npx agenttwin init. Review detected dependencies and code paths. Launch an installed OpenCode session with --agent opencode, or give .agenttwin/AGENT-TASK.md to your coding agent. Supply missing inputs and expected outcomes.npx agenttwin sync with AGENTTWIN_TOKEN configured. Alternatively import discovery JSON. Inspect resource coverage and unsupported dependencies. No production account is copied.npx agenttwin prepare --file preparation.json in the project.agenttwin.bundle.json in Workflows, review the files and fixtures, and explicitly approve the upload. Execution creates a fresh hosted sandbox and new test credentials. Starter configuration files alone do not package your application.packages/cli/README.md for the preparation schema and commands.