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

app/admin/kontaktanfragen/page.tsx

@@ -0,0 +1,48 @@
+import { redirect } from "next/navigation";
+import AdminShell from "@/components/admin/AdminShell";
+import StatusSelect from "@/components/admin/StatusSelect";
+import { requireAdminSession } from "@/lib/admin/auth";
+import { getContactInquiries } from "@/lib/admin/store";
+
+export default async function AdminContactsPage() {
+  if (!await requireAdminSession()) redirect("/admin/login");
+  const inquiries = await getContactInquiries();
+
+  return (
+    <AdminShell>
+      <div className="admin-page-head">
+        <p className="eyebrow">Anfragen</p>
+        <h1>Kontaktanfragen</h1>
+      </div>
+      <section className="admin-card">
+        <table className="admin-table">
+          <thead><tr><th>Name</th><th>E-Mail</th><th>Betreff</th><th>Datum</th><th>Status</th></tr></thead>
+          <tbody>
+            {inquiries.map((item) => (
+              <tr key={item.id}>
+                <td>{item.name}</td>
+                <td><a href={`mailto:${item.email}`}>{item.email}</a></td>
+                <td>{item.subject}</td>
+                <td>{new Date(item.createdAt).toLocaleString("de-DE")}</td>
+                <td><StatusSelect id={item.id} type="contact" status={item.status} /></td>
+              </tr>
+            ))}
+            {inquiries.length === 0 && <tr><td colSpan={5}>Noch keine Kontaktanfragen vorhanden.</td></tr>}
+          </tbody>
+        </table>
+      </section>
+      <section className="admin-card">
+        <h2>Detailansicht</h2>
+        <div className="admin-detail-grid">
+          {inquiries.slice(0, 6).map((item) => (
+            <article key={item.id} className="admin-detail">
+              <h3>{item.name}</h3>
+              <p><strong>{item.subject}</strong></p>
+              <p>{item.message}</p>
+            </article>
+          ))}
+        </div>
+      </section>
+    </AdminShell>
+  );
+}