feat: expose transaction failure stages and conservative outcomes

database/database.go

@@ -107,27 +107,3 @@ func (db *DB) Health(ctx context.Context) error {
 	defer cancel()
 	return db.PingContext(checkCtx)
 }
-
-// InTx commits only when work returns nil. Any work error or panic rolls back.
-func (db *DB) InTx(ctx context.Context, options *sql.TxOptions, work func(*sql.Tx) error) (err error) {
-	if db == nil || db.DB == nil {
-		return errors.New("database is not initialized")
-	}
-	tx, err := db.BeginTx(ctx, options)
-	if err != nil {
-		return fmt.Errorf("begin transaction: %w", err)
-	}
-	defer func() {
-		rollbackErr := tx.Rollback()
-		if rollbackErr != nil && !errors.Is(rollbackErr, sql.ErrTxDone) {
-			err = errors.Join(err, fmt.Errorf("rollback transaction: %w", rollbackErr))
-		}
-	}()
-	if err = work(tx); err != nil {
-		return err
-	}
-	if err = tx.Commit(); err != nil {
-		return fmt.Errorf("commit transaction: %w", err)
-	}
-	return nil
-}