[ENH] feat: Preserve completed lines and improve formatting

for the task : https://avan.tech/item104728 Description
1- It hides lines after they are done. It would be nice to keep them. Like here, what happened at steps 1 and 2?

2- This looks weird.

3- This just was hanging and next finished

Solution

• [ENH] feat: Preserve completed lines and improve formatting

• Fixed issue where lines were hidden after completion.