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/renderer/theme.ts

@@ -0,0 +1,148 @@
+// src/renderer/theme.ts — MUI 7 테마 정의 (설계서 03 기반)
+
+import { createTheme, type ThemeOptions } from '@mui/material/styles'
+
+const commonOptions: ThemeOptions = {
+  typography: {
+    fontFamily: [
+      '-apple-system',
+      'BlinkMacSystemFont',
+      '"Segoe UI"',
+      'Roboto',
+      '"Helvetica Neue"',
+      'Arial',
+      'sans-serif'
+    ].join(','),
+    h4: { fontWeight: 600, fontSize: '1.5rem' },
+    h5: { fontWeight: 600, fontSize: '1.25rem' },
+    h6: { fontWeight: 600, fontSize: '1rem' },
+    subtitle1: { fontWeight: 500 },
+    body1: { fontSize: '0.9375rem' },
+    body2: { fontSize: '0.8125rem' },
+    button: { textTransform: 'none' as const, fontWeight: 500 }
+  },
+  shape: {
+    borderRadius: 12
+  },
+  components: {
+    MuiButton: {
+      defaultProps: {
+        disableElevation: true
+      },
+      styleOverrides: {
+        root: {
+          textTransform: 'none',
+          fontWeight: 500,
+          borderRadius: 8,
+          padding: '8px 16px'
+        }
+      }
+    },
+    MuiCard: {
+      defaultProps: {
+        elevation: 0
+      },
+      styleOverrides: {
+        root: {
+          borderRadius: 12,
+          border: '1px solid'
+        }
+      }
+    },
+    MuiDrawer: {
+      styleOverrides: {
+        paper: {
+          width: 240,
+          borderRight: 'none'
+        }
+      }
+    },
+    MuiListItemButton: {
+      styleOverrides: {
+        root: {
+          borderRadius: 8,
+          marginLeft: 8,
+          marginRight: 8
+        }
+      }
+    },
+    MuiTextField: {
+      defaultProps: {
+        size: 'small',
+        variant: 'outlined'
+      }
+    },
+    MuiChip: {
+      styleOverrides: {
+        root: {
+          borderRadius: 6,
+          fontWeight: 500
+        }
+      }
+    }
+  }
+}
+
+export const lightTheme = createTheme({
+  ...commonOptions,
+  palette: {
+    mode: 'light',
+    primary: {
+      main: 'rgb(31, 93, 242)',
+      light: 'rgb(71, 133, 255)',
+      dark: 'rgb(20, 65, 180)',
+      contrastText: '#FFFFFF'
+    },
+    secondary: {
+      main: 'rgb(108, 117, 125)',
+      light: 'rgb(173, 181, 189)',
+      dark: 'rgb(73, 80, 87)'
+    },
+    background: {
+      default: '#F9F9F9',
+      paper: '#FFFFFF'
+    },
+    text: {
+      primary: 'rgba(0, 0, 0, 0.87)',
+      secondary: 'rgba(0, 0, 0, 0.6)'
+    },
+    divider: 'rgba(0, 0, 0, 0.08)',
+    error: { main: '#D32F2F' },
+    success: { main: '#2E7D32' },
+    warning: { main: '#ED6C02' }
+  }
+})
+
+export const darkTheme = createTheme({
+  ...commonOptions,
+  palette: {
+    mode: 'dark',
+    primary: {
+      main: 'rgb(71, 133, 255)',
+      light: 'rgb(120, 170, 255)',
+      dark: 'rgb(31, 93, 242)',
+      contrastText: '#FFFFFF'
+    },
+    secondary: {
+      main: 'rgb(173, 181, 189)',
+      light: 'rgb(206, 212, 218)',
+      dark: 'rgb(108, 117, 125)'
+    },
+    background: {
+      default: '#121212',
+      paper: '#1E1E1E'
+    },
+    text: {
+      primary: 'rgba(255, 255, 255, 0.87)',
+      secondary: 'rgba(255, 255, 255, 0.6)'
+    },
+    divider: 'rgba(255, 255, 255, 0.08)',
+    error: { main: '#EF5350' },
+    success: { main: '#4CAF50' },
+    warning: { main: '#FFA726' }
+  }
+})
+
+export function getTheme(mode: 'light' | 'dark') {
+  return mode === 'dark' ? darkTheme : lightTheme
+}