Preview Environments
A preview environment is a temporary clone of an existing environment
— typically production or staging — that stands up for a branch, PR,
or spike, then tears down when the work merges. Every instance on the
project's canvas comes along.
The full walkthrough lives under Workflows: see
Preview Environments from the CLI for the YAML
schema, the mass environment preview command, env-var expansion, and
a drop-in GitHub Actions workflow.