Phase 15 구현: Auto Polish + AI 채팅 + 마인드맵 + 공유

- Auto Polish: LLM으로 전사 다듬기 (필러 제거, 문장 교정)
- AI 채팅: 회의 전사 기반 Q&A (LocalLLMService.chatStream 활용, 스트리밍)
- 마인드맵: 빌트인 템플릿 추가 (마크다운 계층 트리)
- 공유: 클립보드 복사 메뉴 추가
- MeetingChatPanel UI (접기/펼치기, 스트리밍 인디케이터)
- TranscriptTab에 AI 다듬기 버튼 추가
- 12개 locale i18n 키 추가

CLAUDE.md

@@ -32,7 +32,7 @@ npm run typecheck  # tsc --noEmit
 - 녹음 UI: 9개 웨이브 바, cos 분포, 100ms
 
 ## 현재 상태
-Phase 1~14 전체 완료 + 랜딩 페이지(site/).
+Phase 1~14.5 전체 완료 + 랜딩 페이지(site/).
 차단 이슈: @nut-tree-fork/nut-js 포크 사용
 
 ## 설계 문서 (구현 시 Read 도구로 참조)
@@ -50,6 +50,7 @@ Phase10+: MemoService, VoiceCommandService, ScreenContextService, ChainService,
 Phase12+: FileTranscriptionService, MeetingSummaryService, DictationTemplateService
 Phase13+: VoiceConversationService, RAGService, VoiceActionService
 Phase14: MeetingModeService
+Phase14.5: MeetingDocTemplateService + 다중 문서 생성/편집/내보내기
 
 ## DS 컴포넌트 (src/renderer/components/ds/)
 CrtDisplay, InstrumentPanel, Led, PhysicalButton, MetalCard,

docs/phases/phase-15-meeting-pro.md

@@ -0,0 +1,205 @@
+# Phase 15: 회의 모드 Pro — Auto Polish + AI 채팅 + 마인드맵 + 공유
+
+> Phase 14.5 기반 확장: AI 전사 다듬기, 회의록 기반 AI 채팅, 마인드맵 생성, 공유 링크
+
+---
+
+## 1. 개요
+
+### 1.1 기능 4종
+
+| 기능 | 설명 | 난이도 |
+|------|------|--------|
+| **Auto Polish** | 전사 텍스트 AI 다듬기 (필러 제거, 가독성 향상) | 소 |
+| **마인드맵** | 전사 내용에서 AI 마인드맵 생성 (마크다운 트리) | 소 |
+| **AI 채팅** | 회의 전사 기반 Q&A 채팅 | 중 |
+| **공유** | 마크다운 → 클립보드 복사 + 파일 공유 | 소 |
+
+**화자 구분**: sidecar에 pyannote-audio 추가 필요 → TODO로 유지
+
+---
+
+## 2. Auto Polish
+
+### 2.1 동작 방식
+1. Transcript 탭에서 [AI 다듬기] 버튼 클릭
+2. rawTranscript를 LLM에 전달 (refine 프롬프트)
+3. 결과를 editedTranscript에 저장
+4. "원본/AI 다듬기본" 토글 가능
+
+### 2.2 IPC
+```
+MEETING_MODE.POLISH_TRANSCRIPT: 'meetingMode:polishTranscript'
+```
+
+### 2.3 서비스 메서드
+```typescript
+async polishTranscript(sessionId: string): Promise<string> {
+  // rawTranscript → LLM refine → editedTranscript 저장 → 반환
+}
+```
+
+### 2.4 UI
+TranscriptTab에 [AI 다듬기] PhysicalButton 추가. 처리 중 LinearProgress.
+
+---
+
+## 3. 마인드맵
+
+### 3.1 동작 방식
+MeetingDocTemplateType에 'mindmap' 추가. 빌트인 템플릿으로 등록.
+LLM이 마크다운 트리 구조로 마인드맵 생성. DocumentTab에서 렌더링.
+
+### 3.2 프롬프트
+```
+전사록을 분석하여 마인드맵을 작성하세요.
+마크다운 계층 구조를 사용하세요:
+# 중심 주제
+## 주요 주제 1
+  - 세부 항목 A
+  - 세부 항목 B
+## 주요 주제 2
+  - 세부 항목 C
+```
+
+### 3.3 DB 변경
+`meetingDocuments.templateType` enum에 'mindmap' 추가.
+`meetingSessions.templateType` (schema.ts) enum에 'mindmap' 추가.
+
+---
+
+## 4. AI 채팅
+
+### 4.1 동작 방식
+1. 상세 페이지 하단에 채팅 바 (고정, 탭과 별개)
+2. 사용자가 질문 입력 → 전사+문서를 컨텍스트로 LLM 질문
+3. 스트리밍 응답 표시
+4. 대화 히스토리는 메모리에만 유지 (DB 저장 안 함)
+
+### 4.2 IPC
+```
+MEETING_CHAT: {
+  SEND: 'meetingChat:send',
+  CANCEL: 'meetingChat:cancel',
+  CLEAR: 'meetingChat:clear',
+  // Main → Renderer
+  DELTA: 'meetingChat:delta',
+  MESSAGE: 'meetingChat:message',
+  ERROR: 'meetingChat:error',
+}
+```
+
+### 4.3 서비스
+MeetingModeService에 채팅 메서드 추가 (별도 서비스 불필요):
+```typescript
+async chatWithMeeting(sessionId: string, userMessage: string): Promise<void>
+cancelMeetingChat(): void
+clearMeetingChatHistory(): void
+```
+
+LocalLLMService.chatStream() 활용. 시스템 프롬프트에 전사 내용 포함.
+
+### 4.4 UI
+MeetingDetailTabs 하단에 고정 채팅 바:
+```
+┌──────────────────────────────────────┐
+│ [탭 콘텐츠...]                        │
+├──────────────────────────────────────┤
+│ 🤖 AI: 예산은 5000만원으로 확정...    │
+│ 👤 다음 회의 일정은?                   │
+│ 🤖 AI: 다음 주 수요일...              │
+│ ┌──────────────────────────┐ [Send]  │
+│ │ 질문을 입력하세요...       │        │
+│ └──────────────────────────┘        │
+└──────────────────────────────────────┘
+```
+
+### 4.5 타입
+```typescript
+interface MeetingChatMessage {
+  role: 'user' | 'assistant'
+  content: string
+  timestamp: number
+}
+
+interface MeetingChatSendParams {
+  sessionId: string
+  message: string
+}
+
+interface MeetingChatDelta {
+  token: string
+}
+```
+
+---
+
+## 5. 공유
+
+### 5.1 동작 방식
+1. 클립보드 복사: 문서/전사 마크다운을 클립보드에 복사
+2. 파일 공유: 기존 내보내기(MD/PDF/TXT/DOCX)로 파일 저장
+3. 향후: 웹 서비스 연동 (TODO)
+
+### 5.2 UI
+ExportMenu에 "클립보드 복사" 항목 추가.
+
+---
+
+## 6. 에러 코드
+```typescript
+MeetingPolishFailed = 893,
+MeetingChatFailed = 894,
+```
+
+---
+
+## 7. i18n 키
+```json
+"meeting.polish": "AI 다듬기",
+"meeting.polishing": "AI가 전사를 다듬고 있습니다...",
+"meeting.polished": "AI 다듬기 완료",
+"meeting.mindmapTemplate": "마인드맵",
+"meeting.chat": "AI 채팅",
+"meeting.chatPlaceholder": "회의 내용에 대해 질문하세요...",
+"meeting.chatSend": "전송",
+"meeting.chatClear": "대화 초기화",
+"meeting.copyToClipboard": "클립보드 복사",
+"meeting.copied": "복사됨"
+```
+
+---
+
+## 8. 구현 순서
+
+### Step A: 기반 (타입 + IPC + 에러)
+### Step B: Auto Polish (서비스 + IPC + UI)
+### Step C: 마인드맵 (템플릿 추가 + DB enum)
+### Step D: AI 채팅 (서비스 + IPC + UI)
+### Step E: 공유 (클립보드 복사)
+### Step F: i18n + 검증
+
+---
+
+## 파일 목록
+
+### 신규
+| 파일 | 설명 |
+|------|------|
+| `src/renderer/components/meeting/MeetingChatPanel.tsx` | AI 채팅 UI |
+
+### 수정
+| 파일 | 변경 |
+|------|------|
+| `src/shared/types.ts` | MeetingChatMessage, MeetingChatSendParams, MeetingChatDelta, MeetingDocTemplateType에 mindmap 추가 |
+| `src/shared/ipc-channels.ts` | MEETING_MODE.POLISH_TRANSCRIPT + MEETING_CHAT 그룹 |
+| `src/shared/errors.ts` | 893-894 |
+| `src/main/db/schema.ts` | meetingDocuments templateType enum에 mindmap |
+| `src/main/services/MeetingModeService.ts` | polishTranscript, chatWithMeeting, cancelMeetingChat, clearMeetingChatHistory |
+| `src/main/services/MeetingDocTemplateService.ts` | 빌트인 마인드맵 템플릿 |
+| `src/main/ipc/meeting-mode-handlers.ts` | 4개 핸들러 추가 |
+| `src/preload/index.ts` | meetingChat 그룹 + polishTranscript |
+| `src/renderer/components/meeting/TranscriptTab.tsx` | AI 다듬기 버튼 |
+| `src/renderer/components/meeting/MeetingDetailTabs.tsx` | 하단 채팅 패널 |
+| `src/renderer/components/meeting/ExportMenu.tsx` | 클립보드 복사 |
+| `src/renderer/i18n/*.json` | 12개 locale |

src/main/db/schema.ts

@@ -210,7 +210,7 @@ export const meetingDocuments = sqliteTable(
     id: text('id').primaryKey(),
     sessionId: text('session_id').notNull(),
     templateType: text('template_type', {
-      enum: ['minutes', 'report', 'idea-note', 'custom'],
+      enum: ['minutes', 'report', 'idea-note', 'custom', 'mindmap'],
     }).notNull(),
     title: text('title').notNull(),
     content: text('content').notNull().default(''),

src/main/ipc/meeting-mode-handlers.ts

@@ -14,6 +14,7 @@ import type {
   MeetingExportParams,
   MeetingGenerateDocParams,
   MeetingExportFormat,
+  MeetingChatSendParams,
 } from '@shared/types'
 
 const logger = getLogger('meeting-mode-handlers')
@@ -198,5 +199,51 @@ export function registerMeetingModeHandlers(): void {
     }
   })
 
+  // ── Phase 15 핸들러 ──
+
+  ipcMain.handle(ch.POLISH_TRANSCRIPT, async (_event, params: { sessionId: string }) => {
+    try {
+      const result = await getMeetingModeService().polishTranscript(params.sessionId)
+      return ipcSuccess(result)
+    } catch (err) {
+      logger.error(`polishTranscript 실패: ${err instanceof Error ? err.message : String(err)}`)
+      return ipcError(
+        ErrorCode.MeetingPolishFailed,
+        err instanceof Error ? err.message : String(err),
+      )
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.MEETING_CHAT.SEND, async (_event, params: MeetingChatSendParams) => {
+    try {
+      await getMeetingModeService().chatWithMeeting(params.sessionId, params.message)
+      return ipcSuccess(undefined)
+    } catch (err) {
+      logger.error(`meetingChat:send 실패: ${err instanceof Error ? err.message : String(err)}`)
+      return ipcError(
+        ErrorCode.MeetingChatFailed,
+        err instanceof Error ? err.message : String(err),
+      )
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.MEETING_CHAT.CANCEL, () => {
+    try {
+      getMeetingModeService().cancelMeetingChat()
+      return ipcSuccess(undefined)
+    } catch (err) {
+      return ipcError(ErrorCode.UnknownError, err instanceof Error ? err.message : String(err))
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.MEETING_CHAT.CLEAR, () => {
+    try {
+      getMeetingModeService().clearMeetingChatHistory()
+      return ipcSuccess(undefined)
+    } catch (err) {
+      return ipcError(ErrorCode.UnknownError, err instanceof Error ? err.message : String(err))
+    }
+  })
+
   logger.info('Meeting Mode IPC handlers registered')
 }

src/main/services/MeetingDocTemplateService.ts

@@ -118,6 +118,32 @@ const BUILTIN_TEMPLATES: MeetingDocTemplate[] = [
     createdAt: Date.now(),
     updatedAt: Date.now(),
   },
+  {
+    id: 'builtin-mindmap',
+    name: '마인드맵',
+    description: '전사 내용의 핵심 구조를 시각적 마인드맵으로 정리',
+    templateType: 'mindmap' as MeetingDocTemplateType,
+    systemPrompt: `전사록을 분석하여 마인드맵을 마크다운 계층 구조로 작성하세요.
+
+# 중심 주제 (회의의 핵심 주제)
+## 주요 주제 1
+  - 세부 항목 A
+  - 세부 항목 B
+    - 하위 항목
+## 주요 주제 2
+  - 세부 항목 C
+## 결론 및 다음 단계
+  - 액션 아이템
+
+규칙:
+- 계층은 최대 4단계까지
+- 각 항목은 간결하게 (한 줄)
+- 전사록에 없는 내용 추가 금지
+- 한국어로 작성`,
+    isBuiltin: true,
+    createdAt: Date.now(),
+    updatedAt: Date.now(),
+  },
 ]
 
 interface MeetingDocTemplateStoreSchema {

src/main/services/MeetingModeService.ts

@@ -65,6 +65,10 @@ class MeetingModeService extends EventEmitter {
   /** CaptionService session-saved 방지 플래그 */
   private _meetingModeActive = false
 
+  // Phase 15: Meeting AI Chat
+  private _chatHistory: Array<{ role: 'user' | 'assistant'; content: string }> = []
+  private _chatAbortController: AbortController | null = null
+
   // ── 공개 접근자 ──
 
   getState(): MeetingModeState {
@@ -823,6 +827,99 @@ class MeetingModeService extends EventEmitter {
     }
   }
 
+  // ── Phase 15: Auto Polish ──
+
+  async polishTranscript(sessionId: string): Promise<string> {
+    const db = getDatabase()
+    const row = db.select().from(meetingSessions).where(eq(meetingSessions.id, sessionId)).get()
+    if (!row) throw new D3ROError(ErrorCode.MeetingSessionNotFound, `세션 없음: ${sessionId}`)
+
+    const transcript = row.rawTranscript
+    if (!transcript) throw new D3ROError(ErrorCode.MeetingPolishFailed, '전사 텍스트가 없습니다')
+
+    const { getLocalLLMService } = await import('./LocalLLMService')
+    const llm = getLocalLLMService()
+    const result = await llm.generate(transcript, {
+      systemPrompt: '다음 음성 전사 텍스트를 다듬어주세요. 필러 단어(음, 어, 그, 아 등)를 제거하고, 문장 구조를 자연스럽게 교정하되, 원래 의미와 내용은 절대 변경하지 마세요. 타임스탬프 형식 [MM:SS]은 그대로 유지하세요.',
+      temperature: 0.3,
+    })
+
+    db.update(meetingSessions).set({
+      editedTranscript: result.text,
+      updatedAt: Date.now(),
+    }).where(eq(meetingSessions.id, sessionId)).run()
+
+    logger.info(`Auto Polish 완료: sessionId=${sessionId}`)
+    return result.text
+  }
+
+  // ── Phase 15: Meeting AI Chat ──
+
+  async chatWithMeeting(sessionId: string, userMessage: string): Promise<void> {
+    const db = getDatabase()
+    const row = db.select().from(meetingSessions).where(eq(meetingSessions.id, sessionId)).get()
+    if (!row) throw new D3ROError(ErrorCode.MeetingSessionNotFound, `세션 없음: ${sessionId}`)
+
+    const transcript = row.editedTranscript ?? row.rawTranscript ?? ''
+
+    const systemPrompt = `당신은 회의 내용을 분석하는 AI 어시스턴트입니다.
+아래 회의 전사 내용을 참고하여 사용자의 질문에 정확하게 답변하세요.
+전사 내용에 없는 것은 "전사 내용에서 확인되지 않습니다"라고 답하세요.
+
+## 회의 전사
+${transcript}`
+
+    this._chatHistory.push({ role: 'user', content: userMessage })
+
+    const { getLocalLLMService } = await import('./LocalLLMService')
+    const llm = getLocalLLMService()
+
+    const messages = [
+      { role: 'system' as const, content: systemPrompt },
+      ...this._chatHistory,
+    ]
+
+    let fullResponse = ''
+    this._chatAbortController = new AbortController()
+    const signal = this._chatAbortController.signal
+
+    try {
+      const generator = llm.chatStream(messages, { temperature: 0.5 })
+
+      for await (const token of generator) {
+        if (signal.aborted) break
+        fullResponse += token
+        this._sendToRenderer(IPC_CHANNELS.MEETING_CHAT.DELTA, { token })
+      }
+
+      this._chatHistory.push({ role: 'assistant', content: fullResponse })
+      this._sendToRenderer(IPC_CHANNELS.MEETING_CHAT.MESSAGE, {
+        role: 'assistant',
+        content: fullResponse,
+        timestamp: Date.now(),
+      })
+    } catch (err) {
+      if ((err as Error).name !== 'AbortError') {
+        this._sendToRenderer(IPC_CHANNELS.MEETING_CHAT.ERROR, {
+          message: err instanceof Error ? err.message : String(err),
+        })
+      }
+    } finally {
+      this._chatAbortController = null
+    }
+  }
+
+  cancelMeetingChat(): void {
+    if (this._chatAbortController) {
+      this._chatAbortController.abort()
+      this._chatAbortController = null
+    }
+  }
+
+  clearMeetingChatHistory(): void {
+    this._chatHistory = []
+  }
+
   private _buildPdfHtml(session: MeetingSessionDetail): string {
     const durationMin = session.durationMs ? Math.round(session.durationMs / 60000) : 0
     const minutesHtml = session.minutesMarkdown

src/preload/index.ts

@@ -162,6 +162,9 @@ import type {
   CreateMeetingDocTemplateParams,
   UpdateMeetingDocTemplateParams,
   DeleteMeetingDocTemplateParams,
+  MeetingChatMessage,
+  MeetingChatSendParams,
+  MeetingChatDelta,
 } from '@shared/types'
 import { Feature } from '@shared/types'
 import type { IPCResult } from '@shared/errors'
@@ -635,6 +638,25 @@ const electronAPI = {
       invoke<void>(IPC_CHANNELS.MEETING_MODE.EDIT_SEGMENT, params),
     onDocGeneratingProgress: (cb: (e: MeetingDocGeneratingProgress) => void): Unsubscribe =>
       on(IPC_CHANNELS.MEETING_MODE.DOC_GENERATING_PROGRESS, cb),
+    // Phase 15
+    polishTranscript: (params: { sessionId: string }) =>
+      invoke<string>(IPC_CHANNELS.MEETING_MODE.POLISH_TRANSCRIPT, params),
+  },
+
+  // ── Meeting Chat (Phase 15) ───────────────────────────
+  meetingChat: {
+    send: (params: MeetingChatSendParams) =>
+      invoke<void>(IPC_CHANNELS.MEETING_CHAT.SEND, params),
+    cancel: () =>
+      invoke<void>(IPC_CHANNELS.MEETING_CHAT.CANCEL),
+    clear: () =>
+      invoke<void>(IPC_CHANNELS.MEETING_CHAT.CLEAR),
+    onDelta: (cb: (e: MeetingChatDelta) => void): Unsubscribe =>
+      on(IPC_CHANNELS.MEETING_CHAT.DELTA, cb),
+    onMessage: (cb: (e: MeetingChatMessage) => void): Unsubscribe =>
+      on(IPC_CHANNELS.MEETING_CHAT.MESSAGE, cb),
+    onError: (cb: (e: { message: string }) => void): Unsubscribe =>
+      on(IPC_CHANNELS.MEETING_CHAT.ERROR, cb),
   },
 
   // ── Meeting Doc Templates (Phase 14.5) ───────────────

src/renderer/components/meeting/ExportMenu.tsx

@@ -11,6 +11,7 @@ import type { MeetingExportFormat } from '@shared/types'
 
 interface ExportMenuProps {
   onExport: (format: MeetingExportFormat) => void
+  onCopyToClipboard?: () => void
 }
 
 interface FormatItem {
@@ -18,7 +19,7 @@ interface FormatItem {
   label: string
 }
 
-export function ExportMenu({ onExport }: ExportMenuProps): React.ReactElement {
+export function ExportMenu({ onExport, onCopyToClipboard }: ExportMenuProps): React.ReactElement {
   const { t } = useI18n()
   const [anchorEl, setAnchorEl] = useState<HTMLElement | null>(null)
   const open = Boolean(anchorEl)
@@ -90,6 +91,22 @@ export function ExportMenu({ onExport }: ExportMenuProps): React.ReactElement {
             {label}
           </MenuItem>
         ))}
+        {onCopyToClipboard && (
+          <MenuItem
+            onClick={() => { onCopyToClipboard(); handleClose() }}
+            sx={{
+              fontFamily: d3roFontMono,
+              fontSize: d3roTypo.compact.size,
+              color: d3roPalette.text.primary,
+              '&:hover': {
+                bgcolor: d3roPalette.bg.cardHover,
+                color: d3roPalette.accent.amber,
+              },
+            }}
+          >
+            {t('meeting.copyToClipboard')}
+          </MenuItem>
+        )}
       </Menu>
     </>
   )

src/renderer/components/meeting/MeetingChatPanel.tsx

@@ -0,0 +1,325 @@
+// src/renderer/components/meeting/MeetingChatPanel.tsx
+// Phase 15: 회의 상세 페이지 하단 AI 채팅 패널
+
+import { useState, useCallback, useEffect, useRef } from 'react'
+import { Box, TextField, IconButton, LinearProgress, Tooltip } from '@mui/material'
+import SendIcon from '@mui/icons-material/Send'
+import DeleteSweepIcon from '@mui/icons-material/DeleteSweep'
+import ExpandLessIcon from '@mui/icons-material/ExpandLess'
+import ExpandMoreIcon from '@mui/icons-material/ExpandMore'
+import { PhosphorText } from '../ds/PhosphorText'
+import { PhysicalButton } from '../ds/PhysicalButton'
+import { d3roPalette, d3roFontMono, d3roTypo, d3roShadow } from '../../theme'
+import { useI18n } from '../../i18n'
+import type { MeetingChatMessage } from '@shared/types'
+
+interface MeetingChatPanelProps {
+  sessionId: string
+}
+
+const COLLAPSED_HEIGHT = 40
+const EXPANDED_HEIGHT = 240
+
+// 타이핑 인디케이터 점 3개 애니메이션
+function TypingIndicator(): React.ReactElement {
+  return (
+    <Box sx={{ display: 'flex', alignItems: 'center', gap: '3px', px: 1, py: 0.5 }}>
+      {[0, 1, 2].map((i) => (
+        <Box
+          key={i}
+          sx={{
+            width: 5,
+            height: 5,
+            borderRadius: '50%',
+            bgcolor: d3roPalette.accent.amber,
+            animation: 'typing-dot 1.2s infinite',
+            animationDelay: `${i * 0.2}s`,
+            '@keyframes typing-dot': {
+              '0%, 80%, 100%': { opacity: 0.3, transform: 'scale(0.8)' },
+              '40%': { opacity: 1, transform: 'scale(1)' },
+            },
+          }}
+        />
+      ))}
+    </Box>
+  )
+}
+
+export function MeetingChatPanel({ sessionId }: MeetingChatPanelProps): React.ReactElement {
+  const { t } = useI18n()
+  const [messages, setMessages] = useState<MeetingChatMessage[]>([])
+  const [inputValue, setInputValue] = useState('')
+  const [streaming, setStreaming] = useState(false)
+  const [streamingContent, setStreamingContent] = useState('')
+  const [collapsed, setCollapsed] = useState(false)
+  const scrollRef = useRef<HTMLDivElement>(null)
+  const inputRef = useRef<HTMLInputElement>(null)
+
+  // 스크롤 하단 유지
+  const scrollToBottom = useCallback(() => {
+    if (scrollRef.current) {
+      scrollRef.current.scrollTop = scrollRef.current.scrollHeight
+    }
+  }, [])
+
+  useEffect(() => {
+    scrollToBottom()
+  }, [messages, streamingContent, scrollToBottom])
+
+  // 이벤트 구독
+  useEffect(() => {
+    const unsubDelta = window.electronAPI.meetingChat.onDelta((data) => {
+      setStreaming(true)
+      setStreamingContent((prev) => prev + data.token)
+    })
+
+    const unsubMessage = window.electronAPI.meetingChat.onMessage((msg) => {
+      setMessages((prev) => [...prev, msg])
+      setStreaming(false)
+      setStreamingContent('')
+    })
+
+    const unsubError = window.electronAPI.meetingChat.onError((_err) => {
+      setStreaming(false)
+      setStreamingContent('')
+    })
+
+    return () => {
+      unsubDelta()
+      unsubMessage()
+      unsubError()
+    }
+  }, [])
+
+  const handleSend = useCallback(() => {
+    const text = inputValue.trim()
+    if (!text || streaming) return
+
+    const userMsg: MeetingChatMessage = {
+      role: 'user',
+      content: text,
+      timestamp: Date.now(),
+    }
+    setMessages((prev) => [...prev, userMsg])
+    setInputValue('')
+    window.electronAPI.meetingChat.send({ sessionId, message: text })
+    inputRef.current?.focus()
+  }, [inputValue, streaming, sessionId])
+
+  const handleKeyDown = useCallback(
+    (e: React.KeyboardEvent<HTMLInputElement>) => {
+      if (e.key === 'Enter' && !e.shiftKey) {
+        e.preventDefault()
+        handleSend()
+      }
+    },
+    [handleSend],
+  )
+
+  const handleClear = useCallback(() => {
+    setMessages([])
+    setStreamingContent('')
+    setStreaming(false)
+    window.electronAPI.meetingChat.clear({ sessionId })
+  }, [sessionId])
+
+  const handleToggleCollapse = useCallback(() => {
+    setCollapsed((prev) => !prev)
+  }, [])
+
+  return (
+    <Box
+      sx={{
+        flexShrink: 0,
+        borderTop: `1px solid ${d3roPalette.border.default}`,
+        bgcolor: d3roPalette.bg.card,
+        display: 'flex',
+        flexDirection: 'column',
+        height: collapsed ? COLLAPSED_HEIGHT : EXPANDED_HEIGHT,
+        transition: 'height 0.2s ease',
+        overflow: 'hidden',
+        boxShadow: d3roShadow.inset,
+      }}
+    >
+      {/* 헤더 */}
+      <Box
+        sx={{
+          display: 'flex',
+          alignItems: 'center',
+          px: 1.5,
+          height: COLLAPSED_HEIGHT,
+          flexShrink: 0,
+          borderBottom: collapsed ? 'none' : `1px solid ${d3roPalette.border.subtle}`,
+          gap: 1,
+        }}
+      >
+        <PhosphorText
+          variant="dim"
+          sx={{ fontSize: d3roTypo.meta.size, letterSpacing: d3roTypo.meta.spacing, flex: 1 }}
+        >
+          {t('meeting.chat')}
+        </PhosphorText>
+
+        <Tooltip title={t('meeting.chatClear')}>
+          <IconButton
+            size="small"
+            onClick={handleClear}
+            disabled={messages.length === 0 && !streaming}
+          >
+            <DeleteSweepIcon sx={{ fontSize: 15, color: d3roPalette.text.inactive }} />
+          </IconButton>
+        </Tooltip>
+
+        <Tooltip title={collapsed ? t('meeting.chatExpand') : t('meeting.chatCollapse')}>
+          <IconButton size="small" onClick={handleToggleCollapse}>
+            {collapsed ? (
+              <ExpandLessIcon sx={{ fontSize: 15, color: d3roPalette.text.inactive }} />
+            ) : (
+              <ExpandMoreIcon sx={{ fontSize: 15, color: d3roPalette.text.inactive }} />
+            )}
+          </IconButton>
+        </Tooltip>
+      </Box>
+
+      {!collapsed && (
+        <>
+          {/* 메시지 히스토리 */}
+          <Box
+            ref={scrollRef}
+            sx={{
+              flex: 1,
+              overflowY: 'auto',
+              px: 1.5,
+              py: 1,
+              display: 'flex',
+              flexDirection: 'column',
+              gap: 0.75,
+              minHeight: 0,
+            }}
+          >
+            {messages.map((msg, idx) => (
+              <Box
+                key={idx}
+                sx={{
+                  display: 'flex',
+                  justifyContent: msg.role === 'user' ? 'flex-end' : 'flex-start',
+                }}
+              >
+                <Box
+                  sx={{
+                    maxWidth: '80%',
+                    px: 1.25,
+                    py: 0.5,
+                    borderRadius: '6px',
+                    fontFamily: d3roFontMono,
+                    fontSize: d3roTypo.compact.size,
+                    lineHeight: 1.5,
+                    bgcolor:
+                      msg.role === 'user'
+                        ? d3roPalette.accent.amberDim
+                        : d3roPalette.bg.elevated,
+                    color: d3roPalette.text.primary,
+                    border: `1px solid ${
+                      msg.role === 'user'
+                        ? d3roPalette.accent.amber
+                        : d3roPalette.border.subtle
+                    }`,
+                    wordBreak: 'break-word',
+                    whiteSpace: 'pre-wrap',
+                  }}
+                >
+                  {msg.content}
+                </Box>
+              </Box>
+            ))}
+
+            {/* 스트리밍 중 어시스턴트 메시지 */}
+            {streaming && (
+              <Box sx={{ display: 'flex', justifyContent: 'flex-start' }}>
+                <Box
+                  sx={{
+                    maxWidth: '80%',
+                    px: 1.25,
+                    py: 0.5,
+                    borderRadius: '6px',
+                    fontFamily: d3roFontMono,
+                    fontSize: d3roTypo.compact.size,
+                    lineHeight: 1.5,
+                    bgcolor: d3roPalette.bg.elevated,
+                    color: d3roPalette.text.primary,
+                    border: `1px solid ${d3roPalette.border.subtle}`,
+                    wordBreak: 'break-word',
+                    whiteSpace: 'pre-wrap',
+                  }}
+                >
+                  {streamingContent || <TypingIndicator />}
+                </Box>
+              </Box>
+            )}
+          </Box>
+
+          {/* 스트리밍 진행 표시 */}
+          {streaming && (
+            <LinearProgress
+              sx={{
+                height: 1,
+                flexShrink: 0,
+                bgcolor: d3roPalette.bg.inset,
+                '& .MuiLinearProgress-bar': { bgcolor: d3roPalette.accent.amber },
+              }}
+            />
+          )}
+
+          {/* 입력 영역 */}
+          <Box
+            sx={{
+              display: 'flex',
+              alignItems: 'center',
+              gap: 1,
+              px: 1.5,
+              py: 0.75,
+              flexShrink: 0,
+              borderTop: `1px solid ${d3roPalette.border.subtle}`,
+            }}
+          >
+            <TextField
+              inputRef={inputRef}
+              size="small"
+              fullWidth
+              value={inputValue}
+              onChange={(e) => setInputValue(e.target.value)}
+              onKeyDown={handleKeyDown}
+              placeholder={t('meeting.chatPlaceholder')}
+              disabled={streaming}
+              sx={{
+                '& .MuiInputBase-root': {
+                  fontFamily: d3roFontMono,
+                  fontSize: d3roTypo.compact.size,
+                  bgcolor: d3roPalette.bg.input,
+                  borderRadius: '4px',
+                },
+                '& .MuiOutlinedInput-notchedOutline': {
+                  borderColor: d3roPalette.border.default,
+                },
+                '&:hover .MuiOutlinedInput-notchedOutline': {
+                  borderColor: d3roPalette.border.strong,
+                },
+                '& .Mui-focused .MuiOutlinedInput-notchedOutline': {
+                  borderColor: d3roPalette.accent.amber,
+                },
+              }}
+            />
+            <PhysicalButton
+              size="small"
+              onClick={handleSend}
+              disabled={!inputValue.trim() || streaming}
+              sx={{ flexShrink: 0, height: 36, minWidth: 36, px: 1 }}
+            >
+              <SendIcon sx={{ fontSize: 14 }} />
+            </PhysicalButton>
+          </Box>
+        </>
+      )}
+    </Box>
+  )
+}

src/renderer/components/meeting/MeetingDetailTabs.tsx

@@ -17,6 +17,7 @@ import CheckIcon from '@mui/icons-material/Check'
 import { TranscriptTab } from './TranscriptTab'
 import { DocumentTab } from './DocumentTab'
 import { AddDocumentDialog } from './AddDocumentDialog'
+import { MeetingChatPanel } from './MeetingChatPanel'
 import { PhosphorText } from '../ds/PhosphorText'
 import { d3roPalette, d3roFontMono, d3roTypo } from '../../theme'
 import { useI18n } from '../../i18n'
@@ -323,6 +324,9 @@ export function MeetingDetailTabs({
         )}
       </Box>
 
+      {/* AI 채팅 패널 */}
+      <MeetingChatPanel sessionId={detail.id} />
+
       {/* 문서 생성 다이얼로그 */}
       <AddDocumentDialog
         open={dialogOpen}

src/renderer/components/meeting/TranscriptTab.tsx

@@ -2,13 +2,14 @@
 // Phase 14.5: 전사 편집 탭 (상세 페이지용)
 
 import { useState, useCallback } from 'react'
-import { Box, Switch, FormControlLabel } from '@mui/material'
+import { Box, Switch, FormControlLabel, LinearProgress } from '@mui/material'
 import { EditableSegment } from './EditableSegment'
 import { PhysicalButton } from '../ds/PhysicalButton'
 import { PhosphorText } from '../ds/PhosphorText'
 import { d3roPalette, d3roFontMono, d3roTypo } from '../../theme'
 import { useI18n } from '../../i18n'
 import FileDownloadIcon from '@mui/icons-material/FileDownload'
+import AutoFixHighIcon from '@mui/icons-material/AutoFixHigh'
 
 interface TranscriptTabProps {
   sessionId: string
@@ -25,7 +26,7 @@ type TimelineItem =
   | { kind: 'memo'; id: string; timestamp: number; content: string }
 
 export function TranscriptTab({
-  sessionId: _sessionId,
+  sessionId,
   segments,
   rawTranscript,
   editedTranscript,
@@ -35,6 +36,16 @@ export function TranscriptTab({
 }: TranscriptTabProps): React.ReactElement {
   const { t } = useI18n()
   const [showEdited, setShowEdited] = useState(true)
+  const [polishing, setPolishing] = useState(false)
+
+  const handlePolish = useCallback(async () => {
+    setPolishing(true)
+    const resp = await window.electronAPI.meetingMode.polishTranscript({ sessionId })
+    if (resp.success) {
+      onSaveTranscript(resp.data)
+    }
+    setPolishing(false)
+  }, [sessionId, onSaveTranscript])
 
   const handleDownloadTxt = useCallback(() => {
     const content = showEdited && editedTranscript ? editedTranscript : (rawTranscript ?? '')
@@ -91,16 +102,39 @@ export function TranscriptTab({
             </PhosphorText>
           }
         />
-        <PhysicalButton
+        <Box sx={{ display: 'flex', alignItems: 'center', gap: 0.75 }}>
-          size="small"
+          <PhysicalButton
-          onClick={handleDownloadTxt}
+            size="small"
-          sx={{ height: 30, fontSize: d3roTypo.engrave.size }}
+            onClick={handlePolish}
-        >
+            disabled={polishing}
-          <FileDownloadIcon sx={{ fontSize: 13, mr: 0.5 }} />
+            sx={{ height: 30, fontSize: d3roTypo.engrave.size }}
-          {t('meeting.downloadTranscript')}
+          >
-        </PhysicalButton>
+            <AutoFixHighIcon sx={{ fontSize: 13, mr: 0.5 }} />
+            {polishing ? t('meeting.polishing') : t('meeting.polish')}
+          </PhysicalButton>
+          <PhysicalButton
+            size="small"
+            onClick={handleDownloadTxt}
+            sx={{ height: 30, fontSize: d3roTypo.engrave.size }}
+          >
+            <FileDownloadIcon sx={{ fontSize: 13, mr: 0.5 }} />
+            {t('meeting.downloadTranscript')}
+          </PhysicalButton>
+        </Box>
       </Box>
 
+      {/* 폴리싱 진행 표시 */}
+      {polishing && (
+        <LinearProgress
+          sx={{
+            height: 2,
+            mb: 1,
+            bgcolor: d3roPalette.bg.inset,
+            '& .MuiLinearProgress-bar': { bgcolor: d3roPalette.accent.amber },
+          }}
+        />
+      )}
+
       {/* 타임라인 스크롤 영역 */}
       <Box
         sx={{

src/renderer/i18n/de.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "Bericht",
   "meeting.ideaNoteTemplate": "Ideennotiz",
   "meeting.customTemplate": "Benutzerdefiniert",
-  "meeting.downloadTranscript": "Transkript herunterladen"
+  "meeting.downloadTranscript": "Transkript herunterladen",
+  "meeting.polish": "KI Glätten",
+  "meeting.polishing": "KI glättet Transkript...",
+  "meeting.polished": "KI Glättung abgeschlossen",
+  "meeting.mindmapTemplate": "Mindmap",
+  "meeting.chat": "KI-Chat",
+  "meeting.chatPlaceholder": "Fragen Sie zum Meeting...",
+  "meeting.chatSend": "Senden",
+  "meeting.chatClear": "Chat löschen",
+  "meeting.copyToClipboard": "In Zwischenablage kopieren",
+  "meeting.copied": "Kopiert",
+  "meeting.chatCollapse": "Chat einklappen",
+  "meeting.chatExpand": "Chat ausklappen"
 }

src/renderer/i18n/en.json

@@ -453,5 +453,17 @@
   "meeting.reportTemplate": "Report",
   "meeting.ideaNoteTemplate": "Idea Note",
   "meeting.customTemplate": "Custom",
-  "meeting.downloadTranscript": "Download Transcript"
+  "meeting.downloadTranscript": "Download Transcript",
+  "meeting.polish": "AI Polish",
+  "meeting.polishing": "AI is polishing transcript...",
+  "meeting.polished": "AI Polish complete",
+  "meeting.mindmapTemplate": "Mind Map",
+  "meeting.chat": "AI Chat",
+  "meeting.chatPlaceholder": "Ask about the meeting...",
+  "meeting.chatSend": "Send",
+  "meeting.chatClear": "Clear Chat",
+  "meeting.copyToClipboard": "Copy to Clipboard",
+  "meeting.copied": "Copied",
+  "meeting.chatCollapse": "Collapse Chat",
+  "meeting.chatExpand": "Expand Chat"
 }

src/renderer/i18n/es.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "Informe",
   "meeting.ideaNoteTemplate": "Nota de ideas",
   "meeting.customTemplate": "Personalizado",
-  "meeting.downloadTranscript": "Descargar transcripción"
+  "meeting.downloadTranscript": "Descargar transcripción",
+  "meeting.polish": "Pulir con IA",
+  "meeting.polishing": "IA puliendo transcripción...",
+  "meeting.polished": "Pulido con IA completado",
+  "meeting.mindmapTemplate": "Mapa mental",
+  "meeting.chat": "Chat IA",
+  "meeting.chatPlaceholder": "Pregunta sobre la reunión...",
+  "meeting.chatSend": "Enviar",
+  "meeting.chatClear": "Limpiar chat",
+  "meeting.copyToClipboard": "Copiar al portapapeles",
+  "meeting.copied": "Copiado",
+  "meeting.chatCollapse": "Contraer chat",
+  "meeting.chatExpand": "Expandir chat"
 }

src/renderer/i18n/fr.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "Rapport",
   "meeting.ideaNoteTemplate": "Note d'idées",
   "meeting.customTemplate": "Personnalisé",
-  "meeting.downloadTranscript": "Télécharger la transcription"
+  "meeting.downloadTranscript": "Télécharger la transcription",
+  "meeting.polish": "Peaufiner avec IA",
+  "meeting.polishing": "L'IA peaufine la transcription...",
+  "meeting.polished": "Peaufinement IA terminé",
+  "meeting.mindmapTemplate": "Carte mentale",
+  "meeting.chat": "Chat IA",
+  "meeting.chatPlaceholder": "Posez une question sur la réunion...",
+  "meeting.chatSend": "Envoyer",
+  "meeting.chatClear": "Effacer le chat",
+  "meeting.copyToClipboard": "Copier dans le presse-papiers",
+  "meeting.copied": "Copié",
+  "meeting.chatCollapse": "Réduire le chat",
+  "meeting.chatExpand": "Agrandir le chat"
 }

src/renderer/i18n/ja.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "レポート",
   "meeting.ideaNoteTemplate": "アイデアノート",
   "meeting.customTemplate": "カスタム",
-  "meeting.downloadTranscript": "文字起こしをダウンロード"
+  "meeting.downloadTranscript": "文字起こしをダウンロード",
+  "meeting.polish": "AI で整える",
+  "meeting.polishing": "AI が文字起こしを整えています...",
+  "meeting.polished": "AI 整形完了",
+  "meeting.mindmapTemplate": "マインドマップ",
+  "meeting.chat": "AI チャット",
+  "meeting.chatPlaceholder": "会議について質問してください...",
+  "meeting.chatSend": "送信",
+  "meeting.chatClear": "チャットをクリア",
+  "meeting.copyToClipboard": "クリップボードにコピー",
+  "meeting.copied": "コピーしました",
+  "meeting.chatCollapse": "チャットを折り畳む",
+  "meeting.chatExpand": "チャットを展開"
 }

src/renderer/i18n/ko.json

@@ -453,5 +453,17 @@
   "meeting.reportTemplate": "보고서",
   "meeting.ideaNoteTemplate": "아이디어 노트",
   "meeting.customTemplate": "커스텀",
-  "meeting.downloadTranscript": "전사 다운로드"
+  "meeting.downloadTranscript": "전사 다운로드",
+  "meeting.polish": "AI 다듬기",
+  "meeting.polishing": "AI가 전사를 다듬는 중...",
+  "meeting.polished": "AI 다듬기 완료",
+  "meeting.mindmapTemplate": "마인드맵",
+  "meeting.chat": "AI 채팅",
+  "meeting.chatPlaceholder": "회의 내용에 대해 질문하세요...",
+  "meeting.chatSend": "전송",
+  "meeting.chatClear": "대화 초기화",
+  "meeting.copyToClipboard": "클립보드 복사",
+  "meeting.copied": "복사됨",
+  "meeting.chatCollapse": "채팅 접기",
+  "meeting.chatExpand": "채팅 펼치기"
 }

src/renderer/i18n/pt.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "Relatório",
   "meeting.ideaNoteTemplate": "Nota de ideias",
   "meeting.customTemplate": "Personalizado",
-  "meeting.downloadTranscript": "Baixar transcrição"
+  "meeting.downloadTranscript": "Baixar transcrição",
+  "meeting.polish": "Polir com IA",
+  "meeting.polishing": "IA está polindo a transcrição...",
+  "meeting.polished": "Polimento IA concluído",
+  "meeting.mindmapTemplate": "Mapa mental",
+  "meeting.chat": "Chat IA",
+  "meeting.chatPlaceholder": "Pergunte sobre a reunião...",
+  "meeting.chatSend": "Enviar",
+  "meeting.chatClear": "Limpar chat",
+  "meeting.copyToClipboard": "Copiar para área de transferência",
+  "meeting.copied": "Copiado",
+  "meeting.chatCollapse": "Recolher chat",
+  "meeting.chatExpand": "Expandir chat"
 }

src/renderer/i18n/ru.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "Отчёт",
   "meeting.ideaNoteTemplate": "Заметка с идеями",
   "meeting.customTemplate": "Пользовательский",
-  "meeting.downloadTranscript": "Скачать транскрипцию"
+  "meeting.downloadTranscript": "Скачать транскрипцию",
+  "meeting.polish": "Улучшить с ИИ",
+  "meeting.polishing": "ИИ улучшает транскрипцию...",
+  "meeting.polished": "Улучшение ИИ завершено",
+  "meeting.mindmapTemplate": "Карта мыслей",
+  "meeting.chat": "ИИ Чат",
+  "meeting.chatPlaceholder": "Задайте вопрос о встрече...",
+  "meeting.chatSend": "Отправить",
+  "meeting.chatClear": "Очистить чат",
+  "meeting.copyToClipboard": "Копировать в буфер обмена",
+  "meeting.copied": "Скопировано",
+  "meeting.chatCollapse": "Свернуть чат",
+  "meeting.chatExpand": "Развернуть чат"
 }

src/renderer/i18n/th.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "รายงาน",
   "meeting.ideaNoteTemplate": "บันทึกไอเดีย",
   "meeting.customTemplate": "กำหนดเอง",
-  "meeting.downloadTranscript": "ดาวน์โหลดการถอดความ"
+  "meeting.downloadTranscript": "ดาวน์โหลดการถอดความ",
+  "meeting.polish": "ปรับแต่งด้วย AI",
+  "meeting.polishing": "AI กำลังปรับแต่งการถอดความ...",
+  "meeting.polished": "ปรับแต่งด้วย AI เสร็จสิ้น",
+  "meeting.mindmapTemplate": "แผนที่ความคิด",
+  "meeting.chat": "แชท AI",
+  "meeting.chatPlaceholder": "ถามเกี่ยวกับการประชุม...",
+  "meeting.chatSend": "ส่ง",
+  "meeting.chatClear": "ล้างแชท",
+  "meeting.copyToClipboard": "คัดลอกไปยังคลิปบอร์ด",
+  "meeting.copied": "คัดลอกแล้ว",
+  "meeting.chatCollapse": "ยุบแชท",
+  "meeting.chatExpand": "ขยายแชท"
 }

src/renderer/i18n/vi.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "Báo cáo",
   "meeting.ideaNoteTemplate": "Ghi chú ý tưởng",
   "meeting.customTemplate": "Tùy chỉnh",
-  "meeting.downloadTranscript": "Tải bản ghi"
+  "meeting.downloadTranscript": "Tải bản ghi",
+  "meeting.polish": "Tinh chỉnh bằng AI",
+  "meeting.polishing": "AI đang tinh chỉnh bản ghi...",
+  "meeting.polished": "Tinh chỉnh AI hoàn tất",
+  "meeting.mindmapTemplate": "Sơ đồ tư duy",
+  "meeting.chat": "Chat AI",
+  "meeting.chatPlaceholder": "Hỏi về cuộc họp...",
+  "meeting.chatSend": "Gửi",
+  "meeting.chatClear": "Xóa chat",
+  "meeting.copyToClipboard": "Sao chép vào bộ nhớ tạm",
+  "meeting.copied": "Đã sao chép",
+  "meeting.chatCollapse": "Thu gọn chat",
+  "meeting.chatExpand": "Mở rộng chat"
 }

src/renderer/i18n/zh-TW.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "報告",
   "meeting.ideaNoteTemplate": "創意筆記",
   "meeting.customTemplate": "自訂",
-  "meeting.downloadTranscript": "下載轉錄"
+  "meeting.downloadTranscript": "下載轉錄",
+  "meeting.polish": "AI 潤飾",
+  "meeting.polishing": "AI 正在潤飾轉錄...",
+  "meeting.polished": "AI 潤飾完成",
+  "meeting.mindmapTemplate": "心智圖",
+  "meeting.chat": "AI 聊天",
+  "meeting.chatPlaceholder": "詢問有關會議的內容...",
+  "meeting.chatSend": "傳送",
+  "meeting.chatClear": "清空聊天",
+  "meeting.copyToClipboard": "複製到剪貼簿",
+  "meeting.copied": "已複製",
+  "meeting.chatCollapse": "收起聊天",
+  "meeting.chatExpand": "展開聊天"
 }

src/renderer/i18n/zh.json

@@ -253,5 +253,17 @@
   "meeting.reportTemplate": "报告",
   "meeting.ideaNoteTemplate": "创意笔记",
   "meeting.customTemplate": "自定义",
-  "meeting.downloadTranscript": "下载转录"
+  "meeting.downloadTranscript": "下载转录",
+  "meeting.polish": "AI 润色",
+  "meeting.polishing": "AI 正在润色转录...",
+  "meeting.polished": "AI 润色完成",
+  "meeting.mindmapTemplate": "思维导图",
+  "meeting.chat": "AI 聊天",
+  "meeting.chatPlaceholder": "询问关于会议的内容...",
+  "meeting.chatSend": "发送",
+  "meeting.chatClear": "清空聊天",
+  "meeting.copyToClipboard": "复制到剪贴板",
+  "meeting.copied": "已复制",
+  "meeting.chatCollapse": "收起聊天",
+  "meeting.chatExpand": "展开聊天"
 }

src/shared/errors.ts

@@ -165,6 +165,8 @@ export enum ErrorCode {
   MeetingDocTemplateNotFound = 890,
   MeetingDocTemplateBuiltinDelete = 891,
   MeetingDocxExportFailed = 892,
+  MeetingPolishFailed = 893,
+  MeetingChatFailed = 894,
 
   // === Config (800-849) ===
   ConfigReadFailed = 800,

src/shared/ipc-channels.ts

@@ -332,6 +332,7 @@ export const IPC_CHANNELS = {
     PROCESSING_PROGRESS: 'meetingMode:processingProgress',
     SESSION_COMPLETED: 'meetingMode:sessionCompleted',
     DOC_GENERATING_PROGRESS: 'meetingMode:docGeneratingProgress',
+    POLISH_TRANSCRIPT: 'meetingMode:polishTranscript',
     ERROR: 'meetingMode:error',
   },
 
@@ -343,6 +344,16 @@ export const IPC_CHANNELS = {
     DELETE: 'meetingDocTemplate:delete',
   },
 
+  // ── Phase 15: Meeting AI Chat ──
+  MEETING_CHAT: {
+    SEND: 'meetingChat:send',
+    CANCEL: 'meetingChat:cancel',
+    CLEAR: 'meetingChat:clear',
+    DELTA: 'meetingChat:delta',
+    MESSAGE: 'meetingChat:message',
+    ERROR: 'meetingChat:error',
+  },
+
   // ── Phase 11: License & Monetization ──
   LICENSE: {
     GET_INFO: 'license:getInfo',

src/shared/types.ts

@@ -1365,7 +1365,7 @@ export interface MeetingProcessingProgress {
 // Phase 14.5: Meeting Document Types
 // ============================================================
 
-export type MeetingDocTemplateType = 'minutes' | 'report' | 'idea-note' | 'custom'
+export type MeetingDocTemplateType = 'minutes' | 'report' | 'idea-note' | 'custom' | 'mindmap'
 
 export interface MeetingDocTemplate {
   id: string
@@ -1453,3 +1453,22 @@ export interface UpdateMeetingDocTemplateParams {
 export interface DeleteMeetingDocTemplateParams {
   id: string
 }
+
+// ============================================================
+// Phase 15: Meeting AI Chat
+// ============================================================
+
+export interface MeetingChatMessage {
+  role: 'user' | 'assistant'
+  content: string
+  timestamp: number
+}
+
+export interface MeetingChatSendParams {
+  sessionId: string
+  message: string
+}
+
+export interface MeetingChatDelta {
+  token: string
+}