fix(admin): persist data directory and pass env vars

app/admin/page.tsx

@@ -0,0 +1,46 @@
+import { redirect } from "next/navigation";
+import AdminShell from "@/components/admin/AdminShell";
+import { requireAdminSession } from "@/lib/admin/auth";
+import { getContactInquiries, getRepairInquiries } from "@/lib/admin/store";
+
+function countNew<T extends { status: string }>(items: T[]) {
+  return items.filter((item) => item.status === "new").length;
+}
+
+export default async function AdminDashboardPage() {
+  if (!await requireAdminSession()) redirect("/admin/login");
+  const [contacts, repairs] = await Promise.all([getContactInquiries(), getRepairInquiries()]);
+  const latest = [...contacts, ...repairs].sort((a, b) => b.createdAt.localeCompare(a.createdAt)).slice(0, 6);
+
+  return (
+    <AdminShell>
+      <div className="admin-page-head">
+        <p className="eyebrow">Administration</p>
+        <h1>Dashboard</h1>
+      </div>
+      <div className="admin-kpis">
+        <div className="admin-kpi"><span>Kontaktanfragen</span><strong>{countNew(contacts)}</strong><small>neu</small></div>
+        <div className="admin-kpi"><span>Reparaturanfragen</span><strong>{countNew(repairs)}</strong><small>neu</small></div>
+        <div className="admin-kpi"><span>Website</span><strong>Online</strong><small>OK</small></div>
+        <div className="admin-kpi"><span>SMTP</span><strong>Vorbereitet</strong><small>nicht aktiv</small></div>
+      </div>
+      <section className="admin-card">
+        <h2>Letzte Anfragen</h2>
+        <table className="admin-table">
+          <thead><tr><th>Datum</th><th>Name</th><th>Typ</th><th>Status</th></tr></thead>
+          <tbody>
+            {latest.map((item) => (
+              <tr key={item.id}>
+                <td>{new Date(item.createdAt).toLocaleDateString("de-DE")}</td>
+                <td>{item.name}</td>
+                <td>{"manufacturer" in item ? "Reparatur" : "Kontakt"}</td>
+                <td><span className={`status ${item.status}`}>{item.status}</span></td>
+              </tr>
+            ))}
+            {latest.length === 0 && <tr><td colSpan={4}>Noch keine Anfragen vorhanden.</td></tr>}
+          </tbody>
+        </table>
+      </section>
+    </AdminShell>
+  );
+}