feat(V2-1a): Monorepo 구조 전환 — apps/desktop으로 V1 이동

- npm workspaces 루트 (apps/*, packages/*) 세팅
- V1 전체를 apps/desktop/으로 git mv (src, resources, tests, sidecar,
  scripts, electron.vite.config.ts, electron-builder.yml, vitest.config.ts,
  tsconfig.node.json, tsconfig.web.json)
- apps/desktop/package.json 신규 (name=@d3ro/desktop)
- productName: 'd3ro-voice' 명시 — app.getName()을 고정하여 userData 경로
  %APPDATA%\d3ro-voice\ 그대로 유지 (기존 DB/설정 연속성 보장)
- 루트 package.json을 workspace 루트로 재구성, 공통 devDep만 유지
  (typescript, eslint, prettier)
- turbo.json, tsconfig.base.json 추가 (Turborepo 자체 설치는 별도 sub-phase)
- memory/project_status.md 생성 (규칙 13)

검증:
- npm run typecheck 통과
- npm run build 통과 (electron-vite main+preload+renderer)
- npm run dev 실제 실행 → DB/핫키/Ollama 자동 실행 모두 정상

src/main/ipc/audio-handlers.ts

@@ -1,101 +0,0 @@
-// src/main/ipc/audio-handlers.ts
-
-import { ipcMain } from 'electron'
-import { IPC_CHANNELS } from '@shared/ipc-channels'
-import { ipcSuccess, ipcError, ErrorCode } from '@shared/errors'
-import { getAudioCaptureService, calculateRMS } from '../services/AudioCaptureService'
-import { getMainWindow } from '../windows/WindowManager'
-import { configGet, configSet } from '../services/ConfigService'
-import { getLogger } from '../services/LoggerService'
-import type { SetDeviceParams } from '@shared/types'
-
-const logger = getLogger('audio-handlers')
-
-let testTimer: ReturnType<typeof setTimeout> | null = null
-let testAudioHandler: ((payload: { buffer: Buffer; timestamp: number }) => void) | null = null
-let testLevelInterval: ReturnType<typeof setInterval> | null = null
-let testLastRms = 0
-
-function stopAudioTest(): void {
-  const service = getAudioCaptureService()
-  if (testAudioHandler) {
-    service.off('audio-data', testAudioHandler)
-    testAudioHandler = null
-  }
-  if (testLevelInterval) {
-    clearInterval(testLevelInterval)
-    testLevelInterval = null
-  }
-  if (testTimer) {
-    clearTimeout(testTimer)
-    testTimer = null
-  }
-  testLastRms = 0
-  service.stop().catch(() => { /* ignore */ })
-}
-
-export function registerAudioHandlers(): void {
-  ipcMain.handle(IPC_CHANNELS.AUDIO.GET_DEVICES, async () => {
-    try {
-      const devices = await getAudioCaptureService().getDevices()
-      return ipcSuccess(devices)
-    } catch {
-      return ipcError(ErrorCode.AudioDeviceNotFound, 'Failed to enumerate audio devices')
-    }
-  })
-
-  ipcMain.handle(IPC_CHANNELS.AUDIO.GET_SELECTED_DEVICE, async () => {
-    return ipcSuccess(configGet('selectedDeviceId'))
-  })
-
-  ipcMain.handle(IPC_CHANNELS.AUDIO.SET_SELECTED_DEVICE, async (_event, params: SetDeviceParams) => {
-    try {
-      configSet('selectedDeviceId', params.deviceId)
-      return ipcSuccess(undefined)
-    } catch {
-      return ipcError(ErrorCode.AudioDeviceNotFound, 'Failed to set device')
-    }
-  })
-
-  ipcMain.handle(IPC_CHANNELS.AUDIO.TEST_DEVICE, async () => {
-    try {
-      // 이전 테스트가 진행 중이면 정리
-      stopAudioTest()
-
-      const service = getAudioCaptureService()
-      await service.start()
-
-      // 오디오 데이터에서 RMS 추적
-      testAudioHandler = (payload: { buffer: Buffer; timestamp: number }) => {
-        testLastRms = calculateRMS(payload.buffer)
-      }
-      service.on('audio-data', testAudioHandler)
-
-      // 100ms 간격으로 레벨을 렌더러에 전송
-      testLevelInterval = setInterval(() => {
-        const level = testLastRms > 0 ? Math.min(1.0, Math.pow(testLastRms, 0.28)) : 0
-        const win = getMainWindow()
-        if (win && !win.isDestroyed()) {
-          win.webContents.send('audio:testLevel', { level })
-        }
-      }, 100)
-
-      // 5초 후 자동 중지
-      testTimer = setTimeout(() => {
-        stopAudioTest()
-        const win = getMainWindow()
-        if (win && !win.isDestroyed()) {
-          win.webContents.send('audio:testLevel', { level: 0 })
-        }
-      }, 5000)
-
-      return ipcSuccess({ averageLevel: 0, peakLevel: 0, hasAudio: true })
-    } catch (err) {
-      stopAudioTest()
-      return ipcError(
-        ErrorCode.AudioDeviceNotFound,
-        `Audio test failed: ${err instanceof Error ? err.message : String(err)}`,
-      )
-    }
-  })
-}