feat: 重构前后端架构，添加Go后端和Python Agent服务

- 新增 Go 语言后端服务(server/)，包含用户认证、Agent管理、数据库连接等API
- 新增 Python Agent 服务(agent/)，实现Agent核心逻辑和工具集
- 前端从原生HTML迁移到Vue.js框架(web/src/)
- 添加 Docker Compose 支持(docker-compose.yml)
- 添加项目架构文档(docs/ARCHITECTURE.md)
- 添加环境变量示例(.env.example)和本地启动脚本(start-local.ps1)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/temp_check.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func main() {
+	dsn := "root:881116142@tcp(10.10.10.189:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic("连接失败: " + err.Error())
+	}
+
+	type User struct {
+		User string
+		Host string
+	}
+
+	var users []User
+	db.Raw("SELECT User, Host FROM mysql.user WHERE User='root'").Scan(&users)
+
+	println("Root 用户列表:")
+	for _, u := range users {
+		println("- User: " + u.User + ", Host: " + u.Host)
+	}
+}