Added a popup notice (Android only): it explains that unloaded tabs are left out, then gives three steps. Firefox for Android 157: tab tray → ⋮ → Select all → ⋮ → Share, copy the list, then Restore tabs… → paste → Save as CSV, Copy as TSV or Copy as text.

Fixes the CSV export hanging on Firefox for Android, and makes tab collection more robust when many tabs are open.