refactor: 统一API鉴权并提升代码健壮性

src/app/api/webhook/check-duplicates/route.ts

@@ -1,5 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { prisma } from '@/lib/prisma'
+import { isValidApiKey } from '@/lib/auth'
 import { z } from 'zod'
 
 /**
@@ -179,8 +180,7 @@ export async function POST(request: NextRequest) {
     const payload = validationResult.data
 
     // Verify API Key
-    const apiKey = process.env.WEBHOOK_API_KEY
-    if (payload.apiKey !== apiKey) {
+    if (!isValidApiKey(payload.apiKey)) {
       return NextResponse.json(
         {
           success: false,