refactor(database-config): 移除未使用的模板保存和连接历史功能

移除了数据库配置表单中未使用的模板保存和连接历史功能，以简化组件并提高可维护性。

Refactor the DatabaseConfigForm component by removing the unused saveAsTemplate and showConnectionHistory functions. This change simplifies the component and improves maintainability.

src/pages/database-config/DatabaseConfigForm.tsx

@@ -19,7 +19,7 @@ import {
 import React, { useEffect, useState } from 'react';
 
 const { Option } = Select;
-const { Title, Text } = Typography;
+const { Text } = Typography;
 
 const DATABASE_CONFIG_URL = '/ncnb/dataSources';
 
@@ -71,16 +71,6 @@ const DatabaseConfigForm: React.FC<DatabaseConfigFormProps> = ({ initialValues,
     }
   };
 
-  const saveAsTemplate = () => {
-    message.success('模板保存成功');
-    // 实际实现中，这里应该调用API保存模板
-  };
-
-  const showConnectionHistory = () => {
-    message.info('显示连接历史');
-    // 实际实现中，这里应该打开一个显示连接历史的模态框或抽屉
-  };
-
   const dbTypeMap: Record<string, string> = {
     mysql: 'MySQL',
     postgresql: 'PostgreSQL',
@@ -170,7 +160,7 @@ const DatabaseConfigForm: React.FC<DatabaseConfigFormProps> = ({ initialValues,
             port: 3306,
             ...initialValues,
           }}
-          onValuesChange={(changedValues, allValues) => {
+          onValuesChange={(changedValues) => {
             if (connectionType === 'host' && !changedValues.url) {
               updateJdbcUrl();
             }

src/utils/databaseUtils.ts

@@ -34,7 +34,7 @@ export const getDriverClassName = (type: string) => {
   }
 };
 
-export const generateJdbcUrl = (type: string, host: string, port: string, databaseName: string) => {
+export const generateJdbcUrl = (type: string, host: string, port: number, databaseName: string) => {
   switch (type.toLowerCase()) {
     case 'mysql':
       return `jdbc:mysql://${host}:${port}/${databaseName}`;