fix: enable canvas webview scrolling on mobile nodes

apps/android/app/src/main/java/com/steipete/clawdis/node/ui/RootScreen.kt

@@ -163,6 +163,10 @@ private fun CanvasView(viewModel: MainViewModel, modifier: Modifier = Modifier)
         // Some embedded web UIs (incl. the "background website") use localStorage/sessionStorage.
         settings.domStorageEnabled = true
         settings.mixedContentMode = WebSettings.MIXED_CONTENT_COMPATIBILITY_MODE
+        isScrollContainer = true
+        overScrollMode = View.OVER_SCROLL_IF_CONTENT_SCROLLS
+        isVerticalScrollBarEnabled = true
+        isHorizontalScrollBarEnabled = true
         webViewClient =
           object : WebViewClient() {
             override fun onReceivedError(

apps/ios/Sources/Screen/ScreenController.swift

@@ -43,9 +43,7 @@ final class ScreenController {
         self.webView.scrollView.contentInset = .zero
         self.webView.scrollView.scrollIndicatorInsets = .zero
         self.webView.scrollView.automaticallyAdjustsScrollIndicatorInsets = false
-        // Disable scroll to allow touch events to pass through to canvas
-        self.webView.scrollView.isScrollEnabled = false
-        self.webView.scrollView.bounces = false
+        self.applyScrollBehavior()
         self.webView.navigationDelegate = self.navigationDelegate
         self.navigationDelegate.controller = self
         a2uiActionHandler.controller = self
@@ -60,6 +58,7 @@ final class ScreenController {
 
     func reload() {
         let trimmed = self.urlString.trimmingCharacters(in: .whitespacesAndNewlines)
+        self.applyScrollBehavior()
         if trimmed.isEmpty {
             guard let url = Self.canvasScaffoldURL else { return }
             self.errorText = nil
@@ -250,6 +249,15 @@ final class ScreenController {
         return false
     }
 
+    private func applyScrollBehavior() {
+        let trimmed = self.urlString.trimmingCharacters(in: .whitespacesAndNewlines)
+        let allowScroll = !trimmed.isEmpty
+        let scrollView = self.webView.scrollView
+        // Default canvas needs raw touch events; external pages should scroll.
+        scrollView.isScrollEnabled = allowScroll
+        scrollView.bounces = allowScroll
+    }
+
     private static func jsValue(_ value: String?) -> String {
         guard let value else { return "null" }
         if let data = try? JSONSerialization.data(withJSONObject: [value]),

apps/ios/Tests/ScreenControllerTests.swift

@@ -16,6 +16,15 @@ import WebKit
         #expect(scrollView.bounces == false)
     }
 
+    @Test @MainActor func navigateEnablesScrollForWebPages() {
+        let screen = ScreenController()
+        screen.navigate(to: "https://example.com")
+
+        let scrollView = screen.webView.scrollView
+        #expect(scrollView.isScrollEnabled == true)
+        #expect(scrollView.bounces == true)
+    }
+
     @Test @MainActor func navigateSlashShowsDefaultCanvas() {
         let screen = ScreenController()
         screen.navigate(to: "/")