Frontend

Maestro E2E testing patterns for React Native. Use when implementing end-to-end tests.

Extract technology-free domain model from codebase. Produces a pure business-language specification that any stakeholder can understand. Use for: understand legacy code, document business logic, domain modeling, business requirements extraction, what does this code do, explain codebase to non-technical stakeholders.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.

Ensure iOS/iPadOS-friendly form inputs (keyboard type, inputmode, autocomplete, autocapitalize/autocorrect, enterkeyhint) when editing or reviewing UI forms in web apps. Use when adding or modifying form fields (Svelte/HTML/TSX/etc.), auditing form UX, or fixing mobile Safari keyboard issues.

Use when implementing features, fixing bugs, or making code changes. Ensures scope is defined before coding, then enforces RED → GREEN → REFACTOR test discipline. Triggers: 'implement', 'add', 'build', 'create', 'fix', 'change', 'feature', 'bug'.

Generate and maintain DeepWiki-style documentation for code repositories. Use when the user asks to generate docs for a repo, create full documentation, build a wiki for a codebase, create DeepWiki-style docs, sync docs with code, update documentation, refresh the wiki, or bring docs up to date. Creates structured markdown docs (ARCHITECTURE, INTERFACES, DEVELOPER_GUIDE, INDEX, concepts, module READMEs) without modifying source code.

Control interactive terminal processes via tmux - launch CLI applications, send input, capture output, wait for completion. This skill should be used when tasks require interactive debugging (pdb, node inspect), REPL exploration, long-running observable processes, or spawning another Claude instance for independent analysis or second opinions.

Performs a fast, focused code review checking for common issues, security vulnerabilities, and best practices without over-engineering. Optimized for cost-efficiency by targeting specific concerns rather than broad exploration.

This skill should be used when working with LaminDB, an open-source data framework for biology that makes data queryable, traceable, reproducible, and FAIR. Use when managing biological datasets (scRNA-seq, spatial, flow cytometry, etc.), tracking computational workflows, curating and validating data with biological ontologies, building data lakehouses, or ensuring data lineage and reproducibility in biological research. Covers data management, annotation, ontologies (genes, cell types, diseases, tissues), schema validation, integrations with workflow managers (Nextflow, Snakemake) and MLOps platforms (W&B, MLflow), and deployment strategies.

Understand and apply psychological concepts to create superior user experiences (UX) in frontend design.

Create beautiful, accessible user interfaces with shadcn/ui components (built on Radix UI + Tailwind), Tailwind CSS utility-first styling, and canvas-based visual designs. Use when building user interfaces, implementing design systems, creating responsive layouts, adding accessible components (dialogs, dropdowns, forms, tables), customizing themes and colors, implementing dark mode, generating visual designs and posters, or establishing consistent styling patterns across applications.

Guide d'installation Astro + Tailwind sur Windows. Covers Node.js setup, pnpm, project creation, common Windows issues, and troubleshooting.

Fix React Rules of Hooks violations - conditional calls, hooks in loops/callbacks/classes

Follow project-wide development conventions for file organization, version control, documentation, and dependency management. Use this skill when organizing project directories and files, writing README documentation, creating commit messages, working with git branches, managing pull requests, configuring environment variables, handling secrets and API keys, managing project dependencies, setting up feature flags, maintaining changelogs, defining testing requirements, establishing code review processes, or structuring the overall project architecture. Apply this skill when setting up new projects, refactoring project structure, working with version control, managing configuration files, or ensuring the project follows consistent organizational patterns and best practices.

HTMLCSStoImage API via curl. Use this skill to generate images from HTML/CSS or capture screenshots of web pages.

Next.js performance optimizations including next/image, next/font, dynamic imports, caching strategies, and bundle optimization. Use when optimizing Next.js apps for speed or Core Web Vitals.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Apply Command Query Responsibility Segregation (CQRS) and Event Sourcing (ES) for collaboration-heavy domains that require strong auditability and independent scaling of reads and writes.

Guide for implementing Better Auth - a framework-agnostic authentication and authorization framework for TypeScript. Use when adding authentication features like email/password, OAuth, 2FA, passkeys, or advanced auth functionality to applications.

Advise on choosing between Skills, Commands, Subagents, and Hooks for Claude Code. Analyze user requirements and recommend the appropriate artifact type with justification. Use when user asks "should I use a skill or command", "what artifact type", "skill vs command", or describes a workflow needing automation.