style: gofmt struct field alignment

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

backend/internal/service/openai_oauth_service.go

@@ -127,16 +127,16 @@ type OpenAIExchangeCodeInput struct {
 
 // OpenAITokenInfo represents the token information for OpenAI
 type OpenAITokenInfo struct {
-	AccessToken      string `json:"access_token"`
-	RefreshToken     string `json:"refresh_token"`
-	IDToken          string `json:"id_token,omitempty"`
-	ExpiresIn        int64  `json:"expires_in"`
-	ExpiresAt        int64  `json:"expires_at"`
-	ClientID         string `json:"client_id,omitempty"`
-	Email            string `json:"email,omitempty"`
-	ChatGPTAccountID string `json:"chatgpt_account_id,omitempty"`
-	ChatGPTUserID    string `json:"chatgpt_user_id,omitempty"`
-	OrganizationID   string `json:"organization_id,omitempty"`
+	AccessToken           string `json:"access_token"`
+	RefreshToken          string `json:"refresh_token"`
+	IDToken               string `json:"id_token,omitempty"`
+	ExpiresIn             int64  `json:"expires_in"`
+	ExpiresAt             int64  `json:"expires_at"`
+	ClientID              string `json:"client_id,omitempty"`
+	Email                 string `json:"email,omitempty"`
+	ChatGPTAccountID      string `json:"chatgpt_account_id,omitempty"`
+	ChatGPTUserID         string `json:"chatgpt_user_id,omitempty"`
+	OrganizationID        string `json:"organization_id,omitempty"`
 	PlanType              string `json:"plan_type,omitempty"`
 	SubscriptionExpiresAt string `json:"subscription_expires_at,omitempty"`
 	PrivacyMode           string `json:"privacy_mode,omitempty"`