fix(ci): replace missing_links python heredoc with bash loop

Second heredoc also incompatible with act runner.

Authored-by: Moko Consulting

.gitea/workflows/repo-health.yml

@@ -608,8 +608,24 @@ jobs:
             fi
 
             if [ -f "${DOCS_INDEX}" ]; then
-              missing_links="$(python3 - <<'PY'
-              import os
+            missing_links=""
+            if [ -f "${DOCS_INDEX}" ]; then
+              while IFS= read -r line; do
+                for link in $(echo "$line" | grep -oP '\]\(\K[^)]+' || true); do
+                  case "$link" in http://*|https://*|\#*|mailto:*) continue ;; esac
+                  linkpath="${link%%#*}"
+                  linkpath="${linkpath%%\?*}"
+                  [ -z "$linkpath" ] && continue
+                  if [ "${linkpath:0:1}" = "/" ]; then
+                    testpath="${linkpath#/}"
+                  else
+                    testpath="$(dirname "${DOCS_INDEX}")/${linkpath}"
+                  fi
+                  [ ! -e "$testpath" ] && missing_links="${missing_links}${testpath}
+"
+                done
+              done < "${DOCS_INDEX}"
+            fi
               import re
 
               idx = os.environ.get('DOCS_INDEX', 'docs/docs-index.md')