practices▌

Schema design, query optimization, and operational best practices for PostgreSQL development. \n \n Covers schema design with native data types (UUID, JSONB, ARRAY, NUMERIC), primary/foreign keys, constraints, and table partitioning strategies for large datasets \n Indexing guidance including B-tree, GIN, GiST, and BRIN index types with examples for JSONB queries, partial indexes, and index maintenance via ANALYZE and monitoring \n Query optimization techniques using EXPLAIN ANALYZE, CTEs with m

Domain-specific best practices and patterns for building videos with Remotion and React. \n \n Covers 28 rule files spanning animations, assets, audio, compositions, captions, charts, 3D content, and transitions \n Includes utilities for media metadata extraction (video/audio duration, dimensions, frame extraction) via Mediabunny \n Provides patterns for text measurement, DOM node sizing, font loading, TailwindCSS integration, and timing/easing functions \n Addresses common workflows like captio

Use this skills whenever you are dealing with Remotion code to obtain the domain-specific knowledge.

Angular 21 development with signals, standalone components, reactive patterns, and strict TypeScript typing. \n \n Use standalone components with ChangeDetectionStrategy.OnPush , input() / output() functions, and computed() for derived state instead of decorators and ngClass / ngStyle \n Manage async data with resource() for signal-based fetching, handling loading/error states via hasValue() and status checks \n Build templates with native control flow ( @if , @for , @switch ), async pipes, and

45 performance optimization rules for React and Next.js, organized by impact from critical waterfalls and bundle size down to advanced patterns. \n \n Covers 8 rule categories prioritized by performance impact: eliminating waterfalls, bundle optimization, server-side performance, client-side data fetching, re-render optimization, rendering performance, JavaScript performance, and advanced patterns \n Each rule includes explanations, incorrect/correct code examples, and context to guide automated

Styling guidelines for the Mastra Playground UI, containing 5 rules across 3 categories. Rules are prioritized by impact to guide automated refactoring and code generation. These rules ensure design system consistency, prevent token drift, and maintain component library integrity.

Laravel Eloquent query optimization and relationship management patterns with N+1 prevention. \n \n Eager load relationships with with() and use withCount() for efficient aggregations instead of triggering additional queries in loops \n Select only needed columns at query time and define return types on relationship methods for better IDE support and clarity \n Use query scopes to encapsulate reusable filtering logic and leverage database-level operations ( update() , increment() ) instead of lo

Structured guidance for designing, executing, and analyzing content experiments to improve conversion and engagement. \n \n Covers hypothesis frameworks, metric selection, sample size calculation, and statistical significance testing across A/B and multivariate experiments \n Includes detailed resources on p-values, confidence intervals, power analysis, and Bayesian methods for interpreting results \n Provides CMS integration patterns for managing variants at the field level and connecting exter

Language and framework-specific security reviews with actionable vulnerability detection and fix guidance. \n \n Supports Python, JavaScript/TypeScript, and Go with framework-specific best practices loaded from a references directory \n Operates in three modes: secure-by-default code generation, passive vulnerability detection during development, and full security audit reports with severity prioritization \n Generates detailed markdown reports with line-number references, impact statements, and

Comprehensive Vue.js testing guidance covering unit, component, and end-to-end testing strategies. \n \n Addresses 11 common testing challenges including async handling, composable testing, Pinia store setup, Suspense components, and Teleport queries \n Recommends Vitest for unit and component testing infrastructure, with Playwright as the preferred E2E framework \n Covers black-box component testing patterns to reduce brittleness during refactoring, async/await synchronization, and snapshot tes