- Implement a core package that will be in charge of file comparison, transfer

- Implement protocol :
    - Be careful about metadata, large files, error handling and performance
    - Implement the sql version
    - Implement the tls version

- Create configuration file :
    - server address
    - sync mode
    - sync interval

- Enhanced error handling :
    - Only use panic during uncoverable situations
    - Use more explicit error types

- Use json/yaml config format (see viper)

- Authentication :
    - Use a token based authentication system
    - Use a secure way to store the token (KMS ?)

- Maintain a data structure to track the synchronization state of files :
    - Local status
    - Remote status
    - Synchronization status

- See io/ioutil or io/fs to read/write files

- Break functions into little functions

- Use appropriate data structures to represent files and folders. Consider using a map to store file information for faster lookups.

- Improve logging (using a library like logrus or zap) ?

- Unit & integration tests

- Improve code style

- Document






// Gemini

- Implement a CLI :
    - Use a library like cobra or urfave/cli

- Implement a GUI :
    - Use a library like fltk or qt

- Implement a web interface :
    - Use a library like gin or echo

- Implement a daemon :
    - Use a library like daemon or godo

- Implement a service :
    - Use a library like consul or etcd

- Implement a cloud storage integration :
    - Use a library like aws-sdk-go or google-cloud-go

- Implement a version control system integration :
    - Use a library like git or mercurial

- Implement a backup system integration :
    - Use a library like restic or borg

- Implement a file system watcher :
    - Use a library like fsnotify or inotify