Introduces a new background job class for patron imports. enqueue() reads
the uploaded file content into the job_args and uses line count as job_size
for progress tracking. process() reconstitutes the file handle from the
stored content, delegates to Koha::Patrons::Import with step_callback wired
to $self->step, handles patron list creation, stores the import results, and
clears file_content from the stored data to free space.
Also registers patron_import in Koha::BackgroundJob::core_types_to_classes
so _derived_class can resolve the job correctly.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Brendan Lawlor <blawlor@clamsnet.org>
Signed-off-by: Lisette Scheer <lisette@bywatersolutions.com>
Signed-off-by: Pedro Amorim <pedro.amorim@openfifth.co.uk>