Clearer offer status across candidate views

Improved

• Offer status visible at a glance Candidate Overview and Profile Progress now show the current offer's status and how long it's been at that stage — so you can see who's waiting on a signed contract without opening the offer.
• Safer offer deletion and discard flows The confirmation dialog when you delete or discard an offer now spells out what's being removed and at which stage, so it's harder to drop the wrong one by accident.