Frontend

Use when tracing Konflux builds from image references, finding build logs from artifacts, or verifying source commits for container images - extracts provenance attestations to navigate from images back to builds and source code

This skill provides expert-level guidance for Test-Driven Development (TDD) in VS Code extension development following t-wada methodology. Use when writing tests before implementation, creating comprehensive test suites, implementing Red-Green-Refactor cycles, or improving test coverage for extension components like WebViews, terminal managers, and activation logic.

SvelteKit structure guidance. Use for routing, layouts, error handling, and SSR. Covers file naming (+page vs +layout vs +server), nested layouts, error boundaries, and hydration.

Create a new packet analyzer for Minecraft Bedrock logs. Generates template code, provides documentation links, and guides testing workflow.

Write secure, performant database queries using parameterized statements, proper indexing, and query optimization techniques. Use this skill when writing SQL queries, ORM query methods, or database access code. When implementing data fetching logic that retrieves or updates database records. When optimizing queries to prevent N+1 problems through eager loading or joins. When using WHERE clauses, JOIN operations, or ORDER BY statements. When implementing transactions for related database operations. When working with query builder methods, raw SQL, or ORM query interfaces. When setting query timeouts or implementing query result caching.

Use this skill when creating or evolving design systems for applications. Provides design token structures, component architecture patterns, documentation templates, and accessibility guidelines. Ensures consistent, scalable, and accessible UI design across products.

Vitest test runner for JavaScript and TypeScript. Fast, modern alternative to Jest.Vite-native, ESM support, watch mode, UI mode, coverage, mocking, snapshot testing.Use when setting up tests for Vite projects, migrating from Jest, or needing fast test execution.

Complete backlog implementation in feature-driven development. Read backlog requirements, reference implemented features, design approach, implement code, and document. Use when implementing features, changes, bug fixes, or improvements.

Reference for selecting distinctive typography. Includes font recommendations by vibe, category, archetype, and pairing guidelines for Next.js projects.

Motion-based animation system for Next.js with performance-optimized patterns

Remote functions reactive UI patterns. Use for smooth in-place updates, preventing page jumps, and managing loading states with .current property.

TypeScript type safety including type guards and advanced type system features. **ALWAYS use when writing ANY TypeScript code (frontend AND backend)** to ensure strict type safety, avoid `any` types, and leverage the type system. Examples - "create function", "implement class", "define interface", "type guard", "discriminated union", "type narrowing", "conditional types", "handle unknown types".

Reference guide for portfolio color palettes. Includes quick vibe lookup, full palettes, and application guidelines using the 60-30-10 rule.

This skill provides guidance for using Chrome DevTools MCP for browser debugging and automation. Use when debugging web pages, analyzing performance, inspecting network requests, viewing console messages, or interacting with Chrome DevTools features programmatically.

Use this skill when creating comprehensive testing strategies for applications. Provides test planning templates, coverage targets, test case structures, and guidance for unit, integration, E2E, and performance testing. Ensures robust quality assurance across the development lifecycle.

Create and maintain AgentV YAML evaluation files for testing AI agent performance. Use this skill when creating new eval files, adding eval cases, or configuring custom evaluators (code validators or LLM judges) for agent testing workflows.

Expert guidance for writing proper Svelte 5 code with runes-based reactivity. Use when writing Svelte 5 components, migrating from Svelte 4, or troubleshooting Svelte 5 syntax. Covers $state, $derived, $effect, $props, $bindable, event handling, snippets, TypeScript integration, and common pitfalls.

Design reusable, composable UI components with single responsibility, clear interfaces, and proper state management. Use this skill when creating or refactoring React, Vue, Svelte, or other framework components. When defining component props, interfaces, or APIs. When managing component state or lifting state up to parent components. When building reusable UI elements like buttons, cards, forms, modals, or lists. When implementing component composition patterns. When working with component files (.jsx, .tsx, .vue, .svelte). When documenting component usage or creating component libraries.

Optimize Next.js frontend performance using Lighthouse, bundle analysis, and animation best practices. Use when diagnosing slow pages, optimizing bundle size, or improving Core Web Vitals (LCP, TBT, CLS).

Next-generation test runner for Rust with parallel execution, advanced filtering, and CI integration.Use when running tests, configuring test execution, setting up CI pipelines, or optimizing test performance.Trigger terms: nextest, test runner, parallel tests, test filtering, test performance, flaky tests, CI testing.