feat: 添加每日签到功能和sitemap生成

refactor: 优化TTS配置获取逻辑并提取为独立模块
fix: 修正新用户积分初始化环境变量名称
style: 更新播客生成页面UI和文案
docs: 修改提示词模板格式和内容
build: 添加next-sitemap依赖和配置文件

web/package.json

@@ -5,6 +5,7 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
+    "postbuild": "next-sitemap",
     "start": "next start",
     "lint": "next lint",
     "type-check": "tsc --noEmit",
@@ -28,8 +29,10 @@
     "dotenv": "^17.2.1",
     "drizzle-orm": "^0.44.4",
     "framer-motion": "^11.3.8",
+    "globby": "^14.1.0",
     "lucide-react": "^0.424.0",
     "next": "^14.2.5",
+    "next-sitemap": "^4.2.3",
     "postcss": "^8.4.40",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",