添加数据库修复脚本

server/init-db.js

@@ -49,6 +49,24 @@ async function initDatabase() {
   `);
   console.log('  ✅ Table "prometheus_sources" ready');
 
+  // Create site_settings table
+  await connection.query(`
+    CREATE TABLE IF NOT EXISTS site_settings (
+      id INT PRIMARY KEY DEFAULT 1,
+      page_name VARCHAR(255) DEFAULT '数据可视化展示大屏',
+      title VARCHAR(255) DEFAULT '数据可视化展示大屏',
+      logo_url TEXT,
+      default_theme VARCHAR(20) DEFAULT 'dark',
+      updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
+  `);
+  // Insert default settings if not exists
+  await connection.query(`
+    INSERT IGNORE INTO site_settings (id, page_name, title, default_theme) 
+    VALUES (1, '数据可视化展示大屏', '数据可视化展示大屏', 'dark')
+  `);
+  console.log('  ✅ Table "site_settings" ready');
+
   console.log('\n🎉 Database initialization complete!\n');
   await connection.end();
 }