Copy generated stills into Input without loading the current frame.

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

server/api/library/stills/[id]/keep-input.post.ts

@@ -0,0 +1,10 @@
+import { assertFolderAccess, getStill, keepStillAsInput, libraryOwnerKey, publicLibrary } from '~/server/utils/library'
+
+export default defineEventHandler(async (event) => {
+  const id = String(getRouterParam(event, 'id') || '')
+  const owner = libraryOwnerKey(event)
+  const still = getStill(owner, id)
+  assertFolderAccess(event, still.folderId)
+  const saved = await keepStillAsInput(owner, id)
+  return { still: saved, ...publicLibrary(event) }
+})