Write, check, repair and publish a plan page: a project's plans and subject files under its plans directory, rendered by .agents/pstack/plan-page.mjs and rendered as one local HTML page per subject with a local index of every subject, and published to claude.ai at each hand-back for comments and feedback. The page is how planned work hands back to the user. Use before writing or changing a plan, a subject file in <plans>/topics or its page; at every stop that hands back work with a plan, such as a review verdict other than a review-only panel's, a next answer or a playbook's close; before writing or updating a PR body, which renders from the PR's plan, or a comment about your commits on someone else's PR; when a plan page or its claude.ai artifact looks wrong or refuses to render; to republish a page; or to change the page shape or a playbook's page sections.