claude-code-harness

Use when creating banner images for Eduwill (에듀윌) or similar Korean education companies. Triggers on keywords like 에듀윌, 배너, banner, 교육 배너, 공인중개사, 합격, eduwill. Uses Replicate Nano Banana Pro (google/nano-banana-pro) with reference images for high-quality AI-generated marketing banners. Also applies when user provides reference banner images and wants similar style banners generated.

FastAPI backend development guidelines for Python async applications. Domain-Driven Design with FastAPI routers, SQLModel/SQLAlchemy ORM, repository pattern, service layer, async/await patterns, Pydantic validation, and error handling. Use when creating APIs, routes, services, repositories, or working with backend code.

Generate Mermaid diagrams from user requirements. Supports flowcharts, sequence diagrams, class diagrams, ER diagrams, Gantt charts, and 18 more diagram types.

Next.js 15 frontend development guidelines for YGS (영영사) React 19/TypeScript application. Modern patterns including App Router, Server/Client Components, shadcn/ui components, Tailwind CSS 4, multi-method authentication (Firebase/Kakao/JWT), admin dashboard patterns, and Korean localization. Use when creating components, pages, API routes, fetching data, styling, or working with frontend code.

Add Sentry v8 error tracking and performance monitoring to your project services. Use this skill when adding error handling, creating new controllers, instrumenting cron jobs, or tracking database performance. ALL ERRORS MUST BE CAPTURED TO SENTRY - no exceptions.