Async Drop

Rust's Drop destructor cannot run asynchronous code, so releasing async-held resources (connections, locks, buffers) at scope-exit forces awkward manual close/cancel patterns and is a recurring async-concurrency pitfall.

grounded in: Latest trends theme 'Rust and systems-level concurrency: Rust ergonomics and async concurrency pitfalls are a live debate among systems developers', grounded in this system's Rust/Yew/WASM stack (rust