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>