Show HN: Mallard: Git for the age of AI agents

Mallard is a free, MIT-licensed tool for macOS and Windows that lets users share and back up Claude and Codex agent sessions using Cloudflare R2, Dropbox, or Mallard Cloud, and pull and resume sessions with their original context. It uses a lightweight version of Git with a reworked storage protocol that removes CAS so it works with any cloud storage supporting LIST and PUT APIs, without a Git server or cloud VMs. The project is available at https://mallard-ai.com/ and https://github.com/Git4Agent/mallard-app.