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/wp-basis-smoke.sh

@@ -35,7 +35,7 @@ cleanup() {
   [ "$PODS_WAS_ACTIVE" = "no" ] && wp plugin deactivate pods >/dev/null 2>&1 || true
   cleanup_app_passwords_for "$ADMIN_LOGIN"
 }
-trap cleanup EXIT
+trap 'rc=$?; cleanup; guard_exit "$rc" || exit $?' EXIT
 
 wp plugin activate pods >/dev/null
 wp eval-file "$PLUGIN/tests/Integration/pods-fixture.php" create >/dev/null
@@ -223,4 +223,4 @@ ROWS=$(wp db query "SELECT COUNT(*) FROM ${PREFIX}lit_mcp_log WHERE ability = 'l
 [ "$ROWS" -ge 2 ] || fail "change log rows missing (found $ROWS)"
 pass "change log records ability and client"
 
-echo "ALL CHECKS PASSED"
+finish