first commit

backend/scripts/migrate-db.js

@@ -0,0 +1,24 @@
+const Database = require('better-sqlite3');
+const path = require('path');
+
+const dbPath = path.join(__dirname, '../data/certificates.db');
+const db = new Database(dbPath);
+
+try {
+  // 检查字段是否存在
+  const tableInfo = db.prepare("PRAGMA table_info(certificates)").all();
+  const hasDnsMode = tableInfo.some(col => col.name === 'dns_mode');
+  
+  if (!hasDnsMode) {
+    db.exec(`ALTER TABLE certificates ADD COLUMN dns_mode TEXT;`);
+    console.log('✓ 已添加 dns_mode 字段');
+  } else {
+    console.log('✓ dns_mode 字段已存在');
+  }
+  
+  console.log('数据库迁移完成');
+} catch (error) {
+  console.error('迁移失败:', error.message);
+} finally {
+  db.close();
+}