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/config-handlers.ts

@@ -0,0 +1,98 @@
+// src/main/ipc/config-handlers.ts
+
+import { ipcMain, BrowserWindow } from 'electron'
+import { IPC_CHANNELS } from '@shared/ipc-channels'
+import { ipcSuccess, ipcError, ErrorCode } from '@shared/errors'
+import { configGet, configSet, configGetAll, configReset } from '../services/ConfigService'
+import { getAutoLaunchService } from '../services/AutoLaunchService'
+import { reapplyThemeToAllPopups } from '../windows/WindowManager'
+
+/** 설정 변경 시 모든 렌더러에 broadcast */
+function broadcastConfigChanged(key: string, value: unknown, previousValue?: unknown): void {
+  for (const win of BrowserWindow.getAllWindows()) {
+    win.webContents.send(IPC_CHANNELS.CONFIG.CHANGED, { key, value, previousValue })
+  }
+}
+import type {
+  ConfigGetParams,
+  ConfigSetParams,
+  ConfigResetParams,
+  SetThemeParams,
+  SetLanguageParams,
+  SetAutoLaunchParams,
+  SetCloseToTrayParams,
+  AppConfig
+} from '@shared/types'
+
+export function registerConfigHandlers(): void {
+  ipcMain.handle(IPC_CHANNELS.CONFIG.GET, async (_event, params: ConfigGetParams) => {
+    try {
+      return ipcSuccess(configGet(params.key))
+    } catch {
+      return ipcError(ErrorCode.ConfigReadFailed, `Failed to read config key: ${params.key}`)
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.SET, async (_event, params: ConfigSetParams) => {
+    try {
+      const prev = configGet(params.key)
+      configSet(params.key, params.value as AppConfig[typeof params.key])
+      broadcastConfigChanged(params.key, params.value, prev)
+      return ipcSuccess(undefined)
+    } catch {
+      return ipcError(ErrorCode.ConfigWriteFailed, `Failed to write config key: ${params.key}`)
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.GET_ALL, async () => {
+    return ipcSuccess(configGetAll())
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.RESET, async (_event, params: ConfigResetParams) => {
+    try {
+      configReset(params.key)
+      return ipcSuccess(undefined)
+    } catch {
+      return ipcError(ErrorCode.ConfigResetFailed, 'Failed to reset config')
+    }
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.GET_THEME, async () => {
+    return ipcSuccess(configGet('theme'))
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.SET_THEME, async (_event, params: SetThemeParams) => {
+    const prev = configGet('theme')
+    configSet('theme', params.theme)
+    broadcastConfigChanged('theme', params.theme, prev)
+    reapplyThemeToAllPopups()
+    return ipcSuccess(undefined)
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.GET_LANGUAGE, async () => {
+    return ipcSuccess(configGet('language'))
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.SET_LANGUAGE, async (_event, params: SetLanguageParams) => {
+    configSet('language', params.language)
+    return ipcSuccess(undefined)
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.GET_AUTO_LAUNCH, async () => {
+    return ipcSuccess(configGet('autoLaunch'))
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.SET_AUTO_LAUNCH, async (_event, params: SetAutoLaunchParams) => {
+    getAutoLaunchService().setEnabled(params.enabled)
+    return ipcSuccess(undefined)
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.GET_CLOSE_TO_TRAY, async () => {
+    return ipcSuccess(configGet('closeToTray'))
+  })
+
+  ipcMain.handle(IPC_CHANNELS.CONFIG.SET_CLOSE_TO_TRAY, async (_event, params: SetCloseToTrayParams) => {
+    configSet('closeToTray', params.enabled)
+    return ipcSuccess(undefined)
+  })
+}