Release summary — changes since 2.1

• Save the current tab only — a small toggle by the save box saves just the active tab as a session, instead of all tabs.
• "Show tabs" — a saved session's menu now has "Show tabs", which lists that session's tabs so you can open them one at a time.
• Smoother tab-adding — adding tabs to a session keeps the menu open and briefly highlights the newly added tabs.

Tab Session Saver 2.1

• ⚡ Zap — new toolbar button that closes duplicate tabs in the current window (exact and
  near-duplicates), keeping the first of each. Pinned tabs are left alone, and closed tabs can be
  restored with Ctrl+Shift+T.
• Explore a session — each saved session's ⋮ menu now has Explore ▾, which lists that session's
  tabs inline so you can open them one at a time instead of opening the whole session.

Release summary — changes since 1.1

Backup & Restore

New Backup & Restore page (opened from the header gear, or via about:addons → Preferences).
Export all saved sessions to a dated JSON file.
Import sessions from a file — merges into existing ones, never overwrites, skips duplicates
(same name + same tabs).


Session actions (new per-row ⋮ menu)

Add all tabs — add the window's open tabs (or your selected tabs) to a session, skipping ones
already saved.
Add current tab — add just the active tab.
Overwrite — replace a session's tabs with the current window's, with Undo.
Delete — now in the menu, also with Undo (Delete already had it).


Usability & polish

Clicking a session now brings it to the top of the list.
Whole-row hover highlight for clearer targeting.
Delete moved from a text button → red trash icon → into the ⋮ actions menu (danger actions
grouped in red under a divider).
Tooltips on all row actions.