The context preservation problem is genuinely painful - I've been using task.md files and CLAUDE.md conventions to maintain agent state across sessions, and it's duct tape at best. First-class "checkpoints" that capture reasoning alongside diffs is an appealing idea.

But I'm skeptical of building this as a separate platform rather than as tooling on top of git. The most useful AI dev workflow improvements I've seen (cursor rules, aider conventions, claude hooks) all succeeded precisely because they stayed close to existing tools. The moment you ask developers to switch their entire SDLC stack, adoption becomes the real engineering challenge - not the tech.

Curious whether the open source commitment means the checkpoint format itself will be an open spec that other tools can build on.

The CLI is open source, everyone can use it and it does work with git only. So, no separate platform needed. The platform only provides convenience to view checkpoints at the moment. However you can also view them in the CLI. It's here https://github.com/entireio/cli