Add basePath and assetPrefix for production builds

Configured basePath and assetPrefix in next.config.ts to use the repository name when in production. This ensures correct asset loading and routing for static exports hosted under a subpath.

Author: luyu14039

web/next.config.ts

@@ -1,7 +1,12 @@
 import type { NextConfig } from "next";
 
+const isProd = process.env.NODE_ENV === 'production';
+const repoName = 'tarot-but-hours'; // 如果您的仓库名不是这个，请修改此处
+
 const nextConfig: NextConfig = {
   output: 'export',
+  basePath: isProd ? `/${repoName}` : '',
+  assetPrefix: isProd ? `/${repoName}/` : '',
   images: {
     unoptimized: true,
   },