v1.1.57: fix scenario editor body bug + relativeTime columns + infra UUIDs

- scenario-form.js: fix ReferenceError body is not defined in renderEditor()
- utils.js: relativeTime(iso) → 3ч 12м / 2д 5ч / только что
- instances.js: columns created / modified with relativeTime()
- index.html: instanceUid under displayName in infra column

site/static/js/utils.js

@@ -43,3 +43,18 @@ function toggleLog(){
     if(el.style.display==='none'){ el.style.display='block'; startLogPoll(); }
     else el.style.display='none';
 }
+
+function relativeTime(iso) {
+    if (!iso) return '-';
+    const d = new Date(iso);
+    if (isNaN(d.getTime())) return '-';
+    const sec = Math.floor((Date.now() - d.getTime()) / 1000);
+    if (sec < 0) return 'только что';
+    if (sec < 60) return sec + 'с';
+    const min = Math.floor(sec / 60);
+    if (min < 60) return min + 'м';
+    const hr = Math.floor(min / 60);
+    if (hr < 24) return hr + 'ч ' + (min % 60) + 'м';
+    const days = Math.floor(hr / 24);
+    return days + 'д ' + (hr % 24) + 'ч';
+}