Add /admin/comments page with delete and pagination

- Add admin auth guard (redirect to /dashboard if not admin)
- Add delete-action.ts with deleteComment(commentId) soft-delete action
- Fix pagination label to show "Страница X из Y · Всего: N"
- Existing actions.ts, comments-table.tsx, and admin-nav entry preserved

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/admin/comments/delete-action.ts

@@ -0,0 +1,19 @@
+"use server";
+
+import { headers } from "next/headers";
+import { auth } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { revalidatePath } from "next/cache";
+
+export async function deleteComment(commentId: string): Promise<{ ok: boolean }> {
+  const session = await auth.api.getSession({ headers: await headers() });
+  if (!session || session.user.role !== "admin") throw new Error("Нет доступа");
+
+  await prisma.lessonComment.update({
+    where: { id: commentId },
+    data: { deleted: true },
+  });
+
+  revalidatePath("/admin/comments");
+  return { ok: true };
+}

src/app/admin/comments/page.tsx

@@ -2,6 +2,9 @@ import { prisma } from "@/lib/prisma";
 import Link from "next/link";
 import { Suspense } from "react";
 import { CommentsTable } from "@/components/admin/comments-table";
+import { auth } from "@/lib/auth";
+import { headers } from "next/headers";
+import { redirect } from "next/navigation";
 
 export const metadata = { title: "Комментарии" };
 
@@ -12,6 +15,9 @@ interface Props {
 }
 
 export default async function AdminCommentsPage({ searchParams }: Props) {
+  const session = await auth.api.getSession({ headers: await headers() });
+  if (!session || session.user.role !== "admin") redirect("/dashboard");
+
   const { page = "1", search = "" } = await searchParams;
   const currentPage = Math.max(1, parseInt(page) || 1);
   const skip = (currentPage - 1) * PAGE_SIZE;
@@ -106,7 +112,7 @@ export default async function AdminCommentsPage({ searchParams }: Props) {
           {currentPage < totalPages && (
             <Link href={pageUrl(currentPage + 1)} className="btn-aubade px-3 py-1 text-xs">→</Link>
           )}
-          <span className="ml-2 text-xs" style={{ color: "var(--muted-foreground)" }}>стр. {currentPage} из {totalPages}</span>
+          <span className="ml-2 text-xs" style={{ color: "var(--muted-foreground)" }}>Страница {currentPage} из {totalPages} · Всего: {total}</span>
         </div>
       )}
     </div>