refactor: backend tenant_group 제거 및 리팩터 반영

backend/internal/service/ory_service.go

@@ -2,7 +2,6 @@ package service
 
 import (
 	"baron-sso-backend/internal/domain"
-	"baron-sso-backend/internal/utils"
 	"bytes"
 	"context"
 	"encoding/json"
@@ -28,9 +27,9 @@ type OryProvider struct {
 
 func NewOryProvider() *OryProvider {
 	return &OryProvider{
-		KratosAdminURL:  utils.GetEnv("KRATOS_ADMIN_URL", "http://kratos:4434"),
-		KratosPublicURL: utils.GetEnv("KRATOS_PUBLIC_URL", "http://kratos:4433"),
-		HydraAdminURL:   utils.GetEnv("HYDRA_ADMIN_URL", "http://hydra:4445"),
+		KratosAdminURL:  getenv("KRATOS_ADMIN_URL", "http://kratos:4434"),
+		KratosPublicURL: getenv("KRATOS_PUBLIC_URL", "http://kratos:4433"),
+		HydraAdminURL:   getenv("HYDRA_ADMIN_URL", "http://hydra:4445"),
 	}
 }
 
@@ -320,7 +319,6 @@ func (o *OryProvider) submitLoginCodeInit(loginID, returnTo string) (*domain.Lin
 
 	respBody, _ := io.ReadAll(io.LimitReader(resp.Body, 4096))
 	if resp.StatusCode >= 300 {
-		slog.Warn("Ory link login init failed", "loginID", loginID, "flow_id", flowID, "status", resp.StatusCode, "body", string(respBody))
 		init, ok := parseKratosLinkLoginResponse(flowID, respBody)
 		if ok {
 			slog.Info("Ory link login initiated with non-2xx response", "loginID", loginID, "flow_id", flowID, "status", resp.StatusCode)
@@ -729,12 +727,10 @@ func (o *OryProvider) UpdateUserPassword(loginID, newPassword string, r *http.Re
 }
 
 func getenv(key, fallback string) string {
-	v := os.Getenv(key)
-	if v == "" {
-		return fallback
+	if v := os.Getenv(key); v != "" {
+		return v
 	}
-	// Strip surrounding double quotes if present
-	return strings.Trim(v, "\"")
+	return fallback
 }
 
 // findIdentityID: Kratos Admin API에서 credentials_identifier로 검색 후 첫 번째 identity id 반환