React Data Provider

Implement data fetching and state management in React SPA (React Router v7 Framework Mode, ssr: false) projects following Sellernote conventions.

React-only SPA characteristics: No Server Components, Server Actions, or revalidatePath/Tag. All runtime data fetching is client-side via TanStack Query. Mutations use useMutation + REST API. The framework runs on Vite with React Router v7 in SPA mode.

Convention Loading

Read the following reference files before starting work:

1. Always read first (core rules):
   • references/STATE_CONVENTION.md — State classification, TanStack Query patterns, Zustand patterns, nuqs URL state
   • references/FRONTEND_CONVENTION.md — Component design, import rules, tech stack