Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/actions/import-badges.ts

@@ -0,0 +1,18 @@
+"use server";
+
+import { requireStaff } from "@/lib/admin/guard";
+import { prisma } from "@/lib/prisma";
+
+export async function importBadgeFromRemote({ code, name, description }: { code: string; name: string; description: string }) {
+  await requireStaff();
+  try {
+    await prisma.websiteBadges.upsert({
+      where: { badgeKey: code },
+      update: { badgeName: name, badgeDescription: description, updatedAt: new Date() },
+      create: { badgeKey: code, badgeName: name, badgeDescription: description, createdAt: new Date(), updatedAt: new Date() },
+    });
+    return { ok: true as const };
+  } catch {
+    return { ok: false as const, error: "Failed to import badge" };
+  }
+}