ci / rust (push) Failing after 26s
CI has been red since NAP-211 because docker.gitea.com/runner-images: ubuntu-latest has no `rustup`; the toolchain install step exits 127. - Use `rust:1.83-bookworm` as the job container so rustup + cargo + a stable toolchain are pre-installed - Install `tmux` + `git` so the daemon integration tests can run - Add `rustfmt` and `clippy` components - Also trigger on pushes to `linear/**` so yolo branches see CI before they're merged