productivity▌

Use this skill when:

Purpose: Build 3D content, AR experiences, and spatial computing apps using RealityKit's Entity-Component-System architecture iOS Version: iOS 13+ (base), iOS 18+ (RealityView on iOS), visionOS 1.0+ Xcode: Xcode 15+

Memory-safe programming patterns for RAII, ownership, smart pointers, and resource management across Rust, C++, and C. \n \n Covers six core memory bug categories (use-after-free, double-free, leaks, buffer overflow, dangling pointers, data races) with language-specific prevention strategies \n Provides RAII patterns in C++ with destructors, lock guards, and transactions; smart pointer guidance (unique_ptr, shared_ptr, weak_ptr) with custom deleters \n Implements Rust ownership, borrowing, lifet

High-performance React Native animations and 2D graphics with Reanimated v4 and Shopify Skia. \n \n Covers gesture-driven interactions, spring/timing transitions, layout animations, and Reanimated CSS transitions/keyframe animations without custom worklets \n Supports Skia Canvas scenes with runtime effects, shader uniforms, path interpolation, and animated drawing primitives \n Includes dev-mode tuning panels with sliders for real-time animation config and shader uniform adjustment \n Provides

I help you create expert-level academic research documents with:

Value-investing analysis tool for Chinese A-shares with stock screening, deep financial analysis, and valuation modeling. \n \n Four core modules: stock screener (filter by PE, ROE, dividend yield, debt ratio), financial analyzer (profitability, growth, cash flow trends), industry comparator (peer benchmarking), and valuation calculator (DCF, DDM, relative valuation methods) \n Automated financial anomaly detection flags suspicious patterns in receivables, cash flow divergence, inventory buildup

Code Components: Custom React components added to canvas. Support addPropertyControls.

Guides competitor research for SEO, content, backlinks, and positioning. Use when planning content, auditing articles, building links, or evaluating market position.

Nest.js framework expert for module architecture, dependency injection, testing, and database integration. \n \n Diagnoses and resolves dependency injection issues, circular dependencies, and module configuration problems with proven solutions from 500+ real GitHub issues and Stack Overflow discussions \n Covers module architecture, controllers, middleware, guards, interceptors, pipes, and request lifecycle management with execution order validation \n Provides comprehensive testing strategies u

Develop production-ready Spring Boot applications with proper annotation-based configuration, dependency injection, REST controllers, JPA data persistence, service layers, and security implementation following Spring conventions.