smix-ffi 0.2.1

smix-ffi — UniFFI v0.29+ scaffolding crate. Wraps smix-selector-resolver + smix-screen stone API for cross-language consumption (Swift Package / Kotlin .aar / Expo RN). C-ABI via uniffi-bindgen. iOS sim + macOS + Android targets via cargo build per-triple + xcodebuild -create-xcframework (iOS) / cargo-ndk (Android).