The latest updates look very good. Thank you very much.
So I have added my Intermarche card, one of the cards with 19 digits. The output for the entry was:
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Card Name: Intermarche barcodeEntry: 3250390100098299963
comeFromEditSave:0
We will do an INSERT instead of update because it is not an edit
No Back or front image entered
Accessed SearchTab:
searchParam:%%
67 Example Card
94 Intermarche
cardName:Intermarche
codebar:3250390100098299963
id0:94
codebarYey:3250390100098299963
Barcode correctly Saved
No image where given
No image where given
cardName:Example Card
codebar: 123456789101
id0:67
codebarYey:123456789101
Barcode correctly Saved
Stored blob data into: tmp/67.jpg

Stored blob data into: tmp/67_back.jpg

cardName:Intermarche
codebar:3250390100098299963
id0:94
codebarYey:3250390100098299963
Barcode correctly Saved
No image where given
No image where given
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Unfortunately, although the card number is saved and displayed as 3250390100098299963 the barcode is incorrect and displayed as 3250390100096

I know you are not keen on using the barcode programme to create the barcodes but compare the difference between the two:
$ barcode -b 3250390100098299963 -S -o storecard.svg
$ barcode -b 3250390100096 -S -o barcode.svg

PS: The Example card is not shown until Entry Cards is selected for the first time

Edit:
Actually no cards are shown until Entry Cards is selected.