diff --git a/backend/app.py b/backend/app.py
index 10ccb5c..4f11834 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -166,13 +166,12 @@ def list_sessions():
                 continue
             archives = {".7z", ".zip", ".rar", ".tar.gz", ".tgz", ".tar", ".gz", ".bz2", ".xz", ".ova"}
             has_source = has_disks or any(f["name"].lower().endswith(tuple(archives)) for f in session_files)
-            if not has_source:
-                continue
             sessions.append({
                 "session_id": entry.name,
                 "files": session_files[:10],
                 "total_size_gb": round(total_bytes / (1024**3), 1),
                 "has_disks": has_disks,
+                "resumable": has_source,
             })
     except Exception:
         pass
diff --git a/frontend/templates/index.html b/frontend/templates/index.html
index f964f7f..501718e 100644
--- a/frontend/templates/index.html
+++ b/frontend/templates/index.html
@@ -109,7 +109,11 @@ async function loadSessions() {
       html += '<div><span class="pve-code">' + s.session_id.substring(0, 8) + '</span> &mdash; ' + fileNames + ' <span class="pve-dim">(' + s.total_size_gb + ' GiB)</span>';
       if (s.has_disks) html += ' <span class="pve-badge pve-badge-completed" style="font-size:0.65rem;">extracted</span>';
       html += '</div>';
-      html += '<button class="pve-btn pve-btn-primary pve-btn-small" onclick="resumeSession(\'' + s.session_id + '\', \'' + firstFile.replace(/'/g, "\\'") + '\')">Resume</button>';
+      if (s.resumable) {
+        html += '<button class="pve-btn pve-btn-primary pve-btn-small" onclick="resumeSession(\'' + s.session_id + '\', \'' + firstFile.replace(/'/g, "\\'") + '\')">Resume</button>';
+      } else {
+        html += '<button class="pve-btn pve-btn-small" onclick="cleanupSession(\'' + s.session_id + '\', this)">Clean Up</button>';
+      }
       html += '</div>';
     }
     list.innerHTML = html;
@@ -139,6 +143,17 @@ function resumeSession(sessionId, firstFile) {
   document.getElementById('source-url').required = false;
 }
 
+function cleanupSession(sessionId, btn) {
+  if (!confirm('Delete session ' + sessionId.substring(0, 8) + '?')) return;
+  btn.disabled = true;
+  btn.textContent = '...';
+  fetch('/session/cleanup/cleanup_' + sessionId, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ delete_staging_files: true, session_id: sessionId })
+  }).then(function() { loadSessions(); });
+}
+
 function setPhase(label, pct, isSpinner) {
   const el = document.getElementById('phase-label');
   const fill = document.getElementById('pve-progress-bar');