ADD: added some quiality of life features

app/lib/cleanup.server.ts

@@ -0,0 +1,35 @@
+import cron from "node-cron";
+import prisma from "@/lib/prisma.server";
+
+const THIRTY_DAYS_MS = 30 * 24 * 60 * 60 * 1000;
+
+async function purgeExpiredDeletedInvoices(): Promise<void> {
+  const cutoff = new Date(Date.now() - THIRTY_DAYS_MS);
+  const result = await prisma.invoice.deleteMany({
+    where: { status: "DELETED", deletedAt: { lte: cutoff } },
+  });
+  if (result.count > 0) {
+    console.log(
+      `[cleanup] ${result.count} Rechnung(en) endgültig gelöscht (vor ${cutoff.toISOString()})`
+    );
+  }
+}
+
+let scheduled = false;
+
+export function startCleanupScheduler(): void {
+  if (scheduled) return;
+  scheduled = true;
+
+  purgeExpiredDeletedInvoices().catch((err) =>
+    console.error("[cleanup] Startup-Bereinigung fehlgeschlagen:", err)
+  );
+
+  cron.schedule("0 2 * * *", () => {
+    purgeExpiredDeletedInvoices().catch((err) =>
+      console.error("[cleanup] Geplante Bereinigung fehlgeschlagen:", err)
+    );
+  });
+
+  console.log("[cleanup] Scheduler aktiv — täglich 02:00 Uhr");
+}