Phase 12~13 전체 구현: Pro+ 피처 6종 + 음성 대화 + RAG + OS 자동화

Phase 12:
- FileTranscriptionService: ffmpeg PCM 변환 + 30초 청크 순차 STT
- MeetingSummaryService: 자막 세션 → LLM 자동 요약 + DB summaryText
- DictationTemplateService: 필드별 음성 입력 상태 머신 + 프리셋 3개

Phase 13.1:
- VoiceConversationService: STT→Ollama /api/chat→TTS 대화 루프 (10턴)
- TTSPlaybackService: Windows SAPI 문장 단위 큐 재생
- LocalLLMService.chatStream: Ollama /api/chat 스트리밍

Phase 13.2:
- RAGService: Ollama 임베딩 + SQLite 벡터 + 코사인 유사도 검색
- KnowledgeBasePage: 문서 관리 + 질문/답변 UI
- PDF 파서: zlib FlateDecode 해제 + BT/ET 텍스트 추출

Phase 13.3:
- VoiceActionService: LLM JSON 액션 플랜 생성 + 실행
- 프리셋 6개 (크롬/메모장/탐색기/볼륨), 위험 명령 차단

공통: IPC ~70채널, 에러코드 780-878, i18n 100+키
버그픽스: 라이선스 로컬 키 우선, i18n featureLabel, DOM 중첩

src/shared/types.ts

@@ -432,7 +432,7 @@ export interface HistoryEntry {
   focusedApp: string | null
   focusedAppName: string | null
   focusedAppWindowTitle: string | null
-  mode: 'dictation' | 'translate' | 'command'
+  mode: 'dictation' | 'translate' | 'command' | 'caption' | 'file-transcription'
   status: 'completed' | 'cancelled' | 'error'
   errorCode: string | null
   audioLocalPath: string | null
@@ -447,6 +447,8 @@ export interface HistoryEntry {
   createdAt: number
   updatedAt: number
   appVersion: string
+  /** Phase 12.2: 회의록 요약 마크다운 */
+  summaryText: string | null
 }
 
 export interface HistoryQueryParams {
@@ -947,3 +949,316 @@ export interface TierComparison {
   pro: boolean | string
   proPlus: boolean | string
 }
+
+// ============================================================
+// Phase 12: File Transcription (12.1)
+// ============================================================
+
+export type FileTranscriptionState = 'idle' | 'converting' | 'transcribing' | 'completed' | 'error'
+
+export interface FileTranscriptionStartParams {
+  filePath: string
+  language?: string
+}
+
+export interface FileTranscriptionProgress {
+  jobId: string
+  currentChunk: number
+  totalChunks: number
+  percent: number
+  currentText: string
+}
+
+export interface FileTranscriptionSegment {
+  text: string
+  start: number
+  end: number
+  confidence: number
+}
+
+export interface FileTranscriptionResult {
+  jobId: string
+  filePath: string
+  fileName: string
+  fullText: string
+  segments: FileTranscriptionSegment[]
+  totalDurationSec: number
+  processingTimeMs: number
+}
+
+export interface FileTranscriptionStateInfo {
+  state: FileTranscriptionState
+  jobId: string | null
+  progress: FileTranscriptionProgress | null
+}
+
+// ============================================================
+// Phase 12: Meeting Summary (12.2)
+// ============================================================
+
+export interface MeetingSummaryResult {
+  historyId: string
+  summary: string
+  decisions: string[]
+  actionItems: string[]
+  rawMarkdown: string
+  generatedAt: number
+}
+
+export interface MeetingSummarizeParams {
+  historyId: string
+}
+
+export interface MeetingSummaryGetParams {
+  historyId: string
+}
+
+export interface MeetingSummaryExportParams {
+  historyId: string
+}
+
+export interface MeetingSummaryProgress {
+  historyId: string
+  status: 'generating' | 'done' | 'error'
+}
+
+// ============================================================
+// Phase 12: Dictation Templates (12.3)
+// ============================================================
+
+export interface TemplateField {
+  id: string
+  name: string
+  label: string
+  promptText: string
+  required: boolean
+  maxDurationSec: number
+}
+
+export interface DictationTemplate {
+  id: string
+  name: string
+  description: string
+  fields: TemplateField[]
+  outputFormat: string
+  isBuiltin: boolean
+  createdAt: number
+  updatedAt: number
+}
+
+export interface CreateTemplateParams {
+  name: string
+  description: string
+  fields: TemplateField[]
+  outputFormat: string
+}
+
+export interface UpdateTemplateParams {
+  id: string
+  name?: string
+  description?: string
+  fields?: TemplateField[]
+  outputFormat?: string
+}
+
+export interface DeleteTemplateParams {
+  id: string
+}
+
+export type TemplateSessionState =
+  | 'idle'
+  | 'field-prompting'
+  | 'field-recording'
+  | 'completing'
+
+export interface TemplateSessionInfo {
+  templateId: string
+  templateName: string
+  state: TemplateSessionState
+  currentFieldIndex: number
+  totalFields: number
+  currentField: TemplateField | null
+  fieldValues: Record<string, string>
+}
+
+export interface StartTemplateSessionParams {
+  templateId: string
+}
+
+export interface SetFieldValueParams {
+  fieldId: string
+  value: string
+}
+
+export interface TemplateFieldCompletedEvent {
+  fieldId: string
+  fieldName: string
+  value: string
+  nextField: TemplateField | null
+}
+
+export interface TemplateSessionCompletedEvent {
+  templateId: string
+  outputText: string
+  fieldValues: Record<string, string>
+}
+
+// ============================================================
+// Phase 13: Voice Conversation (13.1)
+// ============================================================
+
+export type ConversationState =
+  | 'idle'
+  | 'listening'
+  | 'thinking'
+  | 'speaking'
+
+export type ConversationRole = 'user' | 'assistant' | 'system'
+
+export interface ConversationMessage {
+  id: string
+  role: ConversationRole
+  content: string
+  timestamp: number
+}
+
+export interface ConversationSessionInfo {
+  state: ConversationState
+  messages: ConversationMessage[]
+  isActive: boolean
+}
+
+export interface ConversationSendParams {
+  text: string
+}
+
+export interface ConversationAssistantDelta {
+  messageId: string
+  delta: string
+  accumulated: string
+}
+
+export interface ConversationAssistantMessage {
+  messageId: string
+  content: string
+}
+
+export interface ConversationError {
+  message: string
+  phase: 'stt' | 'llm' | 'tts'
+}
+
+// ============================================================
+// Phase 13: Local RAG (13.2)
+// ============================================================
+
+export interface RAGDocument {
+  id: string
+  fileName: string
+  filePath: string
+  fileType: 'txt' | 'md' | 'pdf' | 'docx'
+  chunkCount: number
+  indexed: boolean
+  indexedAt: number | null
+  addedAt: number
+}
+
+export interface RAGChunk {
+  id: string
+  documentId: string
+  content: string
+  embedding: number[]
+  chunkIndex: number
+}
+
+export interface RAGQueryParams {
+  query: string
+  topK?: number
+}
+
+export interface RAGQueryResult {
+  query: string
+  results: Array<{
+    documentId: string
+    fileName: string
+    content: string
+    similarity: number
+  }>
+  /** LLM 답변 (컨텍스트 주입 후) */
+  answer: string
+}
+
+export interface RAGAddDocumentParams {
+  filePath: string
+}
+
+export interface RAGRemoveDocumentParams {
+  documentId: string
+}
+
+export interface RAGIndexProgress {
+  documentId: string
+  fileName: string
+  currentChunk: number
+  totalChunks: number
+  percent: number
+}
+
+export type RAGState = 'idle' | 'indexing' | 'querying'
+
+export interface RAGStateInfo {
+  state: RAGState
+  documentCount: number
+  totalChunks: number
+}
+
+// ============================================================
+// Phase 13: Voice Action / OS Automation (13.3)
+// ============================================================
+
+export type VoiceActionType =
+  | 'open_app'
+  | 'open_url'
+  | 'open_file'
+  | 'keyboard_shortcut'
+  | 'type_text'
+  | 'system_command'
+
+export interface VoiceActionPlan {
+  action: VoiceActionType
+  target: string
+  description: string
+  safe: boolean
+}
+
+export interface VoiceActionExecuteParams {
+  text: string
+}
+
+export interface VoiceActionPreset {
+  keywords: string[]
+  action: VoiceActionPlan
+}
+
+export interface VoiceActionHistoryEntry {
+  id: string
+  userText: string
+  plan: VoiceActionPlan
+  executed: boolean
+  timestamp: number
+}
+
+export interface VoiceActionPlannedEvent {
+  plan: VoiceActionPlan
+  userText: string
+}
+
+export interface VoiceActionExecutedEvent {
+  plan: VoiceActionPlan
+  success: boolean
+}
+
+export interface VoiceActionErrorEvent {
+  message: string
+  userText: string
+}