Rust Language 1 story

Rust Language isolates one part of Programming Languages & Runtimes so articles can explain that layer without drifting into unrelated platform issues. Coverage uses Rust programming language, Rust compiler, Cargo package manager, and Rust ownership model to explain function, setup, support boundaries, and interactions with the rest of the platform. This keeps Rust Language narrower than Programming Languages & Runtimes as a whole while giving readers enough context to make configuration or compatibility decisions and recognize when a problem-specific tag is more appropriate.