<!-- swain-model-hint: sonnet, effort: medium -- Project Onboarding One-time setup for adopting swain in a project. This skill is not idempotent — it migrates files and installs tools. For per-session health checks, use swain-doctor. Preflight Before any phase, run the preflight script to gather environment state. This single call replaces all inline check blocks — phases below read from the JSON output instead of running shell commands. Store for use in all phases below. Every decision references a field from this JSON — do not run additional check commands unless performing a mutation. Phas…