feat: add lead qualification workflow

app/dashboard/blacklist/page.tsx

@@ -1,10 +1,5 @@
-import { DashboardPlaceholderPage } from "@/components/dashboard-placeholder-page";
+import { BlacklistManager } from "@/components/blacklist/blacklist-manager";
 
 export default function BlacklistPage() {
-  return (
-    <DashboardPlaceholderPage
-      description="Sperrlisten für Domains, E-Mails, Telefonnummern, Firmennamen und Place IDs folgen nach den Datenmodellen."
-      title="Sperrliste"
-    />
-  );
+  return <BlacklistManager />;
 }

app/dashboard/leads/page.tsx

@@ -1,10 +1,5 @@
-import { DashboardPlaceholderPage } from "@/components/dashboard-placeholder-page";
+import { LeadsReviewTable } from "@/components/leads/leads-review-table";
 
 export default function LeadsPage() {
-  return (
-    <DashboardPlaceholderPage
-      description="Lead-Qualifikation, Dubletten und fehlende Kontaktdaten folgen in TASK-7."
-      title="Leads"
-    />
-  );
+  return <LeadsReviewTable />;
 }