polish: News step hint + n8n description clarify

News step now explains that sources are configured in n8n.
n8n step description clarified as optional webhook triggering.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/setup/SetupWizard.tsx

@@ -468,7 +468,7 @@ export default function SetupWizard() {
             {/* ---- n8n ---- */}
             {currentStep.id === "n8n" && (
               <IntegrationStepLayout
-                icon={Webhook} title="n8n Webhooks" desc="Workflows und Webhooks via n8n triggern."
+                icon={Webhook} title="n8n Webhooks" desc="Optional: Workflows vom Dashboard aus triggern."
                 onPrev={prev}
                 onNext={() => handleSaveIntegration("n8n", n8nCfg, n8nEnabled)}
                 onSkip={() => skipIntegration("n8n")}
@@ -489,6 +489,10 @@ export default function SetupWizard() {
             {currentStep.id === "news" && (
               <div className="space-y-6">
                 <StepHeader icon={Newspaper} title="News" desc="Nachrichten aus der Datenbank." />
+                <div className="p-3 rounded-xl bg-white/[0.03] border border-white/[0.06] text-xs text-base-400 leading-relaxed">
+                  Nachrichtenquellen werden in <span className="text-white font-medium">n8n</span> konfiguriert.
+                  n8n sammelt, dedupliziert und schreibt Artikel in die Datenbank — das Dashboard zeigt sie automatisch an.
+                </div>
                 <FormField label="Max. Alter (Stunden)" description="Ältere Artikel werden ausgeblendet">
                   <NumberInput value={newsCfg.max_age_hours} onChange={(v) => setNewsCfg({ max_age_hours: v })} min={1} max={168} />
                 </FormField>