Phase 7~8 구현: 테스트 + 빌드 + CI/CD + SoundEffect + AutoLaunch + UI 리디자인

- vitest 41개 단위 테스트 (HistoryService, DictionaryService, CustomInstructionService, VoiceModeService, D3ROError)
- electron-builder.yml (NSIS, asarUnpack, extraResources)
- .gitlab-ci.yml (lint, typecheck, test, build, release)
- SoundEffectService: WAV 프리로드 + PowerShell 재생 + VoiceMode 연동
- AutoLaunchService: app.setLoginItemSettings + ConfigService 동기화
- TextInsertService: 간이 삽입 검증 (EditMonitor 경량)
- 번들링 인프라: SoX 다운로드 스크립트, PyInstaller 빌드, 경로 해상도 유틸
- AudioCaptureService/LocalSTTService: 번들 경로 자동 감지
- 08-design-system.md 기반 MUI 테마 (다크+라이트+auto 테마 시스템)
- 전체 UI 컴포넌트 리디자인: AppLayout, Dashboard, StatusBar, History, Dictionary, Commands, Settings
- 효과음 WAV 생성: recording-start, recording-stop, error
- EPIPE 에러 핸들링 추가

tests/shared/errors.test.ts

@@ -0,0 +1,75 @@
+// tests/shared/errors.test.ts
+// D3ROError + IPCResult 헬퍼 테스트
+
+import { describe, it, expect } from 'vitest'
+import { D3ROError, ErrorCode, ipcSuccess, ipcError } from '../../src/shared/errors'
+
+describe('D3ROError', () => {
+  it('code, message, details를 올바르게 설정한다', () => {
+    const err = new D3ROError(ErrorCode.STTModelNotFound, 'Model not found', { modelId: 'large' })
+
+    expect(err.code).toBe(ErrorCode.STTModelNotFound)
+    expect(err.message).toBe('Model not found')
+    expect(err.details).toEqual({ modelId: 'large' })
+    expect(err.name).toBe('D3ROError')
+    expect(err instanceof Error).toBe(true)
+  })
+
+  it('toJSON으로 직렬화할 수 있다', () => {
+    const err = new D3ROError(ErrorCode.LLMServerUnreachable, 'Server down')
+    const json = err.toJSON()
+
+    expect(json.code).toBe(300)
+    expect(json.message).toBe('Server down')
+    expect(json.details).toBeUndefined()
+  })
+
+  it('fromJSON으로 역직렬화할 수 있다', () => {
+    const json = { code: ErrorCode.AudioDeviceNotFound, message: 'No mic' }
+    const err = D3ROError.fromJSON(json)
+
+    expect(err).toBeInstanceOf(D3ROError)
+    expect(err.code).toBe(ErrorCode.AudioDeviceNotFound)
+    expect(err.message).toBe('No mic')
+  })
+})
+
+describe('IPCResult helpers', () => {
+  it('ipcSuccess는 success: true + data를 반환한다', () => {
+    const result = ipcSuccess({ value: 42 })
+
+    expect(result.success).toBe(true)
+    if (result.success) {
+      expect(result.data).toEqual({ value: 42 })
+    }
+  })
+
+  it('ipcError는 success: false + error를 반환한다', () => {
+    const result = ipcError(ErrorCode.DBQueryFailed, 'Query failed', { table: 'history' })
+
+    expect(result.success).toBe(false)
+    if (!result.success) {
+      expect(result.error.code).toBe(ErrorCode.DBQueryFailed)
+      expect(result.error.message).toBe('Query failed')
+      expect(result.error.details).toEqual({ table: 'history' })
+    }
+  })
+})
+
+describe('ErrorCode', () => {
+  it('에러 코드 범위가 올바르다', () => {
+    // STT: 100-199
+    expect(ErrorCode.STTEngineNotInstalled).toBe(100)
+    expect(ErrorCode.STTGPUNotAvailable).toBe(140)
+
+    // LLM: 300-399
+    expect(ErrorCode.LLMServerUnreachable).toBe(300)
+    expect(ErrorCode.LLMPromptTooLong).toBe(331)
+
+    // Audio: 400-499
+    expect(ErrorCode.AudioDeviceNotFound).toBe(400)
+
+    // System: 900-999
+    expect(ErrorCode.UnknownError).toBe(999)
+  })
+})