feat: 모모유통 메뉴를 [사용자] 그룹 아래로 이동 + 메뉴 삭제 cascade 지원

- DB: menu_info(9000000) parent_obj_id를 0 → -395553955 (사용자) 로 변경
  → 상단 [사용자] 탭 안에 '모모유통' 그룹으로 표시
- /api/admin/menus/delete: cascade=true 시 자손까지 재귀 삭제 (rel_menu_auth 동시 정리)
- admin-panel 메뉴 관리: 하위 메뉴가 있으면 사용자에게 confirm 후 일괄 삭제

src/app/admin-panel/page.tsx

@@ -522,13 +522,30 @@ function MenuManagement() {
     if (!selected) { Swal.fire("알림", "삭제할 메뉴를 선택하세요.", "warning"); return; }
     const r = await Swal.fire({ title: "삭제 확인", text: `"${selected.MENU_NAME_KOR}" 메뉴를 삭제하시겠습니까?`, icon: "warning", showCancelButton: true, confirmButtonText: "삭제", cancelButtonText: "취소" });
     if (!r.isConfirmed) return;
-    const res = await fetch("/api/admin/menus/delete", {
-      method: "POST", headers: { "Content-Type": "application/json" },
-      body: JSON.stringify({ objid: selected.OBJID }),
-    });
-    const data = await res.json();
+
+    const callDelete = async (cascade: boolean) => {
+      const res = await fetch("/api/admin/menus/delete", {
+        method: "POST", headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ objid: selected.OBJID, cascade }),
+      });
+      return res.json();
+    };
+
+    let data = await callDelete(false);
+    if (!data.success && data.needsCascade) {
+      const r2 = await Swal.fire({
+        icon: "warning",
+        title: `하위 메뉴 ${data.childCount}개 함께 삭제`,
+        text: "선택한 메뉴와 모든 하위 메뉴를 함께 삭제합니다. 계속하시겠습니까?",
+        showCancelButton: true, confirmButtonText: "함께 삭제", cancelButtonText: "취소",
+        confirmButtonColor: "#dc2626",
+      });
+      if (!r2.isConfirmed) return;
+      data = await callDelete(true);
+    }
+
     if (data.success) {
-      Swal.fire({ icon: "success", title: "삭제되었습니다.", timer: 1200, showConfirmButton: false });
+      Swal.fire({ icon: "success", title: `${data.deleted ?? 1}개 메뉴 삭제됨`, timer: 1500, showConfirmButton: false });
       setSelected(null); setEditForm({}); setShowForm(false);
       fetchData();
     } else { Swal.fire("오류", data.message, "error"); }

src/app/api/admin/menus/delete/route.ts

@@ -1,29 +1,55 @@
 import { NextRequest, NextResponse } from "next/server";
-import { execute } from "@/lib/db";
+import { pool } from "@/lib/db";
 import { getSession } from "@/lib/session";
 
 export async function POST(request: NextRequest) {
   const user = await getSession();
   if (!user) return NextResponse.json({ success: false }, { status: 401 });
   const body = await request.json();
-  const { objid } = body;
+  const { objid, cascade } = body as { objid?: string | number; cascade?: boolean };
   if (!objid) return NextResponse.json({ success: false, message: "삭제할 메뉴를 선택하세요." });
 
+  const client = await pool.connect();
   try {
-    // 하위 메뉴가 있으면 삭제 불가
-    const { queryOne } = await import("@/lib/db");
-    const child = await queryOne<{ cnt: string }>(
-      `SELECT COUNT(*) AS cnt FROM menu_info WHERE parent_obj_id = $1`,
-      [parseInt(objid, 10)]
+    await client.query("BEGIN");
+    const target = Number(objid);
+
+    // 자손 모두 수집 (재귀)
+    const descendants = await client.query<{ objid: number }>(
+      `WITH RECURSIVE tree AS (
+         SELECT objid FROM menu_info WHERE objid = $1
+         UNION ALL
+         SELECT m.objid FROM menu_info m JOIN tree t ON m.parent_obj_id = t.objid
+       )
+       SELECT objid FROM tree`,
+      [target]
     );
-    if (Number(child?.cnt || 0) > 0) {
-      return NextResponse.json({ success: false, message: "하위 메뉴가 있어 삭제할 수 없습니다. 하위 메뉴를 먼저 삭제하세요." });
+
+    const ids = descendants.rows.map((r) => r.objid);
+    const childCount = ids.length - 1;
+
+    // cascade 미지정인데 하위 있으면 거부
+    if (childCount > 0 && !cascade) {
+      await client.query("ROLLBACK");
+      return NextResponse.json({
+        success: false,
+        message: `하위 메뉴 ${childCount}개가 있습니다. 함께 삭제하려면 다시 시도하세요.`,
+        childCount,
+        needsCascade: true,
+      });
     }
 
-    await execute(`DELETE FROM menu_info WHERE objid = $1`, [parseInt(objid, 10)]);
-    return NextResponse.json({ success: true, message: "삭제되었습니다." });
+    // 권한-메뉴 매핑 정리 후 메뉴 삭제
+    await client.query(`DELETE FROM rel_menu_auth WHERE menu_obj_id = ANY($1::bigint[])`, [ids]);
+    const r = await client.query(`DELETE FROM menu_info WHERE objid = ANY($1::bigint[])`, [ids]);
+    await client.query("COMMIT");
+    return NextResponse.json({ success: true, deleted: r.rowCount, ids });
   } catch (e) {
+    await client.query("ROLLBACK");
     console.error("Menu delete:", e);
-    return NextResponse.json({ success: false, message: "삭제 중 오류가 발생했습니다." });
+    const msg = e instanceof Error ? e.message : "삭제 중 오류";
+    return NextResponse.json({ success: false, message: msg }, { status: 500 });
+  } finally {
+    client.release();
   }
 }