Improve worker details display with specific worker information

- Show actual worker name when available in job.result.worker
- Display 'Assigned to cluster' for distributed jobs
- Keep 'Local processing' for local jobs
- Better distinction between local and cluster processing

templates/jobs.html

@@ -449,7 +449,11 @@
                 <div class="worker-details" style="font-size: 0.8rem; color: #6b7280;">
                     {% if job.status == 'processing' %}
                         {% if job.job_id %}
-                            Assigned to worker
+                            {% if job.result and job.result.get('worker') %}
+                                Worker: {{ job.result.worker }}
+                            {% else %}
+                                Assigned to cluster
+                            {% endif %}
                         {% else %}
                             Local processing
                         {% endif %}