feat(voice): add async selectable summaries

pages/feedback/voice-state.ts

@@ -1,12 +1,12 @@
 import type { FeedbackSession, VoiceAudioSegment, VoiceLesson } from '../../utils/types'
 
-export type VoicePrimaryAction = 'save' | 'retry' | 'processing' | 'generate'
+export type VoicePrimaryAction = 'save' | 'retry' | 'processing'
 
 export function getVoicePrimaryAction(session: FeedbackSession | null): VoicePrimaryAction {
   if (!session || session.lessonCount === 0) return 'save'
   if (session.failedSegmentCount > 0) return 'retry'
   if (session.processingSegmentCount > 0) return 'processing'
-  return session.needsGeneration ? 'generate' : 'save'
+  return 'save'
 }
 
 export function getVoicePrimaryActionText(
@@ -15,7 +15,6 @@ export function getVoicePrimaryActionText(
 ): string {
   if (action === 'retry') return `重试转录（${failedSegmentCount}）`
   if (action === 'processing') return '转录中'
-  if (action === 'generate') return '生成反馈'
   return '保存反馈'
 }