From b0c4b4ec5a8bb2c923f4557a90ab5793b9a23cfe Mon Sep 17 00:00:00 2001
From: root <root@stein2>
Date: Sun, 13 Sep 2026 11:00:14 +0200
Subject: [PATCH] Harness: print non-string check details as JSON

check() appended the detail by string concatenation, so an object
argument showed up as "[object Object]" in the log (27-console.mjs).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
---
 tools/lib/harness.mjs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/lib/harness.mjs b/tools/lib/harness.mjs
index 555f3ff4..e5def6be 100644
--- a/tools/lib/harness.mjs
+++ b/tools/lib/harness.mjs
@@ -382,7 +382,8 @@ export async function runChecks(options, body) {
   let failures = 0;
   let checkCount = 0;
   function check(name, ok, detail = '') {
-    console.log(`${ok ? 'PASS' : 'FAIL'}  ${name}${detail ? ' – ' + detail : ''}`);
+    const text = typeof detail === 'string' ? detail : JSON.stringify(detail);
+    console.log(`${ok ? 'PASS' : 'FAIL'}  ${name}${text ? ' – ' + text : ''}`);
     checkCount++;
     if (!ok) failures++;
   }