Bevy 0.19 — UI

When to use this skill

• Spawn Node-based panels, buttons, labels, overlays, or menus.
• Handle Interaction::{None, Hovered, Pressed} and visual states.
• Style text after the 0.19 Parley migration.
• Manage pointer-acquired InputFocus or accessible names.
• Build static trees with children![] or dynamic trees with with_children.

Canonical pattern

use bevy::{
    input_focus::{FocusCause, InputFocus},
    prelude::*,
};