Always show headphones button; alert if AI not configured

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Marks/Views/BrowserView.swift

@@ -192,6 +192,7 @@ struct BrowserView: View {
     @State private var state: BrowserState
     @State private var readerMode = false
     @State private var showPodcast = false
+    @State private var showAISetupAlert = false
 
     init(url: URL, title: String, claude: ClaudeService? = nil) {
         self.initialURL = url
@@ -261,13 +262,15 @@ struct BrowserView: View {
 
                     Spacer()
 
-                    if claude != nil {
-                        Button { showPodcast = true } label: {
+                    Button {
+                        if claude != nil { showPodcast = true }
+                        else { showAISetupAlert = true }
+                    } label: {
                         Image(systemName: "headphones")
                     }
                     .disabled(state.isLoading)
+
                     Spacer()
-                    }
 
                     ShareLink(item: state.currentURL ?? initialURL) {
                         Image(systemName: "square.and.arrow.up")
@@ -285,5 +288,10 @@ struct BrowserView: View {
                 PodcastPlayerView(articleUrl: (state.currentURL ?? initialURL).absoluteString, claude: claude)
             }
         }
+        .alert("AI Not Configured", isPresented: $showAISetupAlert) {
+            Button("OK") {}
+        } message: {
+            Text("Add your Backend URL and API Key in Settings to use podcast generation.")
+        }
     }
 }