Documentation-only stack

Scenario: improve onboarding docs while keeping nav stable.

main
└─ stack/docs-onboarding-spec
   └─ stack/docs-homepage-quickstart
      └─ stack/docs-reference-operations

Even docs-only stacks need validation. Use your project's docs build, link checker, or preview workflow, and put generated plans and summaries under .pi/stack-ops/, not in the docs tree.

Use this as a shape check, not a substitute for an approved spec and plan. Start with Quickstart, then use Your first stack for the full walkthrough.