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

apps/desktop/src/main/ipc/voice-action-handlers.ts

@@ -0,0 +1,74 @@
+// src/main/ipc/voice-action-handlers.ts
+// Phase 13.3: OS 자동화 IPC 핸들러
+
+import { ipcMain } from 'electron'
+import { IPC_CHANNELS } from '@shared/ipc-channels'
+import { ErrorCode, ipcSuccess, ipcError } from '@shared/errors'
+import { getVoiceActionService } from '../services/VoiceActionService'
+import { getLogger } from '../services/LoggerService'
+import type { VoiceActionExecuteParams } from '@shared/types'
+
+const logger = getLogger('voice-action-handlers')
+
+export function registerVoiceActionHandlers(): void {
+  ipcMain.handle(
+    IPC_CHANNELS.VOICE_ACTION.EXECUTE,
+    async (_event, params: VoiceActionExecuteParams) => {
+      try {
+        await getVoiceActionService().execute(params.text)
+        return ipcSuccess(undefined)
+      } catch (err) {
+        const msg = err instanceof Error ? err.message : String(err)
+        logger.error('Voice action failed:', msg)
+        return ipcError(ErrorCode.VoiceActionExecutionFailed, msg)
+      }
+    },
+  )
+
+  ipcMain.handle(IPC_CHANNELS.VOICE_ACTION.GET_PRESETS, async () => {
+    try {
+      return ipcSuccess(getVoiceActionService().getPresets())
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err)
+      return ipcError(ErrorCode.UnknownError, msg)
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.VOICE_ACTION.GET_HISTORY, async () => {
+    try {
+      return ipcSuccess(getVoiceActionService().getHistory())
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err)
+      return ipcError(ErrorCode.UnknownError, msg)
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.VOICE_ACTION.CLEAR_HISTORY, async () => {
+    try {
+      getVoiceActionService().clearHistory()
+      return ipcSuccess(undefined)
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err)
+      return ipcError(ErrorCode.UnknownError, msg)
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.VOICE_ACTION.SET_ENABLED, async (_event, params: { enabled: boolean }) => {
+    try {
+      getVoiceActionService().setEnabled(params.enabled)
+      return ipcSuccess(undefined)
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err)
+      return ipcError(ErrorCode.UnknownError, msg)
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.VOICE_ACTION.IS_ENABLED, async () => {
+    try {
+      return ipcSuccess(getVoiceActionService().isEnabled)
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err)
+      return ipcError(ErrorCode.UnknownError, msg)
+    }
+  })
+}