Phase 1+2 구현: Electron 뼈대 + STT/핫키/오케스트레이터

Phase 1:
- 프로젝트 초기화 (TypeScript strict, electron-vite, ESLint, Prettier)
- shared 타입 (ipc-channels 113채널, types, errors, constants)
- 메인 프로세스 뼈대 (bootstrap, lifecycle, 단일 인스턴스)
- LoggerService, ConfigService (electron-store ESM dynamic import)
- React 19 + MUI 7 Dashboard, 시스템 트레이

Phase 2:
- AudioCaptureService (node-record-lpcm16, PCM16 16kHz mono)
- HotkeyService (uiohook-napi, 더블프레스, holdMode/toggleMode)
- LocalSTTService (faster-whisper Python sidecar, 이중 조건 플러시)
- VoiceModeService 오케스트레이터 (이중 상태머신, Action Queue)
- Python sidecar (FastAPI: health/load/transcribe/shutdown)
- IPC 핸들러 (voice, stt, hotkey) + Preload API 확장

src/main/services/ConfigService.ts

@@ -0,0 +1,119 @@
+// src/main/services/ConfigService.ts
+// electron-store 기반 설정 관리. 설계서 02의 AppConfig 타입 사용.
+
+import { EventEmitter } from 'events'
+import type { AppConfig, ConfigChangedEvent } from '@shared/types'
+import { getLogger } from './LoggerService'
+
+const logger = getLogger('ConfigService')
+
+// electron-store v10은 ESM 전용이므로 동적 import 필요
+interface ElectronStore<T extends Record<string, unknown>> {
+  get<K extends keyof T>(key: K): T[K]
+  set<K extends keyof T>(key: K, value: T[K]): void
+  store: T
+}
+
+const CONFIG_DEFAULTS: AppConfig = {
+  theme: 'auto',
+  language: 'ko',
+  closeToTray: true,
+  autoLaunch: false,
+  soundEnabled: true,
+  selectedDeviceId: null,
+  sttModelId: 'base',
+  sttLanguage: 'auto',
+  ttsVoiceId: null,
+  ttsSpeed: 1.0,
+  ollamaServerUrl: 'http://localhost:11434',
+  llmModelId: null,
+  defaultLLMAction: 'refine',
+  dictationShortcut: {
+    keyCode: 0xa5, // Right Alt
+    ctrl: false,
+    alt: false,
+    shift: false,
+    meta: false,
+    displayLabel: 'Right Alt'
+  },
+  handsFreeShortcut: {
+    keyCode: 0xa5,
+    ctrl: false,
+    alt: false,
+    shift: false,
+    meta: false,
+    displayLabel: 'Right Alt (double)'
+  },
+  commandShortcut: {
+    keyCode: 0xa5,
+    ctrl: true,
+    alt: false,
+    shift: false,
+    meta: false,
+    displayLabel: 'Ctrl + Right Alt'
+  },
+  hotkeyEnabled: true,
+  insertMethod: 'clipboard',
+  autoInsert: true,
+  maxHistoryEntries: 1000
+}
+
+let store: ElectronStore<AppConfig> | null = null
+const emitter = new EventEmitter()
+
+export async function initConfigService(): Promise<void> {
+  const { default: Store } = await import('electron-store')
+  store = new Store<AppConfig>({
+    name: 'd3ro-voice-config',
+    defaults: CONFIG_DEFAULTS
+  })
+  logger.info('ConfigService initialized')
+}
+
+export function getConfigService(): ElectronStore<AppConfig> | null {
+  return store
+}
+
+export function configGet<K extends keyof AppConfig>(key: K): AppConfig[K] {
+  if (!store) {
+    logger.warn(`ConfigService not initialized, returning default for "${key}"`)
+    return CONFIG_DEFAULTS[key]
+  }
+  return store.get(key)
+}
+
+export function configSet<K extends keyof AppConfig>(key: K, value: AppConfig[K]): void {
+  if (!store) {
+    logger.warn(`ConfigService not initialized, cannot set "${key}"`)
+    return
+  }
+  const previousValue = store.get(key)
+  store.set(key, value)
+
+  const event: ConfigChangedEvent = {
+    key,
+    value,
+    previousValue
+  }
+  emitter.emit('config-changed', event)
+  logger.debug(`Config changed: ${key}`)
+}
+
+export function configGetAll(): AppConfig {
+  if (!store) return { ...CONFIG_DEFAULTS }
+  return store.store
+}
+
+export function configReset(key?: keyof AppConfig): void {
+  if (!store) return
+  if (key) {
+    store.set(key, CONFIG_DEFAULTS[key])
+  } else {
+    store.store = { ...CONFIG_DEFAULTS }
+  }
+}
+
+export function onConfigChanged(callback: (event: ConfigChangedEvent) => void): () => void {
+  emitter.on('config-changed', callback)
+  return () => emitter.off('config-changed', callback)
+}