Setup Rust Skills

Configuration is a promise the tooling keeps. Every other skill in this set reads the lint level and the recorded posture before running a verification step, and this skill is the one that writes both. It runs only when the user invokes it — it drops files into the repo, and the model never decides that on its own. The whole run is governed by one rule: read before writing, and never overwrite a deliberate setting.

What this writes, and the one rule

Three artifacts: the lint configuration — the levels in Cargo.toml and the knobs in clippy.toml — a rustfmt.toml, and docs/agents/rust.md. If an artifact already exists, the change is presented as a diff for approval; existing keys are left alone unless the user says otherwise, and only missing keys are added.

Detect first, ask second