design-engineer
Build interfaces with intention. Remember decisions across sessions. Maintain systematic consistency. For dashboards, apps, tools — not marketing sites.
Discover Databases skills, compare source repositories and read the instructions for each workflow.
Build interfaces with intention. Remember decisions across sessions. Maintain systematic consistency. For dashboards, apps, tools — not marketing sites.
Clean architecture patterns for the 3SC widget host. Defines layer boundaries, dependency rules, composition root patterns, and abstraction strategies.
Use this skill when implementing new features or debugging the core "For You" pipeline. The system has shifted from legacy heuristics toward a unified **Rust-based** pipeline powered by the **Phoenix** transfor...
Resilience patterns for the 3SC widget host. Covers retry policies, circuit breakers, timeouts, fallbacks, and graceful degradation for external dependencies.
Common patterns, structures, and best practices for 42 School projects. Use when starting projects, creating Makefiles, or structuring code.
In-memory caching patterns for the 3SC widget host. Covers cache strategies, invalidation, TTL policies, and when to cache vs when to fetch.
TypeScript strict patterns and best practices. Trigger: When writing TypeScript code - types, interfaces, generics.
Platform/Language agnostic API delivery and correctness auditor. Use when project contains API endpoints to verify contract alignment, endpoint behavior, and test coverage.
Structured escalation with evidence. Surfaces blocking issues for human decision, referencing the Manifest hierarchy.
独創的で本格的なフロントエンドインターフェースを高いデザイン品質で作成します。ユーザーがWebコンポーネント、ページ、アーティファクト、ポスター、またはアプリケーション(ウェブサイト、ランディングページ、ダッシュ...
新規 App 基盤構築スキル。 FastAPI + PostgreSQL + Redis + Alembic + React の完全な App 骨架を自動生成。 ユーザーの要件に基づいてカスタマイズ可能。
Comprehensive guide for implementing Next.js 16 proxy pattern for authentication and route protection. Covers the new proxy.ts API, protected route patterns, authentication middleware, and best practices for se...
CRITICAL: Use this skill when creating/debugging React UI components, Radix UI, forms, modals, or drag & drop. AUTO-ACTIVATE when user mentions (FR/EN): - select, Select, SelectValue, SelectItem, Radix - modal,...
Comprehensive patterns and best practices for Next.js 16 Server Actions including mutations, error handling, revalidation, type safety, and form handling. Use when user needs to create, modify, or debug server...
Diseñador Frontend Pro para YuKyuDATA - Crea interfaces distintivas y production-ready. Especializado en vanilla JS ES6+, CSS moderno, Chart.js, ApexCharts, y arquitectura frontend modular. Evita diseños genéri...
Frontend development using Vite + React + shadcn/ui + Tailwind CSS + React Router v7. Use when creating new frontend projects, adding UI components, implementing routing, styling with Tailwind, or working with...
TanStack Start SSR framework. Use for server functions, API routes, SSR modes, middleware chains, server-only code
Backend development using Fastify + TypeScript. Use when creating new backend APIs, adding routes, implementing services, working with plugins, or configuring environment variables.
Create forms with TanStack Form and React Aria Components. Use when building forms, implementing validation, handling form submissions, or creating reusable form fields.
Complete flow examples combining TanStack Form, Query, Router, and Start. Use when implementing end-to-end features that span multiple systems.
Next.js 15 App Router patterns. Trigger: When working with Next.js - routing, Server Actions, data fetching.
Sets up tRPC queries and mutations in web components
Sets up tRPC queries and mutations in web components with proper typing, React Query integration, and error handling.
Generates React Native components following GradientPeak mobile patterns with NativeWind styling, React Native Reusables, and proper hooks.
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