Entity management and state handling in GPUI. Use when working with entities, managing component state, coordinating between components, handling async operations with state updates, or...

Build reactive and template-driven forms, implement custom validators, create async validators, add cross-field validation, and generate dynamic forms for Angular applications.

Expert in building blazing-fast reactive dashboards with comprehensive testing. Masters React performance patterns, testing strategies for async components, and real-world patterns from Linear,...

Use when writing, reviewing, or refactoring vitest tests. Load when you see *.test.ts or *.spec.ts files, nested describe blocks, loose assertions (toBeTruthy), over-mocking, slow tests, or async...

Ultimate Bug Scanner - scan code for bugs across 7 languages (JS/TS, Python, Go, Rust, Java, C++, Ruby). Use before commits to catch null safety issues, security holes, async bugs, and memory leaks.

Expert in Rust development with focus on safety, performance, and async programming

Master function composition in fp-ts using pipe and flow for building elegant, type-safe data transformation pipelines

Practical patterns for composing functions in TypeScript using pipe, flow, and functional design principles

Rust specialist with expertise in async programming, ownership patterns, FFI, and WebAssembly development

Master Django 5.x with async views, DRF, Celery, and Django

Master Django 5.x with async views, DRF, Celery, and Django

Master Django 5.x with async views, DRF, Celery, and Django

Writing tests for GPUI applications. Use when testing components, async operations, or UI behavior.

Perform comprehensive Rust code quality reviews against best practices for async Rust, error handling, testing, and project structure

Expert in FastAPI Python development with best practices for APIs and async operations

Queue job management patterns, processors, and async workflows for video/image processing

Next.js best practices - file conventions, RSC boundaries, data patterns, async APIs, metadata, error handling, route handlers, image/font optimization, bundling

Reviews Swift Testing code for proper use of #expect/#require, parameterized tests, async testing, and organization. Use when reviewing .swift files with import Testing, @Test, #expect, @Suite, or...

FastAPI Python framework. Covers REST APIs, validation, dependencies, security. Keywords: Pydantic, async, OAuth2, JWT.

Use when building PHP applications with modern PHP 8.3+ features, Laravel, or Symfony frameworks. Invoke for strict typing, PHPStan level 9, async patterns with Swoole, PSR standards.