fix: escape in streaming wizard steps goes back one step, not to main menu

Author: Hweinstock

src/cli/tui/screens/memory/AddMemoryScreen.tsx

@@ -118,7 +118,13 @@ export function AddMemoryScreen({ onComplete, onExit, existingMemoryNames }: Add
   );
 
   return (
-    <Screen title="Add Memory" onExit={onExit} helpText={helpText} headerContent={headerContent}>
+    <Screen
+      title="Add Memory"
+      onExit={onExit}
+      helpText={helpText}
+      headerContent={headerContent}
+      exitEnabled={isNameStep}
+    >
       <Panel>
         {isNameStep && (
           <TextInput