feat: integrate Stripe payment with bugfixes and active timeout cancellation

- Add Stripe payment provider with Checkout Session flow
- Payment provider abstraction layer (EasyPay + Stripe unified interface)
- Stripe webhook with proper raw body handling and signature verification
- Frontend: Stripe button with URL validation, anti-duplicate click, noopener
- Active timeout cancellation: query platform before expiring, recover paid orders
- Singleton Stripe client, idempotency keys, Math.round for amounts
- Handle async_payment events, return null for unknown webhook events
- Set Checkout Session expires_at aligned with order timeout
- Add cancelPayment to provider interface (Stripe: sessions.expire, EasyPay: no-op)
- Enable stripe in frontend payment type list

src/app/api/admin/orders/[id]/retry/route.ts

@@ -2,10 +2,7 @@ import { NextRequest, NextResponse } from 'next/server';
 import { verifyAdminToken, unauthorizedResponse } from '@/lib/admin-auth';
 import { retryRecharge, OrderError } from '@/lib/order/service';
 
-export async function POST(
-  request: NextRequest,
-  { params }: { params: Promise<{ id: string }> },
-) {
+export async function POST(request: NextRequest, { params }: { params: Promise<{ id: string }> }) {
   if (!verifyAdminToken(request)) return unauthorizedResponse();
 
   try {
@@ -14,10 +11,7 @@ export async function POST(
     return NextResponse.json({ success: true });
   } catch (error) {
     if (error instanceof OrderError) {
-      return NextResponse.json(
-        { error: error.message, code: error.code },
-        { status: error.statusCode },
-      );
+      return NextResponse.json({ error: error.message, code: error.code }, { status: error.statusCode });
     }
     console.error('Retry recharge error:', error);
     return NextResponse.json({ error: '重试充值失败' }, { status: 500 });