将GetInstanceHost改为GetInstanceIP，遵循基于实例操作的原则

Author: aice030

docs/deploy/README.md

@@ -131,9 +131,9 @@ func ValidatePackageURL(packageURL string) error
 func GetServiceInstanceIDs(serviceName string, version ...string) ([]string, error)
 ```
 
-### 5.3 **GetInstanceHost**: 根据实例ID获取实例的IP地址
+### 5.3 **GetInstanceIP**: 根据实例ID获取实例的IP地址
 ```go
-func GetInstanceHost(instanceID string) (string, error)
+func GetInstanceIP(instanceID string) (string, error)
 ```
 
 ### 5.4 **GetInstancePort**: 根据实例ID获取实例的端口号

docs/deploy/interface.md

@@ -204,13 +204,13 @@ version     ...string // 选填，指定版本号进行过滤，未输入则默
 
 **返回结果**: `[]string` - 实例ID数组
 
-### 4.3 GetInstanceHost函数
+### 4.3 GetInstanceIP函数
 
 **函数描述**: 根据实例ID获取实例的IP地址
 
 **函数签名**:
 ```go
-func GetInstanceHost(instanceID string) (string, error)
+func GetInstanceIP(instanceID string) (string, error)
 ```
 
 **输入参数**:

internal/deploy/service/deploy_service.go

@@ -233,7 +233,7 @@ func (f *floyDeployService) DeployNewVersion(params *model.DeployNewVersionParam
 		}
 
 		// 5.2 获取实例IP
-		instanceIP, err := GetInstanceHost(instanceID)
+		instanceIP, err := GetInstanceIP(instanceID)
 		if err != nil {
 			// 记录错误但继续处理其他实例
 			fmt.Printf("获取实例 %s 的IP失败: %v\n", instanceID, err)
@@ -302,7 +302,7 @@ func (f *floyDeployService) ExecuteRollback(params *model.RollbackParams) (*mode
 		}
 
 		// 5.2 获取实例IP
-		instanceIP, err := GetInstanceHost(instanceID)
+		instanceIP, err := GetInstanceIP(instanceID)
 		if err != nil {
 			// 记录错误但继续处理其他实例
 			fmt.Printf("获取实例 %s 的IP失败: %v\n", instanceID, err)

internal/deploy/service/internal_utils.go

@@ -13,7 +13,7 @@ func GetServiceInstanceIDs(serviceName string, version ...string) ([]string, err
 }
 
 // GetInstanceHost 根据实例ID获取实例的IP地址
-func GetInstanceHost(instanceID string) (string, error) {
+func GetInstanceIP(instanceID string) (string, error) {
 	// TODO: 实现获取实例IP地址逻辑
 	return "", nil
 }