Organization-level files: the roadmap registry, community health files, and issue/PR templates shared by all repositories.

• ROADMAP.md — the unified registry of all work: a tree of phase → milestone → issue linked to real GitHub entities. The tree is the source of truth for the structure of work.
• ISSUE_TEMPLATE/, PULL_REQUEST_TEMPLATE.md — org-wide defaults.
• profile/README.md — the organization's public profile.