[1.19.7]
Fixed
- Duplicate URLs sync like export/import. Sync now packs the same { url, groupId }[] lists as export/backup, compares them by count (three identical pages - three rows), and merges with URL close-counts.

[1.19.3]

• Sync apply no longer dims the whole sidebar/options with a big percentage overlay. Instead:
  soft Changed / Quiet edge breath, plus a compact toast (opened/closed counts) that stays
  ~30 seconds and dismisses on click.
• Breath colors are selectable in Options (Orange, Amber, Mint, Sky, Rose; default Orange).
• Light theme breath is much stronger so the glow is visible on white backgrounds.

[1.19]

Fixed:
- Sync opened the same tabs over and over. After an apply created a tab, the tab reports
about:blank while it loads (and a different URL after a redirect), so the next five-second
cycle still saw the requested URL as missing and created it again — 165 tabs grew past 300,
climbing with every exchange. A tab created by sync now keeps its requested URL as its
identity until it has finished loading, after which the real URL is published instead. A live
guard also re-checks what is already open immediately before creating anything, so a stale
diff cannot produce a duplicate.
- All synced tabs ended up in Main instead of their own workspaces. The incremental apply
set only its own internal flag, so tabs.onCreated treated every tab it created as a
user-opened tab and re-assigned it to the current workspace. The apply now runs with the
same restore flag the JSON import uses, which is exactly what suppresses that resolver.
Because the tabs then landed in the wrong workspace, the next cycle also saw them as still
missing — the two bugs were feeding each other.
- A sync apply can no longer flip the view into All Tabs mode by itself. The previous mode
is restored and persisted explicitly at the end of the apply.

[1.18]

Fixed (critical — sync never actually exchanged data)
- Two devices kept overwriting each other instead of syncing. The pull path compared the
remote document timestamp with the local one, but a local snapshot is stamped at collect
time (Date.now()), so "local is newer" was always true. Every device therefore took the
push branch on every exchange and no data ever crossed: the roster showed both machines,
the quota and last-sync time differed on each, pressing Sync Now anywhere changed nothing,
and no conflict window could appear because both devices already counted as members.
Decisions are now made against syncBaseFp — the fingerprint both sides last agreed on —
in one pure, unit-tested function: only the peer moved means fast-forward, only we moved
means publish, both moved means a real merge and then publish.
- Closed tabs came back from the dead. Convergence was a union of both sides, so closing a
tab on one device re-added it from the other on the next exchange, forever. Deletions are now
recorded as facts (tombstones, 30-day life) alongside per-workspace revisions, and a deletion
beats a resurrection unless the URL was genuinely reopened afterwards. The same applies to
deleted workspaces.
- Remote changes no longer rebuild every tab. Routine convergence applies only the
difference — create what is missing, close what is gone — instead of closing and recreating
the whole profile, which on a 160-tab setup destroyed scroll position and history.
- The interface was partly in the wrong language. The sync block had its own
DOMContentLoaded listener and rendered before initI18n() resolved, so strings fell back to
the browser locale instead of the chosen interface language, and currentLang was still
"auto" when dates were formatted — which is why month names stayed in another language.
The block now waits for the dictionary and the stored language before its first render.

[1.17]

Added
- One-time join on a new device only: Replace synced copy or Merge with local tabs. After that, sync runs automatically with no more conflict prompts on established devices.
- Device list in Options with leave request (yellow pending until the other device confirms) and optional force remove.
- Selective sync checkboxes for theme, interface language, sidebar/UI settings, and History log.
- Info card for last sync, quota, and status (same inset style as Auto-Backups). Toolbar badge and sidebar banner when join is needed.
- Clearer Sync Now feedback: data is saved locally, then Firefox Sync transfers it to other devices.

[1.14]
Added
- Sync of workspaces and tabs across devices through your Firefox Account (browser.storage.sync).
- New control in Options, Data Management, Firefox Sync: enable/disable toggle (default on), visible Sync on / Sync off / Syncing state, Sync Now button, last-synced time, and quota usage (X KB of 100 KB).
- Synced data: workspaces (name, icon, order), tab URLs per workspace (including tab-group membership), and settings that should travel (theme, interface language, action-bar visibility, auto-backup preferences).
- Not synced: live tab ids, tabWorkspaceMap, auto-backup history, action logs.
- Safe conflict resolution when the synced copy and this device both have data and they differ. Chooser shows counts for both sides: Use synced copy, Use this device, or Merge both.
- Merge keeps workspaces from both sides (match by id, then by name so the same name is not duplicated), appends tabs and removes duplicate URLs, and never deletes anything.
- Destructive choices ask for confirmation and reuse the existing warning not to touch the browser while tabs restore. If one side is empty and the other is not, the non-empty side is accepted automatically.
- Compression and chunking for Sync quotas: payload is gzipped, base64-encoded, and split across sync_payload_N keys with a sync_meta descriptor, because each storage.sync item is capped at 8 KB even when the total limit is 100 KB.
- Quota is checked before writing. An oversized payload fails with a clear message (reduce tabs or use JSON export) and leaves both local and synced data untouched.
- History log entry Sync Applied with applied workspace and tab counts.

Notes
- Firefox Sync is periodic (roughly every 10 minutes) or on demand via the browser Sync Now. The extension cannot force a device-to-device transfer, and the UI does not claim instant sync. A 15-minute internal alarm re-checks for incoming changes.
- Requires the same Mozilla account on each device with Add-ons enabled in Firefox Sync settings.
- Pushes are suppressed while the extension is initializing, while a restore is running, and while a conflict is waiting for the user, so nothing is silently overwritten on either side.

[1.13]
- Fixed workspace switching (including keyboard shortcuts) so the last active tab in that workspace opens again, instead of the first tab in the list.

Emoji picker now includes the full emoji set (~1870)

What's New:
- Auto-Backups: Added a fully-featured automated backup system for tabs and workspaces, saving directly to browser storage.
- Auto-Backups: Added frequency settings (1, 3, 6, 8, 12 hours, 1 day, 3 days, 1 week) and an option to trigger a backup on browser startup.
- Auto-Backups: Added a beautiful UI in Options to view backup history with localized date formats and 1-click manual restoration.
- Auto-Backups: Advanced management displaying size in KB/MB, Restore, Download, and Delete buttons for each backup, plus a Clear All Backups button.
- Auto-Backups: Configurable max limit for saved backups (1 to 10000) with built-in validation preventing higher inputs.
- Auto-Backups: Added a Max Storage Limit (MB) setting (up to 5000 MB). The background worker automatically deletes the oldest backups if the limit is exceeded.
- Auto-Backups: Clicking Restore automatically creates a safety backup of the current state before applying the chosen backup.
- Auto-Backups: Added new statistics showing Next Backup time, Oldest Backup time, current number of backups out of the maximum limit, and total storage size.
- Auto-Backups: Added the unlimitedStorage permission to bypass the 5MB browser quota for large backups.
- Added a warning dialog before starting an import.
- Added a visual percentage progress indicator in the sidebar and a global blocking overlay on the Options page during data restoration to keep the user informed.
- Workspace Reset: Added a new Reset All & Close Tabs option to the global reset modal in the sidebar.
- Workspace Reset: Added strict secondary confirmation dialogs before executing a global reset to prevent accidental clicks.
- Language Switcher: The Auto option now dynamically displays the system language name that will be used (e.g. English (Auto)).
- Added a smart throttling mechanism (yielding 30ms every 3 tabs) during mass tab restoration to prevent the browser from freezing when opening 80+ tabs.
- Added an active state highlight (rounded square) to the History (Logs) icon in the sidebar when the logs view is open.
- Expanded and applied missing translations for all new features, reset confirmation texts, and notifications across all 19 supported languages.

What's Fixed:
- Fixed a critical bug where deleting a background workspace or closing its tabs from the sidebar would crash and close the entire browser window.
- Fixed a critical issue where selecting Replace current tabs during restore, or Reset All & Close Tabs, would sometimes unexpectedly close the browser window due to context shifts.
- Fixed a JSON backup import bug where all restored tabs were mistakenly placed into the single current workspace instead of being distributed correctly.
- Fixed a bug where tabs would randomly move to

prevent workspace switching to empty workspace when tabs are removed

When all tabs in the current workspace are removed, the extension would incorrectly switch to an empty workspace, leaving the user with no visible tabs. This change ensures a fallback workspace with tabs is selected, or a new tab is created in the current workspace to maintain a usable interface.

icon fix

Add browser action to open options page when toolbar icon is clicked.

The issue of tabs not being remembered in spaces after closing the browser or extension has been resolved.