HTML artifacts: render agent-sent HTML/CSS/JS code blocks in an in-app WebView (Android platform WebView, desktop JCEF/KCEF) via a full-screen preview; artifact card with Preview button + code toggle, shown only once the message stops streaming; webview-multiplatform 1.9.40 + KCEF deps, detection + unit tests

app/settings.gradle.kts

@@ -10,6 +10,8 @@ dependencyResolutionManagement {
     repositories {
         mavenCentral()
         google()
+        // KCEF (desktop WebView backend) pulls jogamp artifacts from here.
+        maven("https://jogamp.org/deployment/maven")
     }
 }