What it does

This skill automates the careful synchronization of Rust source crates (hotpath and hotpath-macros) with their corresponding meta crates (hotpath-meta and hotpath-macros-meta). Rather than naive bulk copying, it prescribes extracting diffs from recent commits and applying equivalent, semantic edits to the meta files while preserving meta-specific names, feature flags, and removing self-instrumentation. The goal is compileable meta crates that mirror behavior changes without introducing incorrect naming or instrumentation artifacts.

When to use it

Use this skill when the main crates have had recent changes (commits) that need to be reflected in the meta crates. It is triggered for code syncs affecting src/ files in the hotpath or hotpath-macros crates across a given commit range. Do NOT use it for Cargo.toml or unrelated config changes.

What's included

Scripts: none embedded, but prescribes git diff and cargo check commands as part of the workflow.
References: guidance on feature flags, env var mappings, and rules for preserving meta-specific naming.
Instructions: a step-by-step checklist — identify changed files, compute diffs, edit corresponding meta files semantically (no wholesale sed), then run cargo check for multiple feature sets to verify compilation.