gabriel-bolbotina
### Problem The app does not support a back gesture. On iOS there is no swipe back like in native apps. On Android the system back button/gesture behaves differently between devices. On some phones it navigates back, on others (e.g. Nothing phones) it closes the app entirely. ### Proposal Introduce a swipe back gesture that works the same on both iOS and Android: swiping from the left edge of the screen navigates to the previous page, like in native iOS apps. The existing in-app back buttons stay as they are. The gesture is an additional way to navigate, not a replacement. ### Acceptance criteria - Swiping from the left edge navigates to the previous page on both iOS and Android - The gesture behaves the same on both platforms - If a drawer, popup or dialog is open, the gesture closes it first - The gesture never closes the app - Gestures do not conflict with map interactions (panning, drawing, editing geometry) - All existing in-app back buttons still work as before Related issues/ would fix: [Back button close application](https://github.com/MerginMaps/mobile/issues/2153) [Android back button sometimes misbehaves](https://github.com/MerginMaps/mobile/issues/3504)