Development

Standards for Declarative UI, State Hoisting, and Performance

Testing patterns for Composable Svelte. Use when writing tests, using TestStore, mocking dependencies, or testing reducers and effects. Covers the send/receive pattern, mock implementations, testing composition strategies, and testing best practices.

Server-side rendering patterns for Composable Svelte. Use when implementing SSR, hydration, server rendering, isomorphic code, or working with meta tags and SEO. Covers renderToHTML, hydrateStore, server-side routing, state serialization, and avoiding common SSR pitfalls.

Navigation and animation patterns for Composable Svelte. Use when implementing modals, sheets, drawers, alerts, navigation flows, or component lifecycle animations. Covers state-driven navigation, PresentationState, parent observation, URL routing, and Motion One integration.

Audio, video, and voice components for Composable Svelte. Use when implementing audio players, video embeds, or voice input. Covers AudioPlayer (Web Audio API), VideoEmbed (YouTube/Vimeo/Twitch), and VoiceInput (MediaRecorder) from @composable-svelte/media package.

Internationalization (i18n) system for Composable Svelte. Use when implementing multi-language support, translations, date/number formatting, locale detection, or localizing applications. Covers translation loading, ICU MessageFormat, formatters (dates/numbers/currency), locale detection, SSR integration, and the i18n reducer.

3D graphics and WebGPU/WebGL rendering with Composable Svelte. Use when building 3D scenes, working with cameras, lights, meshes, materials, or implementing WebGPU/WebGL graphics. Covers Scene, Camera, Light, Mesh components, geometry types (box, sphere, cylinder, torus, plane), material properties, and state-driven 3D rendering.

Form patterns and validation for Composable Svelte. Use when building forms, validating user input, or integrating Zod schemas. Covers FormConfig, createFormReducer, field-level validation, async validation, form state management, and reactive wrapper patterns.

Production deployment patterns for Composable Svelte SSR applications. Use when deploying to Fly.io, Docker, or any cloud platform. Covers multi-stage Docker builds, Fly.io configuration, security hardening, performance optimization, and integration with Composable Rust backends.

UI component library reference for Composable Svelte. Use when implementing designs, choosing components, styling layouts, or working with shadcn-svelte components. Covers component props, variants, accessibility patterns, visual composition, and when to use which component. For specialized components see composable-svelte-graphics (3D), composable-svelte-code (editors/media), composable-svelte-charts (visualization), composable-svelte-maps (geospatial).

Code editing, syntax highlighting, and visual programming for Composable Svelte. Use when implementing code editors, syntax highlighting, or node-based visual programming. Covers CodeEditor (CodeMirror), CodeHighlight (Prism), and NodeCanvas (SvelteFlow) from @composable-svelte/code package.

Streaming chat and collaborative features for Composable Svelte. Use when implementing LLM chat interfaces, real-time messaging, or collaborative features. Covers StreamingChat (transport-agnostic), presence tracking, typing indicators, and WebSocket integration from @composable-svelte/chat package.

Data visualization and chart components for Composable Svelte. Use when creating charts, graphs, or data visualizations. Covers chart types (scatter, line, bar, area, histogram), data binding, state-driven updates, interactive features (zoom, brush, tooltips), and responsive design from @composable-svelte/charts package built with Observable Plot and D3.

Expert knowledge for building web APIs and real-time applications with Composable Rust. Use when building HTTP REST APIs with Axum, implementing WebSocket for real-time updates, working with authentication (magic link, OAuth, passkeys), setting up email providers (SMTP, Console), designing API routes or request handlers, or questions about web integration and real-time communication.

Expert knowledge for building event-driven systems with Composable Rust framework. Use when implementing reducers, designing state machines, working with effects, creating environment traits for dependency injection, building stores, or answering questions about core architectural patterns and the unidirectional data flow model.

Standards for Standalone Components, Signals inputs, and Control Flow.

Guidance for writing `@kubb/react-fabric` components and generators (React-based and function-based).

Base skill for working with electronic components in this library. Use when adding new component types, manufacturer handlers, or working with MPN (Manufacturer Part Number) operations, BOM entries, or component classification.

Best practices for wrapping shadcn/ui components. Apply when creating 8-bit styled variants of existing shadcn/ui components.

Component variant system with Glass, Outline, and Flat styles. Use when creating multi-style components, variant props, or style switching.

동구라미 앱 컴포넌트 라이브러리 사용 가이드. UI 컴포넌트 구현, 스타일 커스터마이징, 위젯 활용법 안내. Keywords: component, widget, ui, style, button, dialog, text field, chip, app bar, drawer

Use this skill when users mention "component usage", "where is this component used", "deprecate component", "migration impact", "component analytics", or want to track and analyze component usage across the codebase with deprecation planning and migration impact analysis.

Orchestrates the migration of legacy MUI or generic components to the Northcote Curio design system. Specializes in "Refactor-on-Port" logic, ensuring visual transformation while preserving business state and behavioral integrity.

Use this skill to create or modify tests for a component.