ci(backend): 添加 gofmt 配置

backend/internal/service/pricing_service.go

@@ -515,11 +515,11 @@ func (s *PricingService) matchByModelFamily(model string) *LiteLLMModelPricing {
 }
 
 // GetStatus 获取服务状态
-func (s *PricingService) GetStatus() map[string]interface{} {
+func (s *PricingService) GetStatus() map[string]any {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 
-	return map[string]interface{}{
+	return map[string]any{
 		"model_count":  len(s.pricingData),
 		"last_updated": s.lastUpdated,
 		"local_hash":   s.localHash[:min(8, len(s.localHash))],

backend/internal/service/redeem_service.go

@@ -359,12 +359,12 @@ func (s *RedeemService) Delete(ctx context.Context, id int64) error {
 }
 
 // GetStats 获取兑换码统计信息
-func (s *RedeemService) GetStats(ctx context.Context) (map[string]interface{}, error) {
+func (s *RedeemService) GetStats(ctx context.Context) (map[string]any, error) {
 	// TODO: 实现统计逻辑
 	// 统计未使用、已使用的兑换码数量
 	// 统计总面值等
 
-	stats := map[string]interface{}{
+	stats := map[string]any{
 		"total_codes":  0,
 		"unused_codes": 0,
 		"used_codes":   0,

backend/internal/service/token_refresher.go

@@ -19,7 +19,7 @@ type TokenRefresher interface {
 
 	// Refresh 执行token刷新，返回更新后的credentials
 	// 注意：返回的map应该保留原有credentials中的所有字段，只更新token相关字段
-	Refresh(ctx context.Context, account *model.Account) (map[string]interface{}, error)
+	Refresh(ctx context.Context, account *model.Account) (map[string]any, error)
 }
 
 // ClaudeTokenRefresher 处理Anthropic/Claude OAuth token刷新
@@ -61,14 +61,14 @@ func (r *ClaudeTokenRefresher) NeedsRefresh(account *model.Account, refreshWindo
 
 // Refresh 执行token刷新
 // 保留原有credentials中的所有字段，只更新token相关字段
-func (r *ClaudeTokenRefresher) Refresh(ctx context.Context, account *model.Account) (map[string]interface{}, error) {
+func (r *ClaudeTokenRefresher) Refresh(ctx context.Context, account *model.Account) (map[string]any, error) {
 	tokenInfo, err := r.oauthService.RefreshAccountToken(ctx, account)
 	if err != nil {
 		return nil, err
 	}
 
 	// 保留现有credentials中的所有字段
-	newCredentials := make(map[string]interface{})
+	newCredentials := make(map[string]any)
 	for k, v := range account.Credentials {
 		newCredentials[k] = v
 	}

backend/internal/service/usage_service.go

@@ -195,7 +195,7 @@ func (s *UsageService) GetStatsByModel(ctx context.Context, modelName string, st
 }
 
 // GetDailyStats 获取每日使用统计（最近N天）
-func (s *UsageService) GetDailyStats(ctx context.Context, userID int64, days int) ([]map[string]interface{}, error) {
+func (s *UsageService) GetDailyStats(ctx context.Context, userID int64, days int) ([]map[string]any, error) {
 	endTime := time.Now()
 	startTime := endTime.AddDate(0, 0, -days)
 
@@ -227,13 +227,13 @@ func (s *UsageService) GetDailyStats(ctx context.Context, userID int64, days int
 	}
 
 	// 计算平均值并转换为数组
-	result := make([]map[string]interface{}, 0, len(dailyStats))
+	result := make([]map[string]any, 0, len(dailyStats))
 	for date, stats := range dailyStats {
 		if stats.TotalRequests > 0 {
 			stats.AverageDurationMs /= float64(stats.TotalRequests)
 		}
 
-		result = append(result, map[string]interface{}{
+		result = append(result, map[string]any{
 			"date":                date,
 			"total_requests":      stats.TotalRequests,
 			"total_input_tokens":  stats.TotalInputTokens,