libmagic-rs

Project-specific conventions for libmagic-rs (commit style, error patterns, testing layout, tooling)

Security review for Rust systems code. Covers memory safety, buffer handling, unsafe code, input validation, resource exhaustion, and supply chain security.

Rust library API design patterns including builder pattern, error handling, trait design, type safety, and CLI design with clap.

Suggests manual context compaction at logical intervals to preserve context through task phases rather than arbitrary auto-compaction.

Enforces test-driven development for Rust. Write tests first with cargo test/nextest, implement to pass, refactor, verify >85% coverage with cargo llvm-cov.

Comprehensive verification for Rust projects. Runs cargo check, clippy, fmt, tests, coverage, and security audit in sequence.