Fix known issues

• 🇧🇩 Bengali language support
• 🇮🇩 Indonesian language support

Added Portuguese, Turkish, and Urdu language support

Add helper version check and show update popup if needed.

🌍 Exit country — Choose where your traffic exits the Tor network. Pick a country in Settings and Tor will prefer exit nodes there.
🛡 Kill switch — Keeps your proxy active if Tor disconnects, so traffic is blocked rather than leaking.
🔌 Vanilla bridge support — Plain IP:port bridges now work alongside obfs4, WebTunnel, and Snowflake.
✨ Smoother UI — Animated popup transitions, physical button press effect, and a cleaner Settings layout.

Improve performance and fix known issues.