revert: purchase/analysis NAS 기반으로 원복 (maxDuration 추가)

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

app/api/lotto/purchase/stats/route.ts

@@ -1,37 +1,13 @@
 import { NextResponse } from 'next/server';
-import { createClient } from '@/lib/supabase/server';
-import { requireSubscription } from '../../_nas';
+import { nasGet, requireSubscription, handleNasError } from '../../_nas';
+
+export const maxDuration = 60;
 
 export async function GET() {
   try {
     const auth = await requireSubscription();
     if (auth instanceof NextResponse) return auth;
-
-    const supabase = await createClient();
-    const { data, error } = await supabase
-      .from('lotto_purchases')
-      .select('amount, prize')
-      .eq('user_id', auth.userId);
-
-    if (error) throw error;
-
-    const records = data ?? [];
-    const total_invested = records.reduce((s, r) => s + (r.amount ?? 0), 0);
-    const total_prize = records.reduce((s, r) => s + (r.prize ?? 0), 0);
-    const prize_count = records.filter(r => (r.prize ?? 0) > 0).length;
-    const max_prize = records.reduce((m, r) => Math.max(m, r.prize ?? 0), 0);
-
-    return NextResponse.json({
-      total_records: records.length,
-      total_invested,
-      total_prize,
-      net: total_prize - total_invested,
-      return_rate: total_invested > 0 ? Math.round((total_prize / total_invested) * 1000) / 10 : 0,
-      prize_count,
-      max_prize,
-    });
-  } catch (err) {
-    console.error('[purchase/stats]', err);
-    return NextResponse.json({ error: 'DB_ERROR' }, { status: 500 });
-  }
+    const data = await nasGet('/api/lotto/purchase/stats');
+    return NextResponse.json(data);
+  } catch (err) { return handleNasError(err); }
 }