Use this skill for Sprites — isolated, persistent cloud Linux environments from Fly.io with their own filesystem, URL, services, checkpoints, and network policy. Trigger it to create, list, exec into, or destroy sprites; to run builds, tests, or agents in a remote sandbox; to start long-running services and expose a preview URL; to snapshot and roll back state; to change outbound network rules; to call third-party APIs (GitHub, Slack, etc.) through the credential-injecting gateway; or whenever the user names Sprites, sprite-env, or sprites.dev. Works both from inside a sprite and from a machine outside one.