fix(channel): add missing features column to List query

The paginated List query was selecting 9 columns but scanning 10 fields,
missing c.features. GetByID and ListAll already included it correctly.

backend/cmd/server/VERSION

@@ -1 +1 @@
-0.1.108.72
+0.1.108.73

backend/internal/repository/channel_repo.go

@@ -187,7 +187,7 @@ func (r *channelRepository) List(ctx context.Context, params pagination.Paginati
 
 	// 查询 channel 列表
 	dataQuery := fmt.Sprintf(
-		`SELECT c.id, c.name, c.description, c.status, c.model_mapping, c.billing_model_source, c.restrict_models, c.created_at, c.updated_at
+		`SELECT c.id, c.name, c.description, c.status, c.model_mapping, c.billing_model_source, c.restrict_models, c.features, c.created_at, c.updated_at
 		 FROM channels c WHERE %s ORDER BY c.id ASC LIMIT $%d OFFSET $%d`,
 		whereClause, argIdx, argIdx+1,
 	)