fix: enhance error handling in extractor and loader processes; ensure proper job error propagation and logging

internal/app/etl/extractors/mssql.go

@@ -247,24 +247,28 @@ func (mssqlEx *MssqlExtractor) Exec(
 
 			if err != nil {
 				var exError *custom_errors.ExtractorError
+				var jobError *custom_errors.JobError
 				if errors.As(err, &exError) {
 					select {
 					case <-ctx.Done():
 						return
 					case chErrorsOut <- *exError:
 					}
-				}
-
-				var jobError *custom_errors.JobError
-				if errors.As(err, &jobError) {
+				} else if errors.As(err, &jobError) {
 					select {
 					case <-ctx.Done():
 						return
 					case chJobErrorsOut <- *jobError:
 					}
+				} else {
+					select {
+					case <-ctx.Done():
+						return
+					case chErrorsOut <- custom_errors.ExtractorError{Partition: partition, Msg: err.Error()}:
+					}
 				}
 
-				return
+				continue
 			}
 
 			wgActivePartitions.Done()

internal/app/etl/loaders/postgres.go

@@ -97,24 +97,28 @@ func (postgresLd *PostgresLoader) Exec(
 
 			if err != nil {
 				var ldError *custom_errors.LoaderError
+				var jobError *custom_errors.JobError
 				if errors.As(err, &ldError) {
 					select {
 					case <-ctx.Done():
 						return
 					case chErrorsOut <- *ldError:
 					}
-				}
-
-				var jobError *custom_errors.JobError
-				if errors.As(err, &jobError) {
+				} else if errors.As(err, &jobError) {
 					select {
 					case <-ctx.Done():
 						return
 					case chJobErrorsOut <- *jobError:
 					}
+				} else {
+					select {
+					case <-ctx.Done():
+						return
+					case chErrorsOut <- custom_errors.LoaderError{Batch: batch, Msg: err.Error()}:
+					}
 				}
 
-				return
+				continue
 			}
 
 			wgActiveBatches.Done()