test: smoke scripts fail when they stop before their last check

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/Integration/divi-write-smoke.sh

@@ -37,7 +37,7 @@ foreach (array_filter(explode(" ", (string) getenv("LIT_IDS"))) as $id) {
   wp role delete lit_smoke_editor >/dev/null 2>&1 || true
   wp option update lit_mcp_allowed_roles "$ORIGINAL_ROLES" --format=json >/dev/null 2>&1 || true
 }
-trap cleanup EXIT
+trap 'rc=$?; cleanup; guard_exit "$rc" || exit $?' EXIT
 
 create_page() { # $1 = fixture file ("" = empty page), $2 = title -> prints the ID
   LIT_FILE="${1:+$FIXTURES/$1}" LIT_TITLE="$2" wp --user="$ADMIN_LOGIN" eval '
@@ -361,4 +361,4 @@ echo "$AGAIN" | jq -e '.ok == true and (.warnings | any(contains("beim Speichern
   || fail "8b: follow-up write with the new tree_rev: $AGAIN"
 pass "Divi save filters, other byte form: normalized with CHANGED_ON_SAVE, tree_rev = stored state, page valid, then stable"
 
-echo "ALL CHECKS PASSED"
+finish