React Native (Expo) animations — Reanimated v4 + Gesture Handler Defaults (pick these unless there’s a reason not to) 1) Simple state change (hover/pressed/toggled, small style changes): use Reanimated CSS Transitions . 2) Mount/unmount + layout changes (lists, accordions, reflow): use Reanimated Layout Animations . 3) Interactive / per-frame (gestures, scroll, physics, drag): use Shared Values + worklets (UI thread). If an existing codebase already uses a different pattern, stay consistent and only migrate when necessary. Quick start Install (Expo) Run the setup check (optional): 1) Shared v…