v0.1.17

CI-only release, no runtime behavior change. cargo-soothfast's own CI now builds itself once per run and shares that binary across the docs, gate, and deploy jobs instead of rebuilding from source in each; release binaries are now published for five platforms instead of just x86_64-unknown-linux-gnu.

A new composite action (action.yml at the repo root) installs the CLI in a consumer's own CI with the version pinned from its Cargo.lock, cached across workflow runs.

SOOTHFAST_BENCH_TOOLCHAIN lets a job pin cargo bench's toolchain independently of the active one, set alongside SOOTHFAST_RUSTDOC_TOOLCHAIN so a job running both spec/docs and rustdoc-JSON commands compiles its dependency graph once instead of twice. measure/gate are unaffected unless a caller sets it.

API surface

No public API changes.

Performance

item	metric	was	now	delta
no movement past gate thresholds