Add Prompt Builder sequence section order.

Copied scene text and the scene editor follow a persisted sectionOrder, with legacy saves keeping the default style/settings/set/characters/prompt order.

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

server/api/prompt-sequences.post.ts

@@ -4,6 +4,7 @@ export default defineEventHandler(async (event) => {
   const { owner } = assertLibraryOwner(event)
   const body = await readBody<{
     name?: string
+    sectionOrder?: unknown
     characters?: unknown
     sets?: unknown
     scenes?: unknown
@@ -11,6 +12,7 @@ export default defineEventHandler(async (event) => {
   }>(event).catch(() => ({}))
   const sequence = await savePromptSequence(owner, {
     name: body?.name || '',
+    sectionOrder: body?.sectionOrder,
     characters: body?.characters,
     sets: body?.sets,
     scenes: body?.scenes,