sequenceDiagram
    autonumber
    participant O as Officer
    participant W as Officer workspace
    participant R as Roster workflow
    participant V as Validation policy
    participant D as Discord delivery
    O->>W: Prepare composition, bench and boss assignments
    W->>R: Save draft and request publication preview
    R->>V: Check selected options and current readiness
    V->>V: Check one player per roster, slots and community permissions
    alt Confirmed lock or invalid ownership or duplicate player
        V-->>R: Blocking conflicts
        R-->>W: Require correction before publication
    else Unknown readiness without an exception
        V-->>R: Fresh sync or reasoned officer exception required
        O->>W: Record reason for specific unknown assessment
        W->>R: Attach exception and request validation again
    else Valid composition
        V-->>R: Return warnings and assignment changes
        R-->>W: Show publication preview
        O->>W: Confirm publication
        W->>R: Publish reviewed revision
        R->>V: Recheck revision and current constraints
        alt Revision or readiness changed since preview
            R-->>W: Refresh preview before confirming again
        else Reviewed revision is still valid
            R->>R: Commit published roster and delivery work
            R->>D: Update raid post and notify changed assignments
            D-->>R: Acknowledge or retain failed delivery for retry
        end
    end