refactor: rename batch-related variables and functions for consistency and clarity

internal/app/etl/types.go

@@ -64,7 +64,7 @@ type Loader interface {
 		ctx context.Context,
 		tableInfo config.TargetTableInfo,
 		colNames []string,
-		Batch models.Batch,
+		batch models.Batch,
 	) (int, error)
 
 	Exec(
@@ -79,7 +79,7 @@ type Loader interface {
 	)
 }
 
-type TableAnalizer interface {
+type TableAnalyzer interface {
 	QueryColumnTypes(
 		ctx context.Context,
 		tableInfo config.TableInfo,
@@ -93,6 +93,6 @@ type TableAnalizer interface {
 	CalculatePartitionRanges(
 		ctx context.Context,
 		tableInfo config.TableInfo,
-		totalPartitions int,
-	) (models.Partition, error)
+		maxPartitions int,
+	) ([]models.Partition, error)
 }