Deny & simplify note: tell Claude not to narrate the retry (T-328)

Add a clause to the preformatted deny-simplify note so Claude proceeds
silently with the simpler version instead of narrating the change.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

test/builtin/claude/prompt_card_test.dart

@@ -242,6 +242,8 @@ void main() {
     // The clause that keeps Claude off the permission surface.
     expect(msg, contains('do not add a memory'));
     expect(msg, contains('change permission settings'));
+    // …and the clause that tells it not to narrate the reformulation (T-328).
+    expect(msg, contains('Do not narrate'));
   });
 
   testWidgets('permission: Deny & simplify appends the user note rather than discarding it (T-311)', (tester) async {