feat: add back navigation to agent network screen and update route transition animation

lib/routing/app_router.dart

@@ -276,8 +276,14 @@ Widget _fadeTransition(
   Widget child,
 ) {
   return FadeTransition(
-    opacity: CurveTween(curve: Curves.easeInOut).animate(animation),
-    child: child,
+    opacity: CurveTween(curve: Curves.easeOut).animate(animation),
+    child: SlideTransition(
+      position: Tween<Offset>(
+        begin: const Offset(0.02, 0),
+        end: Offset.zero,
+      ).animate(CurvedAnimation(parent: animation, curve: Curves.easeOut)),
+      child: child,
+    ),
   );
 }