0.3.1 (since 0.2.0)

Added
- UI localization: English, Russian, Kazakh, Ukrainian, Belarusian, Serbian (follows Firefox language)
- Proper PNG toolbar/listing icons (vault-dial mark) instead of a generic puzzle placeholder

Changed
- Minimum Firefox version raised to 142.0 (required for data_collection_permissions)

Fixed
- Prefix text field styling on the dark settings page

0.2.0

Added:
- "Sleeping" title marker on discarded tabs, visible right in Firefox's tab strip/sidebar (configurable prefix/emoji, can be turned off)
- Configurable backup retention: optional size cap on top of the snapshot-count cap, three ready-made presets, and a visible prune-history log so retention is never silent
- Native Firefox tab group support: backups capture and restore group name/color
- Unsaved-form protection: skips discarding tabs with an unsubmitted form
- Proactive crash-restore prompt after an unclean shutdown/restart
- Restore-into-current-window option
- Tolerant snapshot import: accepts plain URL lists and a few common external export formats
- Popup now lists every tab in the current window with an active/loaded/discarded indicator

Changed:
- Smart tab activation on close: focus now moves to an already-loaded tab instead of a freshly-discarded neighbor
- Buttons in the popup and settings page now show a press animation and a success confirmation after an action completes

Fixed:
- Snapshot integrity guard: the backup engine no longer persists a fully-empty snapshot