Function voter_wire_decision 

pub fn voter_wire_decision(
    voter_id: i32,
    directory_id_exact: bool,
    endpoint_count: usize,
    endpoints_valid: bool,
    min_supported_version: i16,
    max_supported_version: i16,
) -> VoterWireDecision

Validate the signed voter identity, exact directory translation, endpoint set, and inclusive supported-version range before conversion.