Frontend

Comprehensive toolkit for interacting with Hugging Face Spaces. Use this skill when working with Hugging Face Spaces - listing spaces, retrieving space information, managing space runtime (restart/pause), checking space status, or any other Space-related operations. Requires Hugging Face access token stored in HF_TOKEN or HUGGINGFACE_TOKEN environment variable for write operations.

Standardize Next.js App Router API route implementations under src/app/api/** (auth/session, input validation, Drizzle queries, rate limiting, response shape). Use when creating or refactoring API routes in this repo.

Creates unique, production-grade frontend interfaces with exceptional design quality. Use when user asks to build web components, pages, materials, posters, or applications (e.g., websites, landing pages, dashboards, React components, HTML/CSS layouts, or styling/beautifying any web UI). Generates creative, polished code and UI designs that avoid mediocre AI aesthetics.

This skill should be used when the user asks to "implement", "build", "create", "add feature", "develop", "design", "architect", "plan", "structure", "refactor", "improve", "optimize", "review", "fix", "solve", "handle", "debug", or discusses implementation strategies. Apply cognitive load principles to ALL development work as a cornerstone principle.

Generates sequences of high-leverage tasks that increase understanding and improve the code. Use when:- "what should I work on next?" - suggests prioritized tasks- "create a plan for this repo" - generates a curriculum- "what's the roadmap?" - shows curriculum overview- "help me onboard to this codebase" - creates learning tasks- "plan a refactor" - structures improvement work- "prioritize these features" - organizes work into tracks- "make an onboarding plan" - creates a learning path- "create a learning path for this repo" - sequences learning tasks- "roadmap this refactor" - plans improvement work- "write the curriculum to disk" - persists plan artifacts

CSS, SCSS, and styling conventions. Use when writing, reviewing, or debugging styles and layouts.

Implements zero-runtime CSS using vanilla-extract with type-safe styles, themes, recipes, and sprinkles. Use when wanting type-safe CSS, static extraction at build time, or building design system utilities.

Utility-first CSS framework for rapidly building custom user interfaces

HestAI workflow phase execution including D0→D1→D2→D3→B0→B1→B2→B3→B4→B5 sequence, agent assignments per phase, phase transition validation, and deliverable requirements. Use when starting new phase, determining next steps, or validating phase completion.

Comprehensive guide for testing Vue 3 applications with Playwright (2025). This skill should be used when writing end-to-end tests or component tests for Vue apps, testing Vue Router navigation, reactive state changes, authentication flows, or setting up Playwright in Vue projects.

Model dependencies using Effect-style Context, Layer, and Service patterns with compile-time safety. Use when designing DI systems, modeling environments, or building Effect-TS applications.

Use when styling or laying out SyncFusion components. Critical for understanding what CSS classes exist vs don't exist. Prevents using fake utility classes that break layout. Auto-activates when working with SF component styling, layout, spacing, colors, or icons.

Frontend React/Vite/PWA do Sr Cardoso. Use quando editar paginas, componentes, hooks, fluxo de agendamento, painel admin, consumo de API REST e UX mobile-first.

Model routing configuration templates and strategies for cost optimization, speed optimization, quality optimization, and intelligent fallback chains. Use when building AI applications with OpenRouter, implementing model routing strategies, optimizing API costs, setting up fallback chains, implementing quality-based routing, or when user mentions model routing, cost optimization, fallback strategies, model selection, intelligent routing, or dynamic model switching.

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.

Validate feature implementations against DevPortfolio Clean Architecture standards and coding guidelines. Use when asked to review code, validate implementations, check coding standards, or assess code quality. Generates comprehensive validation reports with compliance scoring, layer-by-layer analysis, and prioritized action items.

Use PROACTIVELY when setting up end-to-end testing, debugging UI issues, creating visual regression suites, or automating browser testing. Uses Playwright with LLM-powered visual analysis, screenshot capture, and fix recommendations. Zero-setup for React, Next.js, Vue, Node.js, and static sites. Not for unit testing, API-only testing, or mobile native apps.

Build stateful AI agents and agentic workflows with LangGraph in Python. Covers tool-using agents with LLM-tool loops, branching workflows, conversation memory, human-in-the-loop oversight, and production monitoring. Use when: (1) building agents that use tools and loop until task complete, (2) creating multi-step workflows with conditional branches, (3) adding persistence/memory across turns with checkpointers, (4) implementing human approval with interrupt(), (5) debugging via time-travel or LangSmith. Covers StateGraph, nodes, edges, add_conditional_edges, MessagesState, thread_id, Command objects, and ToolMessage handling. Examples include chatbots, calculator agents, and structured workflows.

HTML 템플릿과 CSS 스타일 수정 가이드입니다. 템플릿 스타일 변경, 다크모드 수정, CSS 작업이 필요할 때 사용합니다.

Review code changes for correctness, security, performance, and maintainability. Use for PR reviews,code audits, pre-merge checks, or quality validation of Laravel + React code. EXCLUSIVE to reviewer agent.