Migration/navigation 3

[bosankus]

Issue

• Write github issue number here (eg: Dependency update #4)

What was changed?

• Add changes done on this pull request

Summary by CodeRabbit

• New Features

  • Login/register with token-backed auth, Razorpay checkout and premium subscription flow (purchase + activation).
  • Push notifications (FCM) with in-app toast and notification permission card.
  • In-app webview, pull-to-refresh for weather, and enhanced weather alert card.

• Bug Fixes

  • Improved network/error mapping and retry behavior; more robust GPS/permission fallbacks and safer permission handling.

• UI/UX Improvements

  • Redesigned Settings/Profile and premium screens, animated weather alerts and AQI card, expanded locale support (bn, kn, ml, ta, te, hi, iw).