Customer Detail Redesign

Customer and user detail pages have been looksmaxxing. They now open on an Overview tab that shows previews of every other tab: insights, conversations, and events. You can see what's going on at a glance without clicking through each one.

The health score and an activity sparkline now give you a quick overview of the customer's activity. The sidebar is reorganized into Details and Links, and actions like Reach out and Learn more sit right in the header where you'd expect them.