name: better-setup-just
description: Install a pinned just binary statically from its GitHub release asset (no GitHub API probe, no token — Forgejo/act runner safe)
inputs:
  just-version:
    description: Exact just version to install (x.y.z).
    default: "1.59.0"
runs:
  using: composite
  steps:
    - shell: bash
      run: |
        set -euo pipefail
        v="${{ inputs.just-version }}"
        case "$(uname -m)" in
          x86_64|amd64) target=x86_64-unknown-linux-musl ;;
          aarch64|arm64) target=aarch64-unknown-linux-musl ;;
          *) echo "better-setup-just: unsupported arch $(uname -m)" >&2; exit 1 ;;
        esac
        curl -fsSL "https://github.com/casey/just/releases/download/${v}/just-${v}-${target}.tar.gz" \
          | tar -xz -C /usr/local/bin just
        just --version