# Enforce the CLAUDE.md protocol: every commit message must carry a Co-Authored-By
# trailer. Merge commits are exempt (their MERGE_MSG has no trailer and shouldn't be
# rewritten).
if git rev-parse -q --verify MERGE_HEAD >/dev/null 2>&1; then
  exit 0
fi
grep -q '^Co-Authored-By:' "$1" || {
  echo 'husky - commit message missing Co-Authored-By trailer'
  exit 1
}

# H9 (ersatztv#303) — docs/decisions.md is append-only. Block a commit that rewrites a settled
# entry unless the message carries [decisions-edit]. commit-msg runs after the index is final, so
# the staged diff is what's being committed; the message file ($1) supplies the override token.
./.claude/hooks/decisions-guard.sh staged "$1" || exit 1
