productivity▌

Implement Progressive Web App features including service workers, caching strategies, offline support, and installation prompts for React and Svelte applications.

TanStack Query best practices for optimized data fetching, caching, mutations, and server state management in React. \n \n Covers 32 rules across 10 categories: query keys, caching strategies, mutations, error handling, prefetching, infinite queries, SSR integration, parallel queries, performance optimization, and offline support \n Each rule includes explanation, anti-patterns, recommended implementations, and contextual guidance for when to apply \n Prioritized by impact: critical rules preven

IF A SKILL APPLIES TO YOUR TASK, YOU DO NOT HAVE A CHOICE. YOU MUST USE IT.

This skill transforms a user's scattered multimodal assets (images, videos, audio) and ambiguous creative intent into a structured, executable prompt for the Seedance 2.0 video generation model. It acts as an expert prompt engineer, ensuring the highest quality output from the underlying model.

Modern PHP development with strict typing, enterprise patterns, and framework expertise across Laravel and Symfony. \n \n Enforces PHP 8.3+ strict types, PSR-12 standards, and PHPStan level 9 static analysis on all code before delivery \n Scaffolds typed domain models, DTOs, value objects, services, repositories, and controllers with full dependency injection \n Generates PHPUnit and Pest tests with 80%+ coverage requirements; runs both test suites and static analysis as mandatory verification g

$21

Expert quantitative finance, algorithmic trading, and financial data analysis using Python scientific computing. \n \n Covers algorithmic trading strategy development, backtesting frameworks, and signal generation with walk-forward validation to prevent overfitting \n Implements risk models including VaR, CVaR, Greeks calculations, and Monte Carlo simulations for derivatives pricing \n Provides portfolio optimization techniques (mean-variance, Black-Litterman, risk parity) with transaction cost

Expert mobile application development across iOS, Android, React Native, and Flutter.

React charting library built on top of D3 for composable, declarative data visualization.

Use PptxGenJS for slide authoring. Do not use python-pptx for deck generation unless the task is inspection-only; keep editable output in JavaScript and deliver both the .pptx and the source .js.