diff --git a/backend/app.py b/backend/app.py
index 2774c8f..10ccb5c 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -164,6 +164,10 @@ def list_sessions():
                     has_disks = True
             if not session_files:
                 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],
diff --git a/frontend/templates/index.html b/frontend/templates/index.html
index 3e1369b..c35623f 100644
--- a/frontend/templates/index.html
+++ b/frontend/templates/index.html
@@ -76,11 +76,12 @@ async function loadSessions() {
     for (var i = 0; i < sessions.length; i++) {
       var s = sessions[i];
       var fileNames = s.files.map(function(f) { return f.name; }).join(', ');
+      var firstFile = s.files[0].name;
       html += '<div style="display:flex;align-items:center;justify-content:space-between;padding:0.4rem 0;border-bottom:1px solid var(--pve-border);">';
       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 + '\', \'' + fileNames.replace(/'/g, "\\'") + '\')">Resume</button>';
+      html += '<button class="pve-btn pve-btn-primary pve-btn-small" onclick="resumeSession(\'' + s.session_id + '\', \'' + firstFile.replace(/'/g, "\\'") + '\')">Resume</button>';
       html += '</div>';
     }
     list.innerHTML = html;