Internal: docs/DESIGN_PRINCIPLES.md opens with "Shared components at a glance", a table of every shared part of a member page (bands, headings, rows, drawers, menus, settings controls, forms, toasts, tabs, the image picker and the rest), the class, partial or script each is written with, and the section that holds its rules.
Repository: an index of the shared interface components
Internal: the design principles open with a table of every shared component, what it is written with and where its rules are.