优化 GitHub Pages 部署配置，支持 master 分支，更新 Node.js 版本，调整构建命令，添加详细部署说明

.github/workflows/deploy.yml

@@ -3,7 +3,7 @@ name: Deploy to GitHub Pages
 on:
   # 当推送到main分支时触发
   push:
-    branches: [ main ]
+    branches: [ main, master ]
   
   # 允许手动触发工作流
   workflow_dispatch:
@@ -30,14 +30,13 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '20'
           cache: 'npm'
           
       - name: Install dependencies
         run: npm ci
-        
-      - name: Build
-        run: npm run build
+        - name: Build for GitHub Pages
+          run: npm run build:github
         
       - name: Setup Pages
         uses: actions/configure-pages@v4