feat: guided setup — free-text AI path (phase 1.2)

The wizard's first step now offers 'or just describe what you want
to do': the goal goes to the configured system AI, which maps it
onto the menu answers (validated against strict enum whitelists —
a hallucinated value can never reach the engine). The suggestion
comes back as an editable plain-language reflection ('this is how I
read your task') the operator can adjust step-by-step or take to
the same preview/apply the menu path uses. Trust rules per
guided-setup.md: suggestion only (never auto-apply), a privacy line
states whether the description is processed locally or sent to a
provider, and without a configured system AI the section explains
that the menu always works — no dead end.

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

lib/l10n/app_localizations_en.dart

@@ -3179,6 +3179,66 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get setupStartCta => 'Get started in 3 questions';
 
+  @override
+  String get setupFreeTextHint =>
+      'e.g.: pre-screen incoming applications and flag incomplete ones';
+
+  @override
+  String get setupFreeTextSuggest => 'Suggest a setup';
+
+  @override
+  String setupFreeTextPrivacyLocal(String model) {
+    return 'Your description is processed locally on this machine ($model).';
+  }
+
+  @override
+  String setupFreeTextPrivacyRemote(String model, String provider) {
+    return 'Your description is sent to the configured system AI: $model ($provider).';
+  }
+
+  @override
+  String get setupFreeTextUnavailable =>
+      'The free-text path needs a configured system AI (Settings → System AI). The choices above always work — no AI required.';
+
+  @override
+  String get setupFreeTextParseError =>
+      'The system AI did not return a usable suggestion. Pick from the menu above — or try again.';
+
+  @override
+  String get setupReflectionTitle => 'This is how I read your task';
+
+  @override
+  String setupReflectionScenario(String label) {
+    return 'What it is about: $label';
+  }
+
+  @override
+  String setupReflectionIntent(String label) {
+    return 'First task: $label';
+  }
+
+  @override
+  String setupReflectionTarget(String label) {
+    return 'Environment: $label';
+  }
+
+  @override
+  String get setupReflectionApproval =>
+      'A human is asked for approval before every AI step.';
+
+  @override
+  String get setupReflectionDataLocal => 'Data never leaves the building.';
+
+  @override
+  String get setupReflectionEditHint =>
+      'Nothing is changed without your confirmation. Adjust any point, or go straight to the preview.';
+
+  @override
+  String get setupReflectionAdjust => 'Adjust';
+
+  @override
+  String get setupReflectionToPreview => 'To the preview';
+
   @override
   String get setupProfileDev => 'straightforward workstation';