Phase 14 구현: 회의 모드 (Meeting Mode)

실시간 녹음 + 타임스탬프 메모 + STT 전사 + LLM 구조화 회의록 + PDF/MD 내보내기.
CaptionService 연동, 동시 사용 충돌 방지, 긴 회의 2-pass 요약 지원.
DB 2테이블, IPC 15채널, UI 3뷰(목록/녹음/상세), 12개 locale i18n.

src/main/db/index.ts

@@ -129,6 +129,40 @@ export function initDatabase(): BetterSQLite3Database<typeof schema> {
     CREATE INDEX IF NOT EXISTS idx_rag_chunks_document_id ON rag_chunks(document_id);
   `)
 
+  // Phase 14: Meeting Mode 테이블 생성
+  sqlite.exec(`
+    CREATE TABLE IF NOT EXISTS meeting_sessions (
+      id               TEXT PRIMARY KEY,
+      title            TEXT,
+      status           TEXT NOT NULL DEFAULT 'recording',
+      started_at       INTEGER NOT NULL,
+      ended_at         INTEGER,
+      duration_ms      INTEGER,
+      raw_transcript   TEXT,
+      minutes_markdown TEXT,
+      minutes_json     TEXT,
+      stt_model        TEXT,
+      llm_model        TEXT,
+      stt_latency_ms   INTEGER,
+      llm_latency_ms   INTEGER,
+      error_message    TEXT,
+      created_at       INTEGER NOT NULL,
+      updated_at       INTEGER NOT NULL
+    );
+    CREATE INDEX IF NOT EXISTS idx_meeting_sessions_created_at ON meeting_sessions(created_at DESC);
+    CREATE INDEX IF NOT EXISTS idx_meeting_sessions_status ON meeting_sessions(status);
+
+    CREATE TABLE IF NOT EXISTS meeting_memos (
+      id            TEXT PRIMARY KEY,
+      session_id    TEXT NOT NULL,
+      content       TEXT NOT NULL,
+      timestamp_ms  INTEGER NOT NULL,
+      created_at    INTEGER NOT NULL
+    );
+    CREATE INDEX IF NOT EXISTS idx_meeting_memos_session_id ON meeting_memos(session_id);
+    CREATE INDEX IF NOT EXISTS idx_meeting_memos_timestamp ON meeting_memos(timestamp_ms);
+  `)
+
   // Phase 12.2: history 테이블에 summary_text 컬럼 마이그레이션
   try {
     const columns = sqlite.pragma('table_info(history)') as Array<{ name: string }>