#!/usr/bin/env bash set -euo pipefail changed_paths_file="${1:-}" if [[ -z "$changed_paths_file" || ! -f "$changed_paths_file" ]]; then  printf 'Usage: %s <changed-paths-file>\n' "$(basename "$0")" >&2  exit 2fi macos_tests=falsemacos_tests_deferred=falsemacos_tests_reason=""path_count=0draft_pull_request="${CI_PULL_REQUEST_DRAFT:-false}" case "$draft_pull_request" in  true|false)    ;;  *)    printf 'CI_PULL_REQUEST_DRAFT must be true or false.\n' >&2    exit 2    ;;esac require_macos_tests() {  local path="$1"  local reason="$2"   macos_tests=true  if [[ -z "$macos_tests_reason" ]]; then    macos_tests_reason="${path}: ${reason}"  fi} classify_path() {  local path="$1"  [[ -z "$path" ]] && return   path_count=$((path_count + 1))   case "$path" in    AGENTS.md|docs/configuration.md)      require_macos_tests "$path" "changes contributor or runtime configuration contracts"      ;;    *.md)      ;;    docs/.nojekyll|docs/CNAME|docs/index.html|docs/llms.txt|docs/site-locales.mjs|docs/site.css|docs/site.js|docs/social.html|docs/social.png)      ;;    docs/*.png|docs/*.jpg|docs/*.jpeg|docs/*.webp|docs/*.ico|docs/*.svg)      ;;    *)      require_macos_tests "$path" "not covered by portable docs/site checks"      ;;  esac} invalid_row=falsewhile IFS=$'\t' read -r status first_path second_path extra_path \  || [[ -n "${status:-}${first_path:-}${second_path:-}${extra_path:-}" ]]do  [[ -z "${status}${first_path:-}${second_path:-}${extra_path:-}" ]] && continue   case "$status" in    R*|C*)      if ! [[ "$status" =~ ^[RC][0-9]{1,3}$ ]] \        || ((10#${status:1} > 100)) \        || [[ -z "${first_path:-}" || -z "${second_path:-}" || -n "${extra_path:-}" ]]      then        invalid_row=true        break      fi      classify_path "$first_path"      classify_path "$second_path"      ;;    A|D|M|T|U|X|B)      if [[ -z "${first_path:-}" || -n "${second_path:-}" || -n "${extra_path:-}" ]]; then        invalid_row=true        break      fi      classify_path "$first_path"      ;;    *)      invalid_row=true      break      ;;  esacdone < "$changed_paths_file" if [[ "$invalid_row" == true ]]; then  printf 'Invalid git name-status row; refusing to skip macOS tests.\n' >&2  exit 2fi if [[ "$path_count" -eq 0 ]]; then  require_macos_tests '<empty diff>' 'no changed paths were reported'fi if [[ "$macos_tests" == true && "$draft_pull_request" == true ]]; then  macos_tests_deferred=true  summary_reason="draft pull request: macOS Swift tests deferred until ready for review"elif [[ "$macos_tests" == true ]]; then  summary_reason="$macos_tests_reason"else  summary_reason="docs/site-only changes covered by portable checks"fi if [[ -n "${GITHUB_OUTPUT:-}" ]]; then  printf 'macos-tests=%s\n' "$macos_tests" >> "$GITHUB_OUTPUT"  printf 'macos-tests-deferred=%s\n' "$macos_tests_deferred" >> "$GITHUB_OUTPUT"  printf 'macos-tests-reason=%s\n' "$summary_reason" >> "$GITHUB_OUTPUT"  printf 'changed-path-count=%s\n' "$path_count" >> "$GITHUB_OUTPUT"fi if [[ "$macos_tests_deferred" == true ]]; then  printf 'macOS Swift tests required but deferred until ready for review: %s.\n' "$macos_tests_reason"elif [[ "$macos_tests" == true ]]; then  printf 'macOS Swift tests required for this change set: %s.\n' "$macos_tests_reason"else  printf 'Skipping macOS Swift tests: %s.\n' "$summary_reason"fi