v0.1.0

Pin rustfmt and clippy components with the toolchain

CI installs rustfmt/clippy for stable only, but rust-toolchain.toml pins
cargo to 1.97.1, so cargo fmt failed with 'cargo-fmt is not installed'.
Declaring the components in the toolchain file makes rustup install them
alongside the pinned toolchain everywhere.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>