Fix stats: count kontaktiert via tag instead of status field

app/api/leads/stats/route.ts

@@ -3,12 +3,12 @@ import { prisma } from "@/lib/db";
 
 export async function GET() {
   try {
-    const [total, newLeads, contacted, withEmail] = await Promise.all([
+    const [total, contacted, withEmail] = await Promise.all([
       prisma.lead.count(),
-      prisma.lead.count({ where: { status: "new" } }),
-      prisma.lead.count({ where: { status: { in: ["contacted", "in_progress"] } } }),
+      prisma.lead.count({ where: { tags: { contains: "kontaktiert" } } }),
       prisma.lead.count({ where: { email: { not: null } } }),
     ]);
+    const newLeads = total - contacted;
 
     // Daily counts for last 7 days
     const sevenDaysAgo = new Date();