Function members 

pub async fn members(
    pool: &PgPool,
    actor: &Actor,
    project_id: Uuid,
) -> AppResult<Vec<SeasonMember>>

The members of a group for the season handover, managers first.

Invariants

• Permission: the group is visible to the actor (“not found” otherwise) and the actor manages it (or is an administrator; 403).
• Data: read-only; the clock of the database decides what has expired.