feat: 添加流式支持；教材知识库 Demo

package.json

@@ -4,8 +4,8 @@
   "type": "module",
   "scripts": {
     "build": "nuxt build",
-    "dev": "nuxt dev",
-    "generate": "nuxt generate",
+    "dev": "nuxt dev --dotenv .env.textbook-demo",
+    "generate": "nuxt generate --dotenv .env.textbook-demo",
     "preview": "nuxt preview",
     "postinstall": "nuxt prepare"
   },
@@ -19,6 +19,7 @@
     "markdown-it": "^14.1.0",
     "nuxt": "^3.16.2",
     "pinia": "^3.0.2",
+    "pinia-plugin-persistedstate": "^4.4.1",
     "tailwindcss": "^4.1.4",
     "vue": "^3.5.13",
     "vue-router": "^4.5.0"