Bug fixes

What's new:
- Completely redesigned UI with a more modern look, improved connection states, smoother status animations, and better readability.
- Added improved proxy connection monitoring to detect unexpected disconnects more reliably.
- Added automatic connection-loss handling, including badge updates and system notifications when protection is interrupted.
- Added persistent error state reporting, so users can still see the reason for a disconnect after reopening the popup.
- Expanded and completed translations for all supported languages.

Improvements:
- Improved handling of proxy failures, reconnect flows, and state synchronization between popup and background scripts.
- Improved layout responsiveness and text wrapping for long localized strings.

Fixes:
- Fixed issues where proxy disconnections were not always reflected correctly.
- Fixed several browser-specific inconsistencies and background logic issues affecting stability.

Multiple Server Locations:
- Now you can choose from 5 different server locations: United Arab Emirates, United States, Poland, Switzerland, and Hong Kong.
- Easy server switching with country flags in the dropdown menu.
- Your selected server is remembered between sessions.

Improved Connection Speed & Stability:
- Faster and more reliable connections
- Smoother performance with optimized network handling