Fix build error: create custom next-pwa declaration file to resolve TypeScript conflicts with Next.js 16

types/next-pwa.d.ts

@@ -0,0 +1,22 @@
+declare module 'next-pwa' {
+  import { NextConfig } from 'next';
+
+  interface PWAConfig {
+    dest?: string;
+    disable?: boolean;
+    register?: boolean;
+    scope?: string;
+    sw?: string;
+    runtimeCaching?: any[];
+    buildExcludes?: string[];
+    publicExcludes?: string[];
+    fallbacks?: Record<string, string>;
+    cacheOnFrontEndNav?: boolean;
+    reloadOnOnline?: boolean;
+    [key: string]: any;
+  }
+
+  function withPWA(config?: PWAConfig): (nextConfig: NextConfig) => NextConfig;
+
+  export = withPWA;
+}