending candidates', async () => {
+    let updateCalled = false
+    const candidates = [makeCandidate('1', 'abc.png', { isMissing: true })]
+
+    const mockStore = {
+      updateInputs: async () => {
+        updateCalled = true
+      },
+      inputAssets: []
+    }
+
+    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+
+    expect(updateCalled).toBe(false)
+  })
+})

src/platform/missingMedia/missingMediaScan.ts

@@ -0,0 +1,159 @@
+import { groupBy } from 'es-toolkit'
+import type { NodeId } from '@/platform/workflow/validation/schemas/workflowSchema'
+import type {
+  MissingMediaCandidate,
+  MissingMediaViewModel,
+  MissingMediaGroup,
+  MediaType
+} from './types'
+import type { LGraph } from '@/lib/litegraph/src/LGraph'
+import type {
+  IBaseWidget,
+  IComboWidget
+} from '@/lib/litegraph/src/types/widgets'
+import {
+  collectAllNodes,
+  getExecutionIdByNode
+} from '@/utils/graphTraversalUtil'
+import { resolveComboValues } from '@/utils/litegraphUtil'
+
+/** Map of node types to their media widget name and media type. */
+const MEDIA_NODE_WIDGETS: Record<
+  string,
+  { widgetName: string; mediaType: MediaType }
+> = {
+  LoadImage: { widgetName: 'image', mediaType: 'image' },
+  LoadVideo: { widgetName: 'file', mediaType: 'video' },
+  LoadAudio: { widgetName: 'audio', mediaType: 'audio' }
+}
+
+function isComboWidget(widget: IBaseWidget): widget is IComboWidget {
+  return widget.type === 'combo'
+}
+
+/**
+ * Scan combo widgets on media nodes for file values that may be missing.
+ *
+ * OSS: `isMissing` resolved immediately via widget options.
+ * Cloud: `isMissing` left `undefined` for async verification.
+ */
+export function scanAllMediaCandidates(
+  rootGraph: LGraph,
+  isCloud: boolean
+): MissingMediaCandidate[] {
+  if (!rootGraph) return []
+
+  const allNodes = collectAllNodes(rootGraph)
+  const candidates: MissingMediaCandidate[] = []
+
+  for (const node of allNodes) {
+    if (!node.widgets?.length) continue
+    if (node.isSubgraphNode?.()) continue
+
+    const mediaInfo = MEDIA_NODE_WIDGETS[node.type]
+    if (!mediaInfo) continue
+
+    const executionId = getExecutionIdByNode(rootGraph, node)
+    if (!executionId) continue
+
+    for (const widget of node.widgets) {
+      if (!isComboWidget(widget)) continue
+      if (widget.name !== mediaInfo.widgetName) continue
+
+      const value = widget.value
+      if (typeof value !== 'string' || !value.trim()) continue
+
+      let isMissing: boolean | undefined
+      if (isCloud) {
+        // Cloud: options may be empty initially; defer to async verification
+        isMissing = undefined
+      } else {
+        const options = resolveComboValues(widget)
+        isMissing = !options.includes(value)
+      }
+
+      candidates.push({
+        nodeId: executionId as NodeId,
+        nodeType: node.type,
+        widgetName: widget.name,
+        mediaType: mediaInfo.mediaType,
+        name: value,
+        isMissing
+      })
+    }
+  }
+
+  return candidates
+}
+
+interface InputVerifier {
+  updateInputs: () => Promise<unknown>
+  inputAssets: Array<{ asset_hash?: string | null; name: string }>
+}
+
+/**
+ * Verify cloud media candidates against the input assets fetched from the
+ * assets store. Mutates candidates' `isMissing` in place.
+ */
+export async function verifyCloudMediaCandidates(
+  candidates: MissingMediaCandidate[],
+  signal?: AbortSignal,
+  assetsStore?: InputVerifier
+): Promise<void> {
+  if (signal?.aborted) return
+
+  const pending = candidates.filter((c) => c.isMissing === undefined)
+  if (pending.length === 0) return
+
+  const store =
+    assetsStore ?? (await import('@/stores/assetsStore')).useAssetsStore()
+
+  await store.updateInputs()
+
+  if (signal?.aborted) return
+
+  const assetHashes = new Set(
+    store.inputAssets.map((a) => a.asset_hash).filter((h): h is string => !!h)
+  )
+
+  for (const c of pending) {
+    c.isMissing = !assetHashes.has(c.name)
+  }
+}
+
+/** Group confirmed-missing candidates by file name into view models. */
+export function groupCandidatesByName(
+  candidates: MissingMediaCandidate[]
+): MissingMediaViewModel[] {
+  const map = new Map<string, MissingMediaViewModel>()
+  for (const c of candidates) {
+    const existing = map.get(c.name)
+    if (existing) {
+      existing.referencingNodes.push({
+        nodeId: c.nodeId,
+        widgetName: c.widgetName
+      })
+    } else {
+      map.set(c.name, {
+        name: c.name,
+        mediaType: c.mediaType,
+        referencingNodes: [{ nodeId: c.nodeId, widgetName: c.widgetName }]
+      })
+    }
+  }
+  return Array.from(map.values())
+}
+
+/** Group confirmed-missing candidates by media type. */
+export function groupCandidatesByMediaType(
+  candidates: MissingMediaCandidate[]
+): MissingMediaGroup[] {
+  const grouped = groupBy(candidates, (c) => c.mediaType)
+  const order: MediaType[] = ['image', 'video', 'audio']
+  return order
+    .filter((t) => t in grouped)
+    .map((mediaType) => ({
+      mediaType,
+      items: groupCandidatesByName(grouped[mediaType])
+    }))
+}

src/platform/missingMedia/missingMediaStore.test.ts

@@ -0,0 +1,197 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { useMissingMediaStore } from './missingMediaStore'
+import type { MissingMediaCandidate } from './types'
+
+// Mock dependencies
+vi.mock('@/renderer/core/canvas/canvasStore', () => ({
+  useCanvasStore: () => ({
+    currentGraph: null
+  })
+}))
+
+vi.mock('@/scripts/app', () => ({
+  app: {
+    rootGraph: null
+  }
+}))
+
+vi.mock('@/utils/graphTraversalUtil', () => ({
+  getActiveGraphNodeIds: () => new Set<string>()
+}))
+
+function makeCandidate(
+  nodeId: string,
+  name: string,
+  mediaType: 'image' | 'video' | 'audio' = 'image'
+): MissingMediaCandidate {
+  return {
+    nodeId,
+    nodeType: 'LoadImage',
+    widgetName: 'image',
+    mediaType,
+    name,
+    isMissing: true
+  }
+}
+
+describe('useMissingMediaStore', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia())
+  })
+
+  it('starts with no missing media', () => {
+    const store = useMissingMediaStore()
+    expect(store.missingMediaCandidates).toBeNull()
+    expect(store.hasMissingMedia).toBe(false)
+    expect(store.missingMediaCount).toBe(0)
+  })
+
+  it('setMissingMedia populates candidates', () => {
+    const store = useMissingMediaStore()
+    const candidates = [makeCandidate('1', 'photo.png')]
+
+    store.setMissingMedia(candidates)
+
+    expect(store.missingMediaCandidates).toHaveLength(1)
+    expect(store.hasMissingMedia).toBe(true)
+    expect(store.missingMediaCount).toBe(1)
+  })
+
+  it('setMissingMedia with empty array clears state', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([makeCandidate('1', 'photo.png')])
+    store.setMissingMedia([])
+
+    expect(store.missingMediaCandidates).toBeNull()
+    expect(store.hasMissingMedia).toBe(false)
+  })
+
+  it('clearMissingMedia resets all state including interaction state', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([
+      makeCandidate('1', 'photo.png'),
+      makeCandidate('2', 'clip.mp4', 'video')
+    ])
+    store.expandState['photo.png'] = true
+    store.uploadState['photo.png'] = {
+      fileName: 'photo.png',
+      status: 'uploaded'
+    }
+    store.pendingSelection['photo.png'] = 'uploaded/photo.png'
+    const controller = store.createVerificationAbortController()
+
+    store.clearMissingMedia()
+
+    expect(store.missingMediaCandidates).toBeNull()
+    expect(store.hasMissingMedia).toBe(false)
+    expect(store.missingMediaCount).toBe(0)
+    expect(controller.signal.aborted).toBe(true)
+    expect(store.expandState).toEqual({})
+    expect(store.uploadState).toEqual({})
+    expect(store.pendingSelection).toEqual({})
+  })
+
+  it('missingMediaNodeIds tracks unique node IDs', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([
+      makeCandidate('1', 'photo.png'),
+      makeCandidate('1', 'other.png'),
+      makeCandidate('2', 'clip.mp4', 'video')
+    ])
+
+    expect(store.missingMediaNodeIds.size).toBe(2)
+    expect(store.missingMediaNodeIds.has('1')).toBe(true)
+    expect(store.missingMediaNodeIds.has('2')).toBe(true)
+  })
+
+  it('hasMissingMediaOnNode checks node presence', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([makeCandidate('42', 'photo.png')])
+
+    expect(store.hasMissingMediaOnNode('42')).toBe(true)
+    expect(store.hasMissingMediaOnNode('99')).toBe(false)
+  })
+
+  it('removeMissingMediaByWidget removes matching node+widget entry', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([
+      makeCandidate('1', 'photo.png'),
+      makeCandidate('2', 'clip.mp4', 'video')
+    ])
+
+    store.removeMissingMediaByWidget('1', 'image')
+
+    expect(store.missingMediaCandidates).toHaveLength(1)
+    expect(store.missingMediaCandidates![0].name).toBe('clip.mp4')
+  })
+
+  it('removeMissingMediaByWidget nulls candidates when last entry removed', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([makeCandidate('1', 'photo.png')])
+
+    store.removeMissingMediaByWidget('1', 'image')
+
+    expect(store.missingMediaCandidates).toBeNull()
+    expect(store.hasMissingMedia).toBe(false)
+  })
+
+  it('removeMissingMediaByWidget ignores non-matching entries', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([makeCandidate('1', 'photo.png')])
+
+    store.removeMissingMediaByWidget('99', 'image')
+
+    expect(store.missingMediaCandidates).toHaveLength(1)
+  })
+
+  it('removeMissingMediaByName clears interaction state for removed name', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([makeCandidate('1', 'photo.png')])
+    store.expandState['photo.png'] = true
+    store.uploadState['photo.png'] = {
+      fileName: 'photo.png',
+      status: 'uploaded'
+    }
+    store.pendingSelection['photo.png'] = 'uploaded/photo.png'
+
+    store.removeMissingMediaByName('photo.png')
+
+    expect(store.expandState['photo.png']).toBeUndefined()
+    expect(store.uploadState['photo.png']).toBeUndefined()
+    expect(store.pendingSelection['photo.png']).toBeUndefined()
+  })
+
+  it('removeMissingMediaByWidget clears interaction state for removed name', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([makeCandidate('1', 'photo.png')])
+    store.pendingSelection['photo.png'] = 'library/photo.png'
+
+    store.removeMissingMediaByWidget('1', 'image')
+
+    expect(store.pendingSelection['photo.png']).toBeUndefined()
+  })
+
+  it('removeMissingMediaByWidget preserves interaction state when other candidates share the name', () => {
+    const store = useMissingMediaStore()
+    store.setMissingMedia([
+      makeCandidate('1', 'photo.png'),
+      makeCandidate('2', 'photo.png')
+    ])
+    store.pendingSelection['photo.png'] = 'library/photo.png'
+
+    store.removeMissingMediaByWidget('1', 'image')
+
+    expect(store.missingMediaCandidates).toHaveLength(1)
+    expect(store.pendingSelection['photo.png']).toBe('library/photo.png')
+  })
+
+  it('createVerificationAbortController aborts previous controller', () => {
+    const store = useMissingMediaStore()
+    const first = store.createVerificationAbortController()
+    expect(first.signal.aborted).toBe(false)
+
+    store.createVerificationAbortController()
+    expect(first.signal.aborted).toBe(true)
+  })
+})

src/platform/missingMedia/missingMediaStore.ts

@@ -0,0 +1,154 @@
+import { defineStore } from 'pinia'
+import { computed, ref } from 'vue'
+
+// eslint-disable-next-line import-x/no-restricted-paths
+import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
+import { app } from '@/scripts/app'
+import type { MissingMediaCandidate } from '@/platform/missingMedia/types'
+import { getAncestorExecutionIds } from '@/types/nodeIdentification'
+import type { NodeExecutionId } from '@/types/nodeIdentification'
+import { getActiveGraphNodeIds } from '@/utils/graphTraversalUtil'
+import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
+
+/**
+ * Missing media error state.
+ * Separated from executionErrorStore to keep domain boundaries clean.
+ * The executionErrorStore composes from this store for aggregate error flags.
+ */
+export const useMissingMediaStore = defineStore('missingMedia', () => {
+  const canvasStore = useCanvasStore()
+
+  const missingMediaCandidates = ref<MissingMediaCandidate[] | null>(null)
+
+  const hasMissingMedia = computed(() => !!missingMediaCandidates.value?.length)
+
+  const missingMediaCount = computed(
+    () => missingMediaCandidates.value?.length ?? 0
+  )
+
+  const missingMediaNodeIds = computed(
+    () =>
+      new Set(missingMediaCandidates.value?.map((m) => String(m.nodeId)) ?? [])
+  )
+
+  /**
+   * Set of all execution ID prefixes derived from missing media node IDs,
+   * including the missing media nodes themselves.
+   */
+  const missingMediaAncestorExecutionIds = computed<Set<NodeExecutionId>>(
+    () => {
+      const ids = new Set<NodeExecutionId>()
+      for (const nodeId of missingMediaNodeIds.value) {
+        for (const id of getAncestorExecutionIds(nodeId)) {
+          ids.add(id)
+        }
+      }
+      return ids
+    }
+  )
+
+  const activeMissingMediaGraphIds = computed<Set<string>>(() => {
+    if (!app.rootGraph) return new Set()
+    return getActiveGraphNodeIds(
+      app.rootGraph,
+      canvasStore.currentGraph ?? app.rootGraph,
+      missingMediaAncestorExecutionIds.value
+    )
+  })
+
+  // Interaction state — persists across component re-mounts
+  const expandState = ref<Record<string, boolean>>({})
+  const uploadState = ref<
+    Record<string, { fileName: string; status: 'uploading' | 'uploaded' }>
+  >({})
+  /** Pending selection: value to apply on confirm. */
+  const pendingSelection = ref<Record<string, string>>({})
+
+  let _verificationAbortController: AbortController | null = null
+
+  function createVerificationAbortController(): AbortController {
+    _verificationAbortController?.abort()
+    _verificationAbortController = new AbortController()
+    return _verificationAbortController
+  }
+
+  function setMissingMedia(media: MissingMediaCandidate[]) {
+    missingMediaCandidates.value = media.length ? media : null
+  }
+
+  function hasMissingMediaOnNode(nodeLocatorId: string): boolean {
+    return missingMediaNodeIds.value.has(nodeLocatorId)
+  }
+
+  function isContainerWithMissingMedia(node: LGraphNode): boolean {
+    return activeMissingMediaGraphIds.value.has(String(node.id))
+  }
+
+  function clearInteractionStateForName(name: string) {
+    delete expandState.value[name]
+    delete uploadState.value[name]
+    delete pendingSelection.value[name]
+  }
+
+  function removeMissingMediaByName(name: string) {
+    if (!missingMediaCandidates.value) return
+    missingMediaCandidates.value = missingMediaCandidates.value.filter(
+      (m) => m.name !== name
+    )
+    clearInteractionStateForName(name)
+    if (!missingMediaCandidates.value.length)
+      missingMediaCandidates.value = null
+  }
+
+  function removeMissingMediaByWidget(nodeId: string, widgetName: string) {
+    if (!missingMediaCandidates.value) return
+    const removedNames = new Set(
+      missingMediaCandidates.value
+        .filter(
+          (m) => String(m.nodeId) === nodeId && m.widgetName === widgetName
+        )
+        .map((m) => m.name)
+    )
+    missingMediaCandidates.value = missingMediaCandidates.value.filter(
+      (m) => !(String(m.nodeId) === nodeId && m.widgetName === widgetName)
+    )
+    for (const name of removedNames) {
+      if (!missingMediaCandidates.value.some((m) => m.name === name)) {
+        clearInteractionStateForName(name)
+      }
+    }
+    if (!missingMediaCandidates.value.length)
+      missingMediaCandidates.value = null
+  }
+
+  function clearMissingMedia() {
+    _verificationAbortController?.abort()
+    _verificationAbortController = null
+    missingMediaCandidates.value = null
+    expandState.value = {}
+    uploadState.value = {}
+    pendingSelection.value = {}
+  }
+
+  return {
+    missingMediaCandidates,
+    hasMissingMedia,
+    missingMediaCount,
+    missingMediaNodeIds,
+    missingMediaAncestorExecutionIds,
+    activeMissingMediaGraphIds,
+
+    setMissingMedia,
+    removeMissingMediaByName,
+    removeMissingMediaByWidget,
+    clearMissingMedia,
+    createVerificationAbortController,
+
+    hasMissingMediaOnNode,
+    isContainerWithMissingMedia,
+
+    expandState,
+    uploadState,
+    pendingSelection
+  }
+})

src/platform/missingMedia/types.ts

@@ -0,0 +1,38 @@
+import type { NodeId } from '@/platform/workflow/validation/schemas/workflowSchema'
+
+export type MediaType = 'image' | 'video' | 'audio'
+
+/**
+ * A single (node, widget, media file) binding detected by the missing media pipeline.
+ * The same file name may appear multiple times across different nodes.
+ */
+export interface MissingMediaCandidate {
+  nodeId: NodeId
+  nodeType: string
+  widgetName: string
+  mediaType: MediaType
+  /** Display name (plain filename for OSS, asset hash for cloud). */
+  name: string
+  /**
+   * - `true`  — confirmed missing
+   * - `false` — confirmed present
+   * - `undefined` — pending async verification (cloud only)
+   */
+  isMissing: boolean | undefined
+}
+
+/** View model grouping multiple candidate references under a single file name. */
+export interface MissingMediaViewModel {
+  name: string
+  mediaType: MediaType
+  referencingNodes: Array<{
+    nodeId: NodeId
+    widgetName: string
+  }>
+}
+
+/** A group of missing media items sharing the same media type. */
+export interface MissingMediaGroup {
+  mediaType: MediaType
+  items: MissingMediaViewModel[]
+}

src/platform/missingModel/missingModelScan.ts

@@ -22,6 +22,7 @@ import {
   collectAllNodes,
   getExecutionIdByNode
 } from '@/utils/graphTraversalUtil'
+import { resolveComboValues } from '@/utils/litegraphUtil'
 
 function isComboWidget(widget: IBaseWidget): widget is IComboWidget {
   return widget.type === 'combo'
@@ -50,14 +51,6 @@ export function isModelFileName(name: string): boolean {
   return Array.from(MODEL_FILE_EXTENSIONS).some((ext) => lower.endsWith(ext))
 }
 
-function resolveComboOptions(widget: IComboWidget): string[] {
-  const values = widget.options.values
-  if (!values) return []
-  if (typeof values === 'function') return values(widget)
-  if (Array.isArray(values)) return values
-  return Object.keys(values)
-}
-
 /**
  * Scan COMBO and asset widgets on configured graph nodes for model-like values.
  * Must be called after `graph.configure()` so widget name/value mappings are accurate.
@@ -139,7 +132,7 @@ function scanComboWidget(
   if (!isModelFileName(value)) return null
 
   const nodeIsAssetSupported = isAssetSupported(node.type, widget.name)
-  const options = resolveComboOptions(widget)
+  const options = resolveComboValues(widget)
   const inOptions = options.includes(value)
 
   return {

src/renderer/extensions/vueNodes/widgets/composables/useImageUploadWidget.ts

@@ -11,8 +11,10 @@ import { isImageUploadInput } from '@/types/nodeDefAugmentation'
 import { createAnnotatedPath } from '@/utils/createAnnotatedPath'
 import { addToComboValues } from '@/utils/litegraphUtil'
 
-const ACCEPTED_IMAGE_TYPES = 'image/png,image/jpeg,image/webp'
-const ACCEPTED_VIDEO_TYPES = 'video/webm,video/mp4'
+import {
+  ACCEPTED_IMAGE_TYPES,
+  ACCEPTED_VIDEO_TYPES
+} from '@/utils/mediaUploadUtil'
 
 const isImageFile = (file: File) => file.type.startsWith('image/')
 const isVideoFile = (file: File) => file.type.startsWith('video/')

src/scripts/app.ts

@@ -92,6 +92,11 @@ import {
   verifyAssetSupportedCandidates
 } from '@/platform/missingModel/missingModelScan'
 import { useMissingModelStore } from '@/platform/missingModel/missingModelStore'
+import { useMissingMediaStore } from '@/platform/missingMedia/missingMediaStore'
+import {
+  scanAllMediaCandidates,
+  verifyCloudMediaCandidates
+} from '@/platform/missingMedia/missingMediaScan'
 import { assetService } from '@/platform/assets/services/assetService'
 import { useModelToNodeStore } from '@/stores/modelToNodeStore'
 
@@ -1137,6 +1142,7 @@ export class ComfyApp {
     useWorkflowService().beforeLoadNewGraph()
 
     useMissingModelStore().clearMissingModels()
+    useMissingMediaStore().clearMissingMedia()
 
     if (clean !== false) {
       // Reset canvas context before configuring a new graph so subgraph UI
@@ -1416,6 +1422,8 @@ export class ComfyApp {
         showMissingModels
       )
 
+      await this.runMissingMediaPipeline()
+
       if (!deferWarnings) {
         useWorkflowService().showPendingWarnings()
       }
@@ -1565,6 +1573,44 @@ export class ComfyApp {
     return { missingModels }
   }
 
+  private async runMissingMediaPipeline(): Promise<void> {
+    const missingMediaStore = useMissingMediaStore()
+    const candidates = scanAllMediaCandidates(this.rootGraph, isCloud)
+
+    if (!candidates.length) return
+
+    if (isCloud) {
+      const controller = missingMediaStore.createVerificationAbortController()
+      void verifyCloudMediaCandidates(candidates, controller.signal)
+        .then(() => {
+          if (controller.signal.aborted) return
+          const confirmed = candidates.filter((c) => c.isMissing === true)
+          if (confirmed.length) {
+            useExecutionErrorStore().surfaceMissingMedia(confirmed)
+          }
+        })
+        .catch((err) => {
+          console.warn(
+            '[Missing Media Pipeline] Asset verification failed:',
+            err
+          )
+          useToastStore().add({
+            severity: 'warn',
+            summary: st(
+              'toastMessages.missingMediaVerificationFailed',
+              'Failed to verify missing media. Some inputs may not be shown in the Errors tab.'
+            ),
+            life: 5000
+          })
+        })
+    } else {
+      const confirmed = candidates.filter((c) => c.isMissing === true)
+      if (confirmed.length) {
+        useExecutionErrorStore().surfaceMissingMedia(confirmed)
+      }
+    }
+  }
+
   async graphToPrompt(graph = this.rootGraph) {
     return graphToPrompt(graph, {
       sortNodes: useSettingStore().get('Comfy.Workflow.SortNodeIdOnSave')

src/stores/executionErrorStore.ts

@@ -4,7 +4,9 @@ import { computed, ref } from 'vue'
 import { useNodeErrorFlagSync } from '@/composables/graph/useNodeErrorFlagSync'
 import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
 import { useMissingModelStore } from '@/platform/missingModel/missingModelStore'
+import { useMissingMediaStore } from '@/platform/missingMedia/missingMediaStore'
 import type { MissingModelCandidate } from '@/platform/missingModel/types'
+import type { MissingMediaCandidate } from '@/platform/missingMedia/types'
 import { useSettingStore } from '@/platform/settings/settingStore'
 import { useWorkflowStore } from '@/platform/workflow/management/stores/workflowStore'
 import type { NodeId } from '@/platform/workflow/validation/schemas/workflowSchema'
@@ -34,6 +36,7 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
   const canvasStore = useCanvasStore()
   const missingModelStore = useMissingModelStore()
   const missingNodesStore = useMissingNodesErrorStore()
+  const missingMediaStore = useMissingMediaStore()
 
   const lastNodeErrors = ref<Record<NodeId, NodeError> | null>(null)
   const lastExecutionError = ref<ExecutionErrorWsMessage | null>(null)
@@ -157,6 +160,7 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
       options
     )
     missingModelStore.removeMissingModelByWidget(executionId, widgetName)
+    missingMediaStore.removeMissingMediaByWidget(executionId, widgetName)
   }
 
   /** Set missing models and open the error overlay if the Errors tab is enabled. */
@@ -170,6 +174,17 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
     }
   }
 
+  /** Set missing media and open the error overlay if the Errors tab is enabled. */
+  function surfaceMissingMedia(media: MissingMediaCandidate[]) {
+    missingMediaStore.setMissingMedia(media)
+    if (
+      media.length &&
+      useSettingStore().get('Comfy.RightSidePanel.ShowErrorsTab')
+    ) {
+      showErrorOverlay()
+    }
+  }
+
   const lastExecutionErrorNodeLocatorId = computed(() => {
     const err = lastExecutionError.value
     if (!err) return null
@@ -197,7 +212,8 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
       hasPromptError.value ||
       hasNodeError.value ||
       missingNodesStore.hasMissingNodes ||
-      missingModelStore.hasMissingModels
+      missingModelStore.hasMissingModels ||
+      missingMediaStore.hasMissingMedia
   )
 
   const allErrorExecutionIds = computed<string[]>(() => {
@@ -233,7 +249,8 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
       nodeErrorCount.value +
       executionErrorCount.value +
       missingNodesStore.missingNodeCount +
-      missingModelStore.missingModelCount
+      missingModelStore.missingModelCount +
+      missingMediaStore.missingMediaCount
   )
 
   /** Graph node IDs (as strings) that have errors in the current graph scope. */
@@ -326,7 +343,7 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
     return errorAncestorExecutionIds.value.has(execId)
   }
 
-  useNodeErrorFlagSync(lastNodeErrors, missingModelStore)
+  useNodeErrorFlagSync(lastNodeErrors, missingModelStore, missingMediaStore)
 
   return {
     // Raw state
@@ -360,6 +377,9 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
     // Missing model coordination (delegates to missingModelStore)
     surfaceMissingModels,
 
+    // Missing media coordination (delegates to missingMediaStore)
+    surfaceMissingMedia,
+
     // Lookup helpers
     getNodeErrors,
     slotHasError,

src/utils/litegraphUtil.ts

@@ -108,6 +108,14 @@ export function isAudioNode(node: LGraphNode | undefined): boolean {
   return !!node && node.previewMediaType === 'audio'
 }
 
+export function resolveComboValues(widget: IComboWidget): string[] {
+  const values = widget.options?.values
+  if (!values) return []
+  if (typeof values === 'function') return values(widget)
+  if (Array.isArray(values)) return values
+  return Object.keys(values)
+}
+
 export function addToComboValues(widget: IComboWidget, value: string) {
   if (!widget.options) widget.options = { values: [] }
   if (!widget.options.values) widget.options.values = []

src/utils/mediaUploadUtil.ts

@@ -0,0 +1,5 @@
+/** Accepted MIME types for the image upload file picker. */
+export const ACCEPTED_IMAGE_TYPES = 'image/png,image/jpeg,image/webp'
+
+/** Accepted MIME types for the video upload file picker. */
+export const ACCEPTED_VIDEO_TYPES = 'video/webm,video/mp4'