Migrate to NucleusFramework: Tao/NativeView desktop WebView (Linux) and drop Wry

[kdroidFilter]

Summary

Rebrand the library under NucleusFramework and replace the old Wry desktop backend with a Nucleus Tao + NativeView implementation (WebKit2GTK on Linux). Windows and macOS stay no-op for now.

Rebrand & cleanup

• Rename packages io.github.kdroidfilter → dev.nucleusframework (sources, namespaces, Maven GROUP, demos, iOS bundle id)
• Remove the wrywebview module entirely (Rust / Wry / UniFFI / Gobley / JNA / Skiko) and related tooling
• Bump stack: Kotlin 2.4.10, Compose Multiplatform 1.11.1, AGP 8.13.2, coroutines/serialization 1.11.0, lifecycle 2.11.0, maven-publish 0.37.0
• Drop unsupported iosX64 targets with CMP 1.11

Desktop backend (Linux first)

• Desktop WebView embeds via Nucleus NativeView + NucleusPlatformView.GtkWidget
• Native WebKit2GTK JNI library (libcompose_webview_linux.so) under webview-compose/src/jvmMain/native/linux/
• Full API on Linux: loadUrl / loadHtml / loadHtmlFile, navigation, JS eval, JS bridge (IPC), cookies, request interceptor, screenshots, zoom, opaque white background by default
• Windows / macOS remain intentional no-ops until their native backends land
• Requires Tao (nucleusApplication + decorated-window-tao); AWT alone will not embed the view

Demo

• Uses the Nucleus application plugin (dev.nucleusframework 2.3.0) instead of compose.desktop { application { … } }
• Entry point runs the visual e2e suite (real Compose window + WebKit + checklist)

Testing

• Visual e2e suite: 51 cases covering content, navigation, JS, bridge, cookies, interceptor, settings, capture, lifecycle
• Self-validating (DOM markers, bridge round-trips, cookies, PNG screenshots); writes /tmp/composewebview-visual-suite-report.txt and exits non-zero on failure
• Locally validated: 51/51 green, allGreen=true

CI natives (Nucleus-style matrix)

• New reusable workflow .github/workflows/build-natives.yaml:
  • linux-x64 (ubuntu-latest)
  • linux-aarch64 (ubuntu-24.04-arm)
• Cache + upload natives-linux-* artifacts
• PR build and Maven publish download natives before compile/publish
• Native binaries are not committed (gitignored under **/resources/nucleus/native/)
• Gradle: :webview-compose:buildNativeLinux (or bash webview-compose/src/jvmMain/native/linux/build.sh)

Test plan

• ./gradlew :webview-compose:compileKotlinJvm :demo:compileKotlinJvm
• ./gradlew :demo:run (Nucleus plugin) — visual suite 51/51
• Local Linux native build (build.sh / buildNativeLinux)
• CI: build-natives matrix (x64 + aarch64) + PR compile with downloaded .so
• Android / iOS / WasmJs smoke if available
• Desktop packaging via Nucleus (:demo:package / packageDeb) when needed

Notes for reviewers

• Desktop apps must use nucleusApplication(backend = NucleusBackend.Tao) and depend on nucleus.decorated-window-tao for embedding to work
• Default desktop surface is opaque white (desktopWebSettings.transparent = false); set transparent = true only for overlay use cases
• Windows/macOS desktop: API compiles, rendering remains empty until backends are added