v1.0.0: rule-based dedup, tab groups, settings sync, new UI

[jontsai]

Summary

A ground-up rewrite of the extension while keeping it vanilla JS with no build step and no dependencies. Fixes the long-standing bugs, adds entity-aware deduplication, respects pinned tabs and tab groups everywhere, and adds a real settings page with sync, export/import and remote rules.

Bugs fixed

• Bring All Windows To Front never worked. The action entry lacked callback: and the handler reassigned a const.
• Popup died mid-action. The popup ran the tab logic itself; Chrome closes the popup the moment a window is created or focused, killing the promise chain. All logic now runs in the service worker and the popup only sends messages.
• Collate raced its own cleanup. N parallel windows.create calls each ran a global blank-tab sweep that could close a sibling window before its tabs arrived. Windows are now created sequentially.
• Sort and collate mangled pinned tabs. Pinned tabs are never moved by any action now.
• Dedupe kept an arbitrary copy. It now keeps pinned, then active, then the most recently viewed tab.
• Removed Bootstrap (160 KB for 8 buttons), the <srript> typo, and the missing jQuery reference.

Features

• Duplicate rules. URLs that differ but mean the same page collapse to one key: PR subpages (GitHub, Bitbucket, GitLab), Jira issue forms, Confluence, LinkedIn profile tabs, Google Docs edit/view, Notion slugs, YouTube short links, HubSpot records, Slack threads, Figma, Amazon, Stack Overflow, Reddit, X. 19 built-in rules, all user-editable JSON with a live URL tester.
• Auto-deduplicate (opt-in): opening a link that is already open closes the new tab and focuses the existing one.
• Close Tabs Like This One: same domain, same site section, or same kind of page, with preview and a keep-current toggle.
• Tab groups: Group by Domain (native groups), Ungroup, and sort that keeps groups contiguous. Consolidate and Split move whole groups between windows and merge into a same-named group in the destination.
• Memory relief: Close Stale, Free Memory (discard), Park Window to Bookmarks, Restore Last Parked.
• Safety: preview list before any close from the popup; Undo for the last close.
• Settings page: chrome.storage.sync with local fallback, JSON export/import, optional remote rules URL refreshed on a schedule.
• Keyboard shortcuts for every action, duplicate-count badge, context menu grouped into sections, proper icon sizes, light and dark themes, inline help.

Testing it locally

git fetch origin && git checkout feature/v1-rewrite
make test     # 21 unit tests for URL normalization, rules, dedup, sort order
make e2e      # 36 checks in a real headless Brave: every action, undo, auto-dedupe, group merge
make dev      # opens a throwaway Brave profile with the extension and two windows of sample tabs

make dev seeds tabs that hit every rule (PR subpages, LinkedIn profile pages, YouTube short link, Stack Overflow /q/, wikipedia with utm/fragment/http) plus blank tabs, so you can click through Deduplicate, Close Tabs Like This One, Group by Domain, Sort, Consolidate and Split and watch what happens. The profile persists between runs; make dev-clean removes it. BROWSER=/path/to/chromium make dev picks another browser. Google Chrome's branded build no longer honours --load-extension, so for your real Chrome profile use chrome://extensions → Load unpacked.

Things worth checking by hand in your real profile:

• Sort a window that has pinned tabs and a couple of groups.
• Consolidate All with a group of the same name in two windows: they should merge.
• Turn on auto-dedupe in Settings, then open a PR link you already have open.
• Export settings, then import them on another profile.

Layout

src/background.js      service worker: message router, context menus, shortcuts, auto-dedupe, badge
src/lib/url.js         pure URL logic (tested)
src/lib/settings.js    storage.sync persistence, export/import, remote rules
src/lib/actions.js     action registry and everything that touches the tabs API
src/popup.*            toolbar popup
src/options.*          settings page
test/url.test.js       node --test
scripts/e2e.mjs        headless browser test over the DevTools protocol
scripts/dev.mjs        dev profile launcher

Screenshots

Popup	Preview before closing	Inline help

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