feat(admin): marketplace console + analytics degraded banners

Co-authored-by: Cursor <[email protected]>

src/actions/admin-marketplace.ts

@@ -0,0 +1,36 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { requirePermissionRateLimited } from "@/lib/admin/guard";
+import { PERMS } from "@/lib/permissions";
+import { prisma } from "@/lib/prisma";
+import { logStaffActivity } from "@/lib/services/staff-activity";
+
+/** Cancel an active marketplace listing (state 1 → 0). */
+export async function cancelMarketplaceListing(
+	formData: FormData,
+): Promise<void> {
+	const staff = await requirePermissionRateLimited(PERMS.SHOP_EDIT);
+	const id = Number(formData.get("id"));
+	if (!(id > 0)) return;
+
+	const listing = await prisma.marketplaceItems.findUnique({
+		where: { id },
+		select: { id: true, state: true, userId: true, itemId: true, price: true },
+	});
+	if (listing?.state !== 1) return;
+
+	await prisma.marketplaceItems.update({
+		where: { id },
+		data: { state: 0 },
+	});
+
+	await logStaffActivity({
+		staffId: staff.id,
+		action: "marketplace_cancel",
+		description: `Cancelled marketplace listing #${id} (item ${listing.itemId}, user ${listing.userId}, price ${listing.price})`,
+		targetType: "marketplace",
+		targetId: id,
+	});
+	revalidatePath("/admin/marketplace");
+}