chore: initial project import

app/contacts/page.tsx

@@ -0,0 +1,60 @@
+import Link from "next/link";
+
+import { PlaceholderActions, ShellPage } from "@/components/page-templates";
+import { ContactSummaryCards, TablePlaceholder } from "@/components/placeholders";
+import { getContactsData } from "@/lib/platform-data";
+import { deleteContact } from "@/lib/admin-crud";
+
+export default async function ContactsPage({
+  searchParams
+}: {
+  searchParams?: Promise<{ error?: string }>; 
+}) {
+  const params = await (searchParams ?? Promise.resolve({ error: undefined }));
+  const contacts = await getContactsData();
+  const error = params.error;
+  const infoMessage = error === "contact_not_found"
+    ? "Contact tidak ditemukan."
+    : error === "contact_has_conversations"
+      ? "Contact tidak bisa dihapus karena sudah punya riwayat percakapan."
+      : error === "invalid_channel"
+        ? "Channel tidak valid."
+        : null;
+
+  return (
+    <ShellPage
+      shell="admin"
+      title="Contacts"
+      description="Daftar contact, filter, import/export, dan akses ke detail screen."
+      actions={<PlaceholderActions primaryHref="/contacts/new" primaryLabel="Add contact" secondaryHref="/contacts/import" secondaryLabel="Import CSV" />}
+    >
+      <ContactSummaryCards contacts={contacts} />
+      {infoMessage ? <p className="rounded-xl border border-warning/30 bg-warning/10 p-3 text-sm text-warning">{infoMessage}</p> : null}
+      <TablePlaceholder
+        title="Contact list"
+        columns={["Name", "Phone", "Tags", "Last Interaction", "Opt-in", "Actions"]}
+        rows={contacts.map((contact) => [
+          contact.fullName,
+          contact.phone,
+          contact.tags.join(", "),
+          contact.lastInteraction,
+          contact.optInStatus,
+          <div key={contact.id} className="flex flex-wrap gap-2">
+            <Link href={`/contacts/${contact.id}`} className="text-brand hover:underline">
+              Detail
+            </Link>
+            <Link href={`/contacts/${contact.id}/edit`} className="text-brand hover:underline">
+              Edit
+            </Link>
+            <form action={deleteContact} className="inline">
+              <input type="hidden" name="contactId" value={contact.id} />
+            <button type="submit" className="text-danger hover:underline">
+              Hapus
+            </button>
+            </form>
+          </div>
+        ])}
+      />
+    </ShellPage>
+  );
+}