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>

tests/prompt-sequences.test.mjs

@@ -26,6 +26,8 @@ const {
   emptyFraming,
   cloneSceneForNext,
   normalizePromptSequence,
+  normalizeSectionOrder,
+  DEFAULT_PROMPT_SEQUENCE_SECTION_ORDER,
   ensureSceneStatesForCharacters
 } = await import(pathToFileURL(tmp).href)
 unlinkSync(tmp)
@@ -204,3 +206,83 @@ test('ensureSceneStatesForCharacters turns new character on only for current sce
   assert.equal(scenes[0].characterStates.find(s => s.characterId === b.id).on, false)
   assert.equal(scenes[1].characterStates.find(s => s.characterId === b.id).on, true)
 })
+
+test('sectionOrder settings then prompt then characters; empty style and set omitted', () => {
+  const ada = {
+    ...emptyCharacter(),
+    id: 'c1',
+    name: 'Ada',
+    description: 'tall',
+    outfits: []
+  }
+  const set = {
+    ...emptySet(),
+    id: 's1',
+    name: 'Courtyard',
+    framings: [{ ...emptyFraming('wide'), id: 'f1', text: 'open yard' }]
+  }
+  const scene = {
+    style: '',
+    settings: 'soft light',
+    setStates: [{ setId: 's1', on: true, framingId: null }],
+    characterStates: [{ characterId: 'c1', on: true, outfitId: null }],
+    prompt: 'looks up'
+  }
+  const order = ['settings', 'prompt', 'characters']
+  const text = assembleSceneText(scene, [ada], [set], order)
+  assert.equal(text, 'soft light\n\nlooks up\n\nAda: tall')
+  assert.ok(!text.includes('open yard'))
+  assert.ok(!text.includes('Courtyard'))
+  assert.ok(!text.includes('wide'))
+})
+
+test('legacy sequence without sectionOrder keeps default order and \\n\\n\\n join', () => {
+  const legacy = normalizePromptSequence({
+    id: 'seq1',
+    name: 'Old order',
+    characters: [{ id: 'c1', name: 'Ada', description: 'tall', outfits: [] }],
+    sets: [{
+      id: 's1',
+      name: 'Hall',
+      framings: [{ id: 'f1', label: 'wide', text: 'stone hall' }]
+    }],
+    scenes: [
+      {
+        id: 'sc1',
+        title: 'One',
+        style: 'oil',
+        settings: 'day',
+        setStates: [{ setId: 's1', on: true, framingId: 'f1' }],
+        characterStates: [{ characterId: 'c1', on: true, outfitId: null }],
+        prompt: 'walk'
+      },
+      {
+        id: 'sc2',
+        title: 'Two',
+        style: 'ink',
+        settings: '',
+        setStates: [{ setId: 's1', on: false, framingId: 'f1' }],
+        characterStates: [{ characterId: 'c1', on: true, outfitId: null }],
+        prompt: 'stop'
+      }
+    ],
+    createdAt: 1,
+    updatedAt: 1
+  })
+  assert.deepEqual(legacy.sectionOrder, [...DEFAULT_PROMPT_SEQUENCE_SECTION_ORDER])
+  assert.deepEqual(normalizeSectionOrder(undefined), [...DEFAULT_PROMPT_SEQUENCE_SECTION_ORDER])
+  assert.deepEqual(normalizeSectionOrder(['prompt', 'prompt', 'bogus', 'settings']), [
+    'prompt',
+    'settings',
+    'style',
+    'set',
+    'characters'
+  ])
+  const full = assembleSequenceText(legacy)
+  assert.equal(
+    full,
+    'oil\n\nday\n\nstone hall\n\nAda: tall\n\nwalk\n\n\nink\n\nAda: tall\n\nstop'
+  )
+  assert.ok(!full.includes('Hall'))
+  assert.ok(!full.includes('wide'))
+})