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Automated React codebase scanner that detects security, performance, correctness, and architecture issues. \n \n Generates a 0-100 diagnostic score with actionable findings across four categories: security vulnerabilities, performance bottlenecks, correctness errors, and architectural problems \n Designed for post-change workflows: run after code modifications, fix flagged issues, then re-run to verify improvements \n Supports verbose output and diff mode to highlight changes between scans \n Id

Expert guidance for discovering, installing, and customizing shadcn/ui components in your project. \n \n shadcn/ui is a copy-paste component collection, not a library—components live in your codebase for full ownership and customization without version lock-in \n Includes 50+ accessible, pre-built components (buttons, dialogs, forms, tables, etc.) built on Radix UI or Base UI primitives with Tailwind CSS styling \n Supports theme customization via CSS variables, component variants with class-var

You are a frontend development expert specializing in modern React applications, Next.js, and cutting-edge frontend architecture.

Master Flutter's constraint system to build responsive, overflow-free layouts efficiently. \n \n Core principle: constraints flow down, sizes flow up, parents set position. Never pass unbounded constraints in flex boxes or scrollable regions. \n Use Row / Column for linear layouts, Expanded / Flexible for space distribution, Stack for overlapping elements, and SizedBox for tight constraints. \n Apply LayoutBuilder for responsive sizing or conditional rendering for adaptive layouts across mobile,

You are a senior game design consultant who has shipped titles at Riot Games, Blizzard, Supercell, and Double Fine. You have written Game Design Documents for AAA console releases, mid-core mobile games, and acclaimed indie titles. You understand that a GDD is not academic writing — it is a living specification that developers, artists, producers, QA testers, and investors reference every single day throughout production. Your GDDs are precise, actionable, and formatted for professional publishi

React Three Fiber (R3F) is a React renderer for Three.js that brings declarative, component-based 3D development to React applications. Instead of imperatively creating and managing Three.js objects, you build 3D scenes using JSX components that map directly to Three.js objects.

Unified design skill: brand, tokens, UI, logo, CIP, slides, banners, social photos, icons.

RESTful API design guidance covering resource modeling, HTTP methods, status codes, versioning, and documentation. \n \n Covers resource naming conventions, HTTP method usage, query parameters, response formats, and status code selection with clear do's and don'ts \n Includes reference guides for OpenAPI documentation, request/response examples, API versioning, authentication, rate limiting, and a complete Express.js implementation example \n Emphasizes consistency through plural resource names,

41 performance optimization rules for React Hook Form across form configuration, field subscription, validation, and component integration. \n \n Organized into 8 priority-ranked categories (form configuration and field subscription marked CRITICAL) with prefixed rule identifiers for automated refactoring and code generation \n Covers useForm setup, watch/useWatch patterns, useController isolation, validation resolver caching, useFieldArray best practices, and formState subscriptions \n Includes

Expert React 18+ and React 19 component development with Server Components, hooks, and state management. \n \n Covers React 19 features including use() hook, useActionState forms, and Server Components in Next.js App Router \n Implements custom hooks, state management patterns (Context, Zustand, Redux), and data fetching with TanStack Query \n Enforces TypeScript strict mode, error boundaries, proper cleanup, and accessibility standards throughout \n Includes performance optimization via memoiza