sequenceDiagram
    autonumber
    participant O as Officer
    participant W as Website
    participant R as Raid workflow
    participant S as Schedule runner
    participant D as Discord delivery
    O->>W: Save raid template, time zone and weekly schedule
    W->>R: Check officer permissions and schedule
    R->>R: Store targets, deadline and recurrence rule
    S->>R: Materialize due occurrence
    R->>R: Resolve local schedule to UTC and check occurrence identity
    alt Occurrence already exists
        R-->>S: Return existing raid
    else New occurrence
        R->>R: Create raid from template
        R->>D: Request initial raid post
        D-->>R: Record Discord post reference or retry state
    end
    O->>W: Change raid start or target
    W->>R: Validate and save change
    R->>R: Re-evaluate affected readiness and assignments
    R->>D: Update existing post and notify affected participants