Phase 15.5 구현: 화자 구분 (Speaker Diarization)

- Sidecar: pyannote /diarize 엔드포인트 + requirements.txt 업데이트
- LLM 기반 화자 추정 (Phase 1 — 오디오 보존 없이 전사 텍스트 분석)
- CaptionSegment에 speaker 필드 추가
- EditableSegment: 화자별 색상 바 + 화자 Chip 표시
- TranscriptTab: 화자 구분 버튼 + 진행률
- 설정: HuggingFace 토큰 입력 + Diarization 토글
- IPC: DIARIZE + DIARIZATION_PROGRESS 채널
- 에러코드: 895-897
- 12개 locale i18n

src/renderer/components/meeting/MeetingDetailTabs.tsx

@@ -81,6 +81,7 @@ export function MeetingDetailTabs({
   const [tabIndex, setTabIndex] = useState(0)
   const [dialogOpen, setDialogOpen] = useState(false)
   const [generating, setGenerating] = useState(false)
+  const [diarizing, setDiarizing] = useState(false)
   const [editingTitle, setEditingTitle] = useState(false)
   const [titleDraft, setTitleDraft] = useState(detail.title ?? '')
 
@@ -176,6 +177,17 @@ export function MeetingDetailTabs({
     [],
   )
 
+  // ── 화자 구분 ──
+  const handleDiarize = useCallback(async () => {
+    setDiarizing(true)
+    const resp = await window.electronAPI.meetingMode.diarize({ sessionId: detail.id })
+    if (resp.success) {
+      const updated = await window.electronAPI.meetingMode.getSession({ sessionId: detail.id })
+      if (updated.success) setDetail(updated.data)
+    }
+    setDiarizing(false)
+  }, [detail.id])
+
   // ── 문서 생성 ──
   const handleGenerate = useCallback(
     async (templateId: string, customPrompt?: string, customTitle?: string) => {
@@ -306,6 +318,8 @@ export function MeetingDetailTabs({
             memos={detail.memos}
             onEditSegment={handleEditSegment}
             onSaveTranscript={handleSaveTranscript}
+            onDiarize={handleDiarize}
+            diarizing={diarizing}
           />
         )}
         {documents.filter(Boolean).map((doc, idx) => {