Fix Map<*,*> index type error (col 99:35): cast message map first

app/src/main/java/dev/nova/browser/TabManager.kt

@@ -92,14 +92,19 @@ class TabManager(private val runtime: GeckoRuntime) {
         }
     }
 
+    /**
+     * Console lines arrive as message maps from the extension. Cast to a
+     * concretely-keyed map first — indexing a star-projected Map<*, *> with a
+     * String key does not typecheck in Kotlin.
+     */
     fun recordConsoleMessage(raw: Any) {
-        val line = when (raw) {
-            is Map<*, *> -> {
-                val type = raw["type"] ?: "log"
-                val payload = raw["payload"]?.toString() ?: ""
+        val line = when (val msg = raw as? Map<String, Any?>) {
+            null -> raw.toString()
+            else -> {
+                val type = msg["type"] ?: "log"
+                val payload = msg["payload"]?.toString() ?: ""
                 "[$type] $payload"
             }
-            else -> raw.toString()
         }
         consoleLines.add(line)
         android.util.Log.i("NovaConsole", line)