Agrega PRIVACY.md, actualiza AGENTS.md

lib/utils/transitions.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+
+class SmoothPageTransitionBuilder extends PageTransitionsBuilder {
+  const SmoothPageTransitionBuilder();
+
+  @override
+  Widget buildTransitions<T>(
+    PageRoute<T> route,
+    BuildContext context,
+    Animation<double> animation,
+    Animation<double> secondaryAnimation,
+    Widget child,
+  ) {
+    const begin = Offset(0.0, 0.04);
+    const end = Offset.zero;
+    const curve = Curves.easeInOutCubic;
+    final tween = Tween(begin: begin, end: end).chain(
+      CurveTween(curve: curve),
+    );
+    final fadeTween = Tween<double>(begin: 0.0, end: 1.0);
+    return SlideTransition(
+      position: animation.drive(tween),
+      child: FadeTransition(
+        opacity: animation.drive(fadeTween),
+        child: child,
+      ),
+    );
+  }
+}