diff --git a/app/shared/src/androidMain/kotlin/iris/platform/AndroidWebView.kt b/app/shared/src/androidMain/kotlin/iris/platform/AndroidWebView.kt
index 3364d31..7fc3ba2 100644
--- a/app/shared/src/androidMain/kotlin/iris/platform/AndroidWebView.kt
+++ b/app/shared/src/androidMain/kotlin/iris/platform/AndroidWebView.kt
@@ -10,12 +10,21 @@ import com.multiplatform.webview.web.WebView
 import com.multiplatform.webview.web.rememberWebViewStateWithHTMLData
 
 /**
- * M9: HTML artifact preview on Android — the platform WebView (JavaScript
- * enabled by default in the library's WebSettings).
+ * M9: HTML artifact preview on Android — the platform WebView.
+ *
+ * JavaScript is on by default in the library's WebSettings, but interactive
+ * artifacts also need DOM storage (localStorage/sessionStorage), which the
+ * library leaves disabled and which additionally requires the document to sit
+ * on a real origin. Loading with a null base URL puts the page on the opaque
+ * `about:blank` origin, where the storage APIs are inaccessible, so we pin a
+ * real (unresolvable) base URL and switch DOM storage on.
  */
+private const val ARTIFACT_BASE_URL = "https://iris-artifact.local/"
+
 @Composable
 actual fun PlatformWebView(html: String, modifier: Modifier) {
-    val state = rememberWebViewStateWithHTMLData(data = html)
+    val state = rememberWebViewStateWithHTMLData(data = html, baseUrl = ARTIFACT_BASE_URL)
+    state.webSettings.androidWebSettings.domStorageEnabled = true
     WebView(state, modifier = modifier)
 }