0.3.0

Added

• Liquid Glass buttons (iOS 26) — NativeButton / NativeIconButton gain
  ios = NativeButtonIosOptions(background = Glass | ProminentGlass): a real UIGlassEffect capsule
  that refracts the content beneath the button and morphs on press. Glass is the clear adaptive
  flavor (content adopts the system label color); ProminentGlass tints the glass with the variant's
  container color. Silent fallback to the flat variant below iOS 26; documented no-op on Android;
  NativeSplitButton accepts the option but renders Automatic this release. Demo: sample app →
  Settings → Developer → "Liquid glass buttons".
• NativeCollapsible — the platform-safe way to collapse/expand content containing native
  controls (use instead of AnimatedVisibility around Native* components). A real
  AnimatedVisibility on Android; on iOS it animates the container's size while content enters and
  leaves in one clean step, and NativeText inside renders through Compose (no interop cut-out
  flash during the animation).
• "Interop churn test" screen in the sample app (Settings → Developer) — regression harness for
  the interop synchronization behaviors below, with the pathological AnimatedVisibility pattern
  reproducible behind an off-by-default toggle.

Fixed

• iOS: ghost / doubled / stale native controls after interop churn. Compose Multiplatform queues
  every UIKit-side interop mutation (insert, position update, removal, onRelease) into a
  transaction executed only when the next rendered frame is presented; actions can execute with
  severe delay (visibly desynced controls during animated visibility) and, in a narrower window, be
  lost outright. Every kit-hosted UIKitView now detaches its native view synchronously at node
  disposal (removal delay bounded to zero — no lingering/doubled controls), and settled positions
  self-heal against the Compose-side layout truth. The remaining delay on the insert side is a
  Compose Multiplatform engine limitation, documented with hard usage rules in
  docs/interop-notes.md §4 and reported upstream (docs/upstream/cmp-interop-transaction-lag.md).