fix(service-party-app): 修复 Electron 主进程编译配置

- 新增 tsconfig.electron.json 单独编译 Electron 主进程到 dist-electron/
- 更新 package.json main 入口为 dist-electron/main.js
- 更新 build 脚本先编译 electron 再 vite build

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/mpc-system/services/service-party-app/package.json

@@ -2,12 +2,13 @@
   "name": "service-party-app",
   "version": "1.0.0",
   "description": "Multi-party co-managed wallet participant application",
-  "main": "dist/electron/main.js",
+  "author": "RWADurian",
+  "main": "dist-electron/main.js",
   "scripts": {
     "dev": "concurrently \"npm run dev:vite\" \"npm run dev:electron\"",
     "dev:vite": "vite",
     "dev:electron": "wait-on http://localhost:5173 && electron .",
-    "build": "npx tsc && vite build && electron-builder",
+    "build": "npx tsc -p tsconfig.electron.json && vite build && electron-builder",
     "build:win": "npm run build -- --win",
     "build:mac": "npm run build -- --mac",
     "build:linux": "npm run build -- --linux",

backend/mpc-system/services/service-party-app/tsconfig.electron.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "CommonJS",
+    "moduleResolution": "node",
+    "lib": ["ES2020"],
+    "outDir": "dist-electron",
+    "rootDir": "electron",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "declaration": false
+  },
+  "include": ["electron/**/*"],
+  "exclude": ["node_modules"]
+}