What is the ruling on a wife displaying her certificates containing her photograph to non-mahram men if she works as a doctor, and is it permissible for the husband to prevent her from working for this reason?

It is permissible for a woman to work if it adheres to Islamic guidelines. There is no objection to her submitting her personal photo for a job application, provided that it is modest and shows only the face without adornment.

Regarding the wife's promise to continue working after marriage, if this was made as a condition, then the husband is obliged to fulfill it. If it was merely a promise and did not rise to the level of a condition, then the view that fulfilling it is obligatory is strong and valid.

A wife should not be prevented from working, whether it was a condition or a promise. If it was a condition, the woman has the right to annul the marriage. However, the spouses can mutually agree on the wife ceasing work.