Validates animation durations, enforces typography scale, checks component accessibility, and prevents layout anti-patterns in Tailwind CSS projects. Use when building UI components, reviewing CSS utilities, or enforcing design consistency.
Making changes to the app's functionality.
Create Criterion benchmarks with proper group macros and configuration. Use when writing benchmarks, creating benchmark groups, using criterion_group! and criterion_main! macros, setting throughput, or benchmarking multiple implementations. Handles benchmark groups, throughput metrics, conditional compilation, and proper black_box usage.
Read and parse GitHub issues; extract title, body, labels, checklists, and acceptance criteria to support triage and delegation.
Apply cognitive and perception-based UI principles from Laws of UX. Use when evaluating layout, interaction design, target size and distance, choice count, information grouping, memory load, or response time. Cites specific laws (e.g. Fitts's Law, Hick's Law) to justify design decisions or suggest improvements.
Work with async/await, futures, and asynchronous Rust code. Use when writing async functions, working with tokio or async-std, understanding futures, or implementing async traits. Handles async/await syntax, futures, executors, pinning, Send/Sync bounds, and async patterns.
Use std::hint::black_box correctly in benchmarks and tests. Use when writing benchmarks, preventing compiler optimizations, or ensuring code actually executes. Handles proper placement, when to use it, and common patterns for benchmarking.
Work with Cargo commands, workspace configuration, dependency management, and build systems. Use when managing dependencies, configuring workspaces, building projects, running tests, or publishing crates. Handles Cargo.toml configuration, workspace setup, dependency resolution, and build commands.