skills

Create, update, refactor, audit, or align repository AGENTS.md guidance from repository evidence without adding language, tool, or dependency recommendations.

Guide for writing, refactoring, reviewing, optimizing, and documenting idiomatic Rust code on a Rust 1.97 stable baseline.

Design, patch, audit, or align Rust tests with evidence-based guidance for unit tests, integration/e2e tests, doctests, insta snapshots, compile-fail/UI tests, golden files, fixtures, property tests, fuzz tests, async/concurrency tests, unsafe-code validation, Criterion benchmarks, Cargo test semantics, Rust 1.97 test idioms, feature/target/MSRV matrices, flaky-test triage, coverage/mutation evidence, and focused validation.

Apply forward-only editing, documentation, and review rules for Rust crates or workspaces whose package or workspace version is below 1.0. Use when editing, reviewing, or documenting pre-1.0 Rust APIs, READMEs, AGENTS.md guidance, examples, release notes, migration text, or workflow docs: omit durable absent-surface negative prose such as "does not currently..." and avoid backward/legacy compatibility obligations, old API preservation, aliases, wrappers, or shims unless explicit repository policy or the user requires them.