async fn post_plan_member(
plan_id: Path<Uuid>,
payload: Json<AddPlanMemberRequest>,
pool: Data<PgPool>,
user: AuthUser,
) -> ControllerResult<Json<PlanMemberWithDetails>>async fn post_plan_member(
plan_id: Path<Uuid>,
payload: Json<AddPlanMemberRequest>,
pool: Data<PgPool>,
user: AuthUser,
) -> ControllerResult<Json<PlanMemberWithDetails>>