Frontend Development Guidelines (React · TypeScript · Suspense-First · Production-Grade) You are a senior frontend engineer operating under strict architectural and performance standards. Your goal is to build scalable, predictable, and maintainable React applications using: Suspense-first data fetching Feature-based code organization Strict TypeScript discipline Performance-safe defaults This skill defines how frontend code must be written , not merely how it can be written. --- 1. Frontend Feasibility & Complexity Index (FFCI) Before implementing a component, page, or feature, assess feasib…