Removed bugs and improved interface

What’s new
• Unload tabs to free memory (without closing them)
• Close duplicate tabs
• Arrow keys in search to move through the list; Enter opens the highlighted tab
• Menu with extra tools
• Clearer dates and a fresher look
• Smoother with lots of tabs

Made the kofi link visible and less intrusive

added kofi button to the corner

xNxP Tabs 1.1

New features:
- Keyboard shortcut to open the popup (default Ctrl+Shift+U / Cmd+Shift+U on Mac). Fully customizable by the user.
- Live tab count displayed in the header that updates as you search or filter, with a fun pop animation.
- Personal best counter that tracks your highest number of concurrent open tabs, with a celebratory "New record!" message when you beat it.

Improvements:
- Slower, gentler animations for the tab count pop and record celebration.
- Larger stacked icon in the header (more visible and better balanced).
- Improved table layout — fixed right-side cutoff/overflow issues that affected long titles and the audio indicator.
- Long tab titles now properly truncate with ellipsis instead of overflowing.
- Tab age row coloring is now fully data-driven (based on the actual min/max last-opened times of your current tabs, with no arbitrary thresholds).
- Various robustness, code quality, and maintainability improvements (dead code removal, better error handling, race condition fixes, etc.).
- Fixed multiple Firefox development warnings (innerHTML usage and manifest property warnings).

The extension remains on Manifest V2 for maximum cross-browser compatibility.