refactor: organize service dto contracts

internal/server/handler/integration_config.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"kra/internal/service"
+	"kra/internal/service/dto"
 
 	"github.com/gin-gonic/gin"
 )
@@ -33,7 +34,7 @@ func (h *IntegrationConfig) Find(c *gin.Context) {
 }
 
 func (h *IntegrationConfig) Save(c *gin.Context) {
-	var req service.IntegrationConfigRequest
+	var req dto.IntegrationConfigRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		Fail(c, err.Error())
 		return