ui: show latest collect branch/eta message instead of generic running text

web/static/js/app.js

@@ -281,7 +281,6 @@ function pollCollectionJobStatus() {
                     renderCollectionJob();
                 }
             } else if (prevStatus !== collectionJob.status && collectionJob.status === 'running') {
-                appendJobLog('Сбор выполняется...');
                 renderCollectionJob();
             }
         })
@@ -359,7 +358,7 @@ function renderCollectionJob() {
     }[collectionJob.status];
     const progressLabel = isTerminal
         ? terminalMessage
-        : 'Сбор данных...';
+        : latestCollectionActivityMessage();
     progressValue.textContent = `${collectionJob.progress}% · ${progressLabel}`;
 
     logsList.innerHTML = collectionJob.logs.map((log) => (
@@ -370,6 +369,19 @@ function renderCollectionJob() {
     setApiFormBlocked(!isTerminal);
 }
 
+function latestCollectionActivityMessage() {
+    if (!collectionJob || !Array.isArray(collectionJob.logs) || collectionJob.logs.length === 0) {
+        return 'Сбор данных...';
+    }
+    const last = String(collectionJob.logs[collectionJob.logs.length - 1].message || '').trim();
+    if (!last) {
+        return 'Сбор данных...';
+    }
+    // Job logs already contain server timestamp prefix. Show concise step text in progress label.
+    const cleaned = last.replace(/^\d{4}-\d{2}-\d{2}T[^\s]+\s+/, '').trim();
+    return cleaned || 'Сбор данных...';
+}
+
 function isCollectionJobTerminal(status) {
     return ['success', 'failed', 'canceled'].includes(normalizeJobStatus(status));
 }