Accounts list with paginated table, search, sort. Account detail page with
tabs for members, payment methods, tax exemptions, and processor links.
All sub-entities have create/edit dialogs and delete actions. Forms use
shared Zod schemas via react-hook-form.
Sets up the admin frontend with login page, auth guard, API client, Zustand
auth store, and all shadcn/ui components. Vite proxies /v1 to backend in dev.
