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    Type Alias AvailabilityValue

    AvailabilityValue:
        | "full_day"
        | "morning"
        | "afternoon"
        | "pending"
        | "unavailable"
        | string

    A member's declared availability for one candidate day.

    As with round status, unknown future values are retained instead of being coerced, so a user never silently overwrites a server-side state.