Frontend State Management

Conducts comprehensive frontend design reviews covering UI/UX design quality, design system validation, accessibility compliance, responsive design patterns, component library architecture, and visual design consistency. Evaluates design specifications, Figma/Sketch files, design tokens, interaction patterns, and user experience flows. Identifies usability issues, accessibility violations, design system deviations, and provides actionable recommendations for improvement. Produces detailed design review reports with severity-rated findings, visual examples, and implementation guidelines. Use when reviewing frontend designs, validating design systems, ensuring accessibility compliance, evaluating component libraries, assessing responsive designs, or when users mention design review, UI/UX review, Figma review, design system validation, accessibility audit, or frontend design quality.

Generate correct shadcn/Tailwind layouts by applying CSS mental models. This skill should be used when the user asks to 'create a shadcn layout', 'fix layout issues', 'debug CSS height problems', 'make scrolling work', or has issues with Tailwind flex/grid. Keywords: shadcn, Tailwind, layout, CSS, flex, grid, height, scroll, overflow.

Scaffolds a production-ready Next.js turborepo end to end. Runs create-next-app with TypeScript 7, Tailwind CSS, React Compiler, and Cache Components, sets up shadcn/ui with Blode UI components from the Blode registry, blode-icons-react icons, Agentation, and Ultracite (Oxlint, Oxfmt, Lefthook), converts the app into a turborepo, then creates the GitHub repo and deploys to Vercel with a pre-launch checklist. Use when creating a brand-new Next.js app, bootstrapping a turborepo, scaffolding a web project, starting a new repo for a website or marketing site, or asking "create a Next.js project", "set up a turborepo", or "start a new web app". For a TypeScript CLI or npm package, use scaffold-cli. For folder structure and module contracts in an existing app, use codebase-architecture. For building a page inside an existing app, visual direction, palettes, and theming, use ui-design.

Tailwind CSS responsive design and dark mode patterns (2025-2026). PROACTIVELY activate for: (1) dark mode setup (class-based vs media-query, dark: variant), (2) toggling dark mode at runtime (data-theme, html.dark), (3) prefers-color-scheme handling, (4) per-component dark variants, (5) responsive design with dark mode (combining sm:dark:bg-*), (6) system / light / dark / high-contrast theming, (7) CSS color-scheme property, (8) avoiding flash of unstyled content (FOUC) in dark mode, (9) dark-mode color tokens via @theme. Provides: dark-mode toggle implementation, FOUC prevention pattern, color-token templates, and system-preference detection.

Next.js 16 App Router performance, caching, server components, server actions, routing, and codebase-hygiene best practices — plus a category-major review/refactor algorithm with codebase-level (remove/dedup/reuse) findings. This skill should be used when writing Next.js 16 App Router code, configuring caching with 'use cache', building Server Components, setting up parallel/intercepting routes, configuring next.config.js OR proxy.ts, OR auditing/refactoring a Next.js codebase (single file or whole repo). This skill does NOT cover generic React 19 patterns (use react skill) or non-Next.js server rendering.

Senior UI/UX Engineer. Architect digital interfaces overriding default LLM biases. Enforces metric-based rules, strict component architecture, CSS hardware acceleration, and balanced design engineering.