The member's goal names the requirement the rest of the set exists to meet: if the number ignores what they just did, they stop believing all of it. That is read-your-writes stated by the person who needs it.
The trust & safety analyst is in the cast from the start. A leaderboard with a visible reward is a target, and retraction designed in later becomes mutation of live counters.
The season closer and the reward service are actors because the handover between them is where immutability stops being a nice property and becomes a payment.
Three journeys get their own map
The member checking where they stand — the loop that decides whether the platform is believed.
The engineer shipping a leaderboard — the loop that decides whether it is adopted.
The analyst removing a cheater — the loop that decides whether it is trusted after an exploit.