feat: menu visibility toggle + drag-and-drop reorder in admin

src/app/api/menu/reorder/route.ts

@@ -0,0 +1,30 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { requireRole } from '@/lib/auth';
+import { db } from '@/lib/db';
+
+export async function POST(request: NextRequest) {
+  try {
+    await requireRole('admin');
+    const body = await request.json();
+    const { order } = body;
+
+    if (!Array.isArray(order) || order.length === 0) {
+      return NextResponse.json({ error: 'Missing or invalid order array' }, { status: 400 });
+    }
+
+    // Each entry: { id: number, sort_order: number }
+    const updates = order.map((item: { id: number; sort_order: number }, index: number) =>
+      db.query(
+        'UPDATE menu_items SET sort_order = $1 WHERE id = $2',
+        [index, item.id]
+      )
+    );
+
+    await Promise.all(updates);
+
+    return NextResponse.json({ ok: true });
+  } catch (error: any) {
+    console.error('POST /api/menu/reorder error:', error);
+    return NextResponse.json({ error: error.message || 'Failed to reorder menu items' }, { status: 500 });
+  }
+}