Function snapshot_core_progression_thresholds

pub fn snapshot_core_progression_thresholds(
    game_config: &GameConfig,
    quest_group_type: QuestGroupType,
    previous_points: u64,
    state: &mut OverlordState,
)

Zero the Core payout of each newly earned progression rung that is crossed while Cores are still locked. The async monolith handler persists the highest such threshold as a watermark, and state reconstruction reapplies it after reconnect.