Split prompts into pre/prompt/post and tidy the AIGen video form.

Keep wrappers off the library mid-prompt so Use as input and Extend restore the same split, send stills to xAIGen as hidden inputs, and stop the two-column library from growing with the list.

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

server/api/v2/generate.post.ts

@@ -136,6 +136,8 @@ export default defineEventHandler(async (event) => {
     mode === 'generate' ? 't2i' : mode === 'refine' ? 'refine' : 'scene'
   )
   const prompt = String(fields.prompt || '').trim()
+  const promptPre = String(fields.promptPre || '').trim()
+  const promptPost = String(fields.promptPost || '').trim()
   const extraPasses = parsePasses(fields.passes)
   const passMode = parseImagePassMode(fields.passMode)
   const aspect = parseImageAspect(fields.aspect)
@@ -305,6 +307,8 @@ export default defineEventHandler(async (event) => {
     kind: 'edit',
     payload: {
       prompt,
+      promptPre: promptPre || undefined,
+      promptPost: promptPost || undefined,
       name: clipName,
       folderId,
       aspect: mode === 'generate' ? generateSize.aspect : aspect,