将infrastructure文件夹中的核心文件整合到tofu文件夹中，并删除infrastructure文件夹

infrastructure/environments/dev/main.tf

@@ -1,52 +0,0 @@
-# 开发环境主配置文件
-
-# 版本和提供商配置
-terraform {
-  required_version = ">= 1.6"
-  
-  required_providers {
-    # Oracle Cloud Infrastructure
-    oci = {
-      source  = "oracle/oci"
-      version = "~> 5.0"
-    }
-  }
-  
-  # 后端配置
-  backend "local" {
-    path = "terraform.tfstate"
-  }
-}
-
-# Oracle Cloud 提供商配置
-provider "oci" {
-  tenancy_ocid     = var.oci_config.tenancy_ocid
-  user_ocid        = var.oci_config.user_ocid
-  fingerprint      = var.oci_config.fingerprint
-  private_key_path = var.oci_config.private_key_path
-  region           = var.oci_config.region
-}
-
-# Oracle Cloud 基础设施
-module "oracle_cloud" {
-  source = "../../providers/oracle-cloud"
-  
-  # 传递变量
-  environment    = var.environment
-  project_name   = var.project_name
-  owner          = var.owner
-  vpc_cidr       = var.vpc_cidr
-  availability_zones = var.availability_zones
-  common_tags    = var.common_tags
-  oci_config     = var.oci_config
-  
-  # 开发环境特定配置
-  instance_count = 1
-  instance_size  = "VM.Standard.E2.1.Micro"  # 免费层
-}
-
-# 输出
-output "oracle_cloud_outputs" {
-  description = "Oracle Cloud 基础设施输出"
-  value       = module.oracle_cloud
-}