- Add electron-dev.mjs script for hot-reload development
- Support automatic Electron dependency building
- Start Remix dev server and Electron app concurrently
- Add proper process management and cleanup
- Fix preload script path for development mode
- Add electron:dev and electron:dev:inspect npm scripts
This enables developers to run 'pnpm electron:dev' for a complete
hot-reload development experience with automatic rebuilding and
process management.