Use preview downscaling in fewer places (#9678)

Thumbnail downscaling is currently being used in more places than it
should be.
- Nodes which display images will display incorrect resolution
indicators
<img width="255" height="372" alt="image"
src="https://github.com/user-attachments/assets/674790b6-04c8-4db0-84c2-2fa2dbaf123d"
/> <img width="255" height="372" alt="image"
src="https://github.com/user-attachments/assets/1dbe751b-7462-4408-9236-9446b005f5fc"
/>

This is particularly confusing with output nodes, which claim the output
is not of the intended resolution
- The "Download Image" and "Open Image" context menu actions will
incorrectly download the downscaled thumbnail.
- The assets panel will incorrectly display the thumbnail resolution as
the resolution of the output
- The lightbox (zoom) of an image will incorrectly display a downscaled
thumbnail.

This PR is a quick workaround to staunch the major problems
- Nodes always display full previews.
- Resolution downscaling is applied on the assert card, not on the
assetItem itself
- Due to implementation, this means that asset cards will still
incorrectly show the resolution of the thumbnail instead of the size of
the full image.

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>

src/platform/assets/components/MediaAssetCard.vue

@@ -236,7 +236,7 @@ const adaptedAsset = computed(() => {
     name: asset.name,
     display_name: asset.display_name,
     kind: fileKind.value,
-    src: asset.preview_url || '',
+    src: asset.thumbnail_url || asset.preview_url || '',
     size: asset.size,
     tags: asset.tags || [],
     created_at: asset.created_at,

src/platform/assets/composables/media/assetMappers.ts

@@ -45,7 +45,8 @@ export function mapTaskOutputToAssetItem(
       ? new Date(taskItem.executionStartTimestamp).toISOString()
       : new Date().toISOString(),
     tags: ['output'],
-    preview_url: output.previewUrl,
+    thumbnail_url: output.previewUrl,
+    preview_url: output.url,
     user_metadata: metadata
   }
 }
@@ -63,6 +64,7 @@ export function mapInputFileToAssetItem(
   directory: 'input' | 'output' = 'input'
 ): AssetItem {
   const params = new URLSearchParams({ filename, type: directory })
+  const preview_url = api.apiURL(`/view?${params}`)
   appendCloudResParam(params, filename)
 
   return {
@@ -71,6 +73,7 @@ export function mapInputFileToAssetItem(
     size: 0,
     created_at: new Date().toISOString(),
     tags: [directory],
-    preview_url: api.apiURL(`/view?${params}`)
+    thumbnail_url: api.apiURL(`/view?${params}`),
+    preview_url
   }
 }

src/platform/assets/schemas/assetSchema.ts

@@ -11,6 +11,7 @@ const zAsset = z.object({
   preview_id: z.string().nullable().optional(),
   display_name: z.string().optional(),
   preview_url: z.string().optional(),
+  thumbnail_url: z.string().optional(),
   created_at: z.string().optional(),
   updated_at: z.string().optional(),
   is_immutable: z.boolean().optional(),

src/platform/assets/utils/outputAssetUtil.ts

@@ -73,7 +73,8 @@ function mapOutputsToAssetItems({
       size: 0,
       created_at: createdAtValue,
       tags: ['output'],
-      preview_url: output.previewUrl,
+      thumbnail_url: output.previewUrl,
+      preview_url: output.url,
       user_metadata: {
         jobId,
         nodeId: output.nodeId,