Serve the bench before the catalog and never await ffmpeg on /thumb.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/api/library/stills/[id].get.ts

@@ -1,7 +1,7 @@
 import { existsSync, createReadStream } from 'node:fs'
-import { fileEtag, stillPath, stillThumbPath, sniffImageType } from '~/server/utils/library'
+import { fileEtag, stillPath, existingStillThumbPath, stillThumbPath, sniffImageType } from '~/server/utils/library'
 
-export default defineEventHandler(async (event) => {
+export default defineEventHandler((event) => {
   const { owner } = assertLibraryOwner(event)
   const id = String(getRouterParam(event, 'id') || '')
   const still = getStill(owner, id)
@@ -9,28 +9,36 @@ export default defineEventHandler(async (event) => {
   const wantThumb = String(getQuery(event).thumb || '') === '1'
   const original = stillPath(owner, still.id)
 
-  let path = original
   if (wantThumb) {
-    path = await stillThumbPath(owner, id)
-    // Never fall back to the archive PNG/JPEG for ?thumb=1
-    if (!path || path === original || !existsSync(path)) {
-      throw createError({ statusCode: 404, statusMessage: 'Thumbnail not found' })
+    const path = existingStillThumbPath(owner, id)
+    if (path && path !== original && existsSync(path)) {
+      const etag = fileEtag(path)
+      setHeader(event, 'ETag', etag)
+      setHeader(event, 'Cache-Control', 'public, max-age=86400')
+      if (getHeader(event, 'if-none-match') === etag) {
+        setResponseStatus(event, 304)
+        return null
+      }
+      setHeader(event, 'Content-Type', 'image/jpeg')
+      return sendStream(event, createReadStream(path))
     }
-  } else if (!existsSync(path)) {
+    void stillThumbPath(owner, id).catch(() => null)
+    setHeader(event, 'Cache-Control', 'no-store')
+    setResponseStatus(event, 204)
+    return null
+  }
+
+  if (!existsSync(original)) {
     throw createError({ statusCode: 404, statusMessage: 'Image file is missing' })
   }
 
-  const etag = fileEtag(path)
+  const etag = fileEtag(original)
   setHeader(event, 'ETag', etag)
-  setHeader(
-    event,
-    'Cache-Control',
-    wantThumb ? 'public, max-age=86400' : 'private, max-age=3600'
-  )
+  setHeader(event, 'Cache-Control', 'private, max-age=3600')
   if (getHeader(event, 'if-none-match') === etag) {
     setResponseStatus(event, 304)
     return null
   }
-  setHeader(event, 'Content-Type', wantThumb ? 'image/jpeg' : sniffImageType(path))
-  return sendStream(event, createReadStream(path))
+  setHeader(event, 'Content-Type', sniffImageType(original))
+  return sendStream(event, createReadStream(original))
 })