Tracing::Instrument

Annotation marking a method for instrumentation.

Ported from upstream #[tracing::instrument].

Usage: class MyService @[Tracing::Instrument] def process(id : Int32) Tracing.instrument("process", id: id) do # work end end end

NOTE: Crystal does not support proc macros like Rust's #[instrument]. Use Tracing.instrument(name, **fields) { ... } for automatic span wrapping of blocks. The annotation serves as documentation and may be used by future compile-time tooling.