System updates

✨ New Features
🎯 Segment Customers by Visits & Spend
New segment conditions let you target customers by their total number of visits and total purchase amount.
🐛 Bug Fixes
📧 White-Label Email Deliverability
Fixed white-label emails sent through custom SMTP being built with an invalid Reply-To header, dead footer links, and invalid social icons — issues that hurt deliverability.
🏢 Franchise Branch Domain
Fixed a franchise branch not picking up the franchise head's domain.