ClaudeCodePlugins

Mobile app UX/UI best practices for smartphone interfaces. Use for designing touch-friendly interfaces, mobile navigation patterns, gesture handling, and optimizing user experience on small screens. Triggers on requests for mobile UX, app design, touch interfaces, mobile patterns, or smartphone UI best practices.

Modern React 19+ development with Server Components, Actions, hooks, TypeScript integration, and performance optimization. Use when building React web applications, implementing Server Components, using Actions for form handling, working with new hooks (use, useActionState, useOptimistic, useFormStatus), setting up React projects with Vite or Next.js, or optimizing React performance.

Responsive web design patterns for mobile-first development. Use for creating fluid layouts, breakpoint systems, responsive typography, flexible grids, and adaptive components. Triggers on requests for responsive layouts, mobile-first CSS, breakpoints, media queries, fluid design, or multi-device support.

Atomic Design methodology for React component architecture. Use for structuring component libraries, organizing UI hierarchies, and creating scalable design systems. Triggers on requests for component organization, design system structure, UI hierarchy, or questions about Atoms/Molecules/Organisms/Templates/Pages.

Design tokens system using CSS Custom Properties for consistent styling. Use for creating color palettes, spacing scales, typography systems, and theming (dark/light mode). Triggers on requests for design tokens, CSS variables, theming, color systems, spacing scales, or consistent styling.

Modern React 19 with TypeScript development. Use for creating React components, hooks, context providers, and applications with strict TypeScript typing. Triggers on requests for React components, functional components, hooks, state management, event handling, or TypeScript interfaces/types for React.

Storybook 8 for React component documentation and testing. Use for creating stories, documenting components with Controls/Actions, visual testing, and MDX documentation. Triggers on requests for Storybook stories, component documentation, visual testing, or interactive component demos.

This skill should be used when the user asks to "create a prompt", "optimize a prompt", "improve this prompt", "engineer a prompt", "prompt engineering best practices", "make this prompt better", "recommend a model", "which model should I use", "best model for", "GPT vs Claude", "Opus vs Sonnet", "Haiku vs Sonnet", "analyze prompt quality", "fix my prompt", "prompt for Claude", "prompt for GPT", or needs help with prompt engineering techniques, model selection, or prompt optimization for any LLM (Claude Opus/Sonnet/Haiku 4.5, GPT 5.1/Codex, Gemini Pro 3.0).

This skill should be used when the user asks about "EARS syntax", "EARS notation", "acceptance criteria format", "SHALL patterns", "formal requirements", "WHEN THE SHALL", or needs guidance on writing testable requirements using EARS (Easy Approach to Requirements Syntax).

Comprehensive .NET development guidelines covering DDD, SOLID principles, ASP.NET Core REST APIs, and C# best practices. Use when working with: (1) C# code files (.cs), (2) .NET project files (.csproj, .sln), (3) ASP.NET Core applications, (4) Domain-Driven Design implementations, (5) REST API development, (6) Entity Framework Core, (7) Unit/integration testing in .NET. Specifically triggers for: classes inheriting AggregateRoot/Entity, services with IRepository dependencies, controllers inheriting ControllerBase, or files in Domain/Application/Infrastructure folders.

Expert guidance for .NET MAUI Blazor Hybrid development combining native mobile/desktop apps with Blazor web UI. Use when working with: (1) .NET MAUI Blazor Hybrid apps, (2) BlazorWebView components, (3) Cross-platform apps sharing Blazor UI, (4) Platform integration in Blazor Hybrid, (5) MVVM with Blazor components, (6) Navigation between MAUI pages and Razor components, (7) Shared Razor Class Libraries (RCL) for MAUI and Web. Applies to any .NET MAUI project using Blazor for UI.