Create Advanced Animations for UI Enhancement

Enhance the user interface by incorporating advanced animations and transitions. Implement animations for screen transitions, button interactions, and other UI elements to provide a visually appealing and engaging user experience. Utilize Flutter's animation APIs for smooth and responsive animations.

Start by locating the Flutter UI screens and components covered by this request; no specific files, tests, or entry points are named. Review Flutter's animation APIs and determine which screen transitions, button interactions, and other UI elements are in scope. Done means the selected interactions have smooth, responsive animations and the affected UI remains usable.

Written by the indexing model from the issue text.