Until now only the clippy CI job and the Dockerfile named a Rust version (kept in sync by hand), while every other CI job, the release binaries and the docs build ran on whatever `stable` happened to be that day. Rust 1.98.0 landing on 2026-08-20 broke `build-binaries` overnight because of that (#5935).
`rust-toolchain.toml` pins 1.96.0 with the `minimal` profile plus clippy, and every `rustup toolchain install stable ...` in CI becomes a bare `rustup toolchain install`, which reads the file. Starting at 1.96.0 (the version clippy is already clean against) keeps this change free of lint churn; catching up to 1.98.0 is a follow-up.
rustfmt stays on nightly because `.rustfmt.toml` uses nightly-only options, so that job now invokes `cargo +nightly fmt` explicitly instead of setting a rustup directory override, which would silently take precedence over the toolchain file.
The file does not list the linux cross-compilation targets on purpose: that would make every developer and CI job download `rust-std` they never use. The two consumers that cross-compile add the targets themselves.
Replaces the `cd frontend && npm ci` setup steps with a pnpm-flavoured
one: enable corepack (one-time), `pnpm install` from the repo root, then
`cd frontend && pnpm run <script>` for frontend scripts. misc/update.sh
also moves to `pnpm --filter mas-frontend run …`
All workflows that previously ran `npm ci` + a frontend script now install
pnpm via pnpm/action-setup (which honors the `packageManager` field in the
root package.json) and run scripts through `pnpm --filter mas-frontend`.
setup-node gets `cache: "pnpm"` so the pnpm store survives between runs.
The @localazy/cli and semver CLIs used by the release/translation workflows
move from ad-hoc `npm install -g` / `npx --yes` invocations to root
devDependencies, so the version is locked in pnpm-lock.yaml and a single
`pnpm install --frozen-lockfile` makes both available as `pnpm exec`.
misc/build-docs.sh (used by the docs workflow and Cloudflare Pages) is
updated to call `corepack enable` on Cloudflare Pages and to run storybook
through `pnpm --filter mas-frontend exec`.
Quentin Gliech