List per-creator-per-day new-follower counts across all agency creators

Returns a single paginated stream of per-creator-per-day new-follower rows across every creator the authenticated agency manages, sorted by most recent day first.

This endpoint is an analytics time series, not a real-time audience snapshot:

• newFollowersCount = number of new follows recorded in the day bucket for the creator
• total = cumulative new followers for the creator from the beginning of the requested range (running sum of newFollowersCount)

<Warning>Follows are hard-deleted on unfollow — there is no record of unfollows. As a result this series only counts follows that still exist, has no unfollow/net-loss column, and historical days are survivorship-biased (a follow that was later undone leaves no trace). total is therefore cumulative new follows gained within the range, not an absolute or net follower count. For the current follower count, use the account/audience endpoints instead.</Warning>

<Info>Requires: Agency admin access</Info>