fix(cors): configure CORS to use frontend host from environment variable

docs: update README to reflect remote sync support in client-first sy…

…stem and mark remote sync with client key as complete

chore: update .gitignore and package.json for build process

- Added 'dist/*' to .gitignore to exclude build artifacts.
- Introduced new compile scripts in package.json for building the project for different architectures (x64, arm, win).