Added PERSONA_PAGES.md at the root of the repository: what a persona page is, how the pages are rendered from content files, the sections every page answers in order, the content file format, the writing rules, the steps a coding session follows to write one page, the review before commit, and a checklist of about a hundred personas in nine groups with the areas each starts from and the pages it links to. Nothing on the website changes with this entry.
Plan for public pages about each kind of customer
Added the plan and checklist for persona pages: a public page for each kind of customer, saying which areas they would use and how the work moves between them.