Save column layouts per segment

Column settings used to be one-size-fits-none: tune them for one segment and you’d changed them everywhere else. Now each segment keeps its own layout. Your “red-hot accounts” view and your “please don’t churn” view can look nothing alike and stay that way.

New segments also begin from a clean slate instead of inheriting a wall of defaults. Consider it a gentle nudge toward intentionality: pick the columns you actually care about and get on with your day.

Give each of your segments its own view in the inbox.