Frontend

Implement localStorage persistence in Next.js 14 App Router with SSR-safe patterns. Use when storing data in localStorage, handling hydration errors, implementing state persistence, or creating type-safe storage utilities.

Right-side-of-V verification/validation orchestration for a change or PR.Produces a single Quality Gate Report with evidence covering: code review,security audit, performance regression risk, requirements traceability,acceptance/UAT scenarios, and (when UI changes) visual regression testing.Use when preparing a PR for merge/release, doing a “ready?” check, orenforcing an engineering quality gate.

Implements vector search with Pinecone for semantic similarity and RAG applications. Use when building embeddings-based search, recommendation systems, or retrieval-augmented generation.

Parses legacy requirement documents and generates a traceability matrix linking requirements to tasks, code, and tests. Enforces end-to-end traceability for the migration ensuring every work item maps back to formal documented requirements.

Use this skill when working with Hugo static site development, especially for multilingual sites with complex taxonomies. Triggers include template debugging, taxonomy issues, i18n configuration, page bundles, shortcodes, or any Hugo-specific build/rendering problems. Essential for this Triunghi.md project's Hugo architecture.

Use when extracting specific HTML elements (h1, h2, links, images, etc.), scraping page content, or inspecting DOM structure. Also preferred for JavaScript-rendered content or when WebFetch returns incomplete results.

HTML documentation test

Creating Zustand stores for StickerNest state management. Use when the user asks to create a store, add state management, build a new store, manage global state, persist state, or add new application state. Covers store structure, persist middleware, devtools, selectors, and actions.

Comprehensive UI/UX design system for creating professional web interfaces through structured multi-stage process. Use when users request website designs, landing pages, web apps, UI mockups, design systems, or interface prototypes. Guides through requirements gathering, design system creation from references/screenshots, HTML mockup generation, iterative refinement, and final design delivery. Ideal for "design me a website", "create a landing page", "build a UI for X", or providing design inspiration screenshots/URLs.

Expert guide for implementing NuxtUI v4.1+ - an open-source UI library of 100+ customizable components built with Tailwind CSS and Reka UI. Use when the user mentions NuxtUI components (UButton, UInput, UCard, etc.), asks about implementing UI features, needs component examples, works with forms/layouts/navigation, or requests theme/styling customization. Proactively suggest when building UI to ensure consistent design. (project)

This skill should be used when the user asks to "style with Tailwind", "add CSS", "configure theme", "use @theme", "add custom colors", "implement dark mode", "use container queries", "add responsive design", "use OKLCH colors", or discusses styling, theming, or visual design. Always use the latest Tailwind CSS version and modern patterns.

Use this skill when working with Skeleton UI components in Svelte projects. It provides guidelines for Skeleton's component composition pattern, theme-aware color system, design presets, and layout patterns. Trigger when building UI components, styling elements, creating layouts, or working with Skeleton-specific features in Svelte 5 and SvelteKit 2+ projects.

Guide experienced developers through GREEN phase of TDD cycle - writing minimal implementation to pass failing tests

Configure PrismaClient for serverless (Next.js, Lambda, Vercel) with connection_limit=1 and global singleton pattern.

Define UI tokens, accessibility rules, and consistent component behavior for the Astro frontend, plus empty/loading/error states and light hover/focus transitions. Use when adding or refining frontend UX polish and documentation under frontend/ in this repo.

Convert RxJS observables or decorator-based code to Angular signals. Use when refactoring to signals, converting @Input/@Output to signal functions, or replacing BehaviorSubject with signal().

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Design and refactor React/Tailwind frontends using the project design system. Use this Skill when working on UI components, pages, layouts, or UX improvements and you want distinctive, accessible, non-generic designs that avoid AI slop.

Use when completing tasks, implementing major features, or before merging to verify work meets requirements

Comprehensive integration skill for building sites with SvelteKit 2, Svelte 5, and Tailwind CSS v4. Enhanced with Svelte MCP integration.