fix(ux): quick wins from the usertest medium list

- audit type filter: 'Alle'/'All' capitalized like every other label
- settings -> setup wizard: close Settings first (one modal layer),
  stronger wizard scrim
- try-out setup profile discloses the upgrade path to a regulated
  profile
- store maturity pills explain themselves on hover (experimental/
  published/planned)

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

lib/widgets/guided_setup_dialog.dart

@@ -144,6 +144,10 @@ class GuidedSetupDialog extends StatefulWidget {
     return showDialog<void>(
       context: context,
       barrierDismissible: false,
+      // Stronger than the default scrim: the wizard is a focused,
+      // multi-step flow — whatever lies beneath must read as
+      // background, not as competing UI.
+      barrierColor: Colors.black.withValues(alpha: 0.72),
       builder: (_) => GuidedSetupDialog(shell: shell),
     );
   }