Struct SemanticStateRecord 

pub struct SemanticStateRecord {
    pub role: SemanticStateRole,
    pub index: u64,
    pub bytes: Vec<u8>,
    pub capacity_bytes: usize,
}

One actual canonical control record or queue payload retained by a parent. Mutable queue capacity is explicit; bytes contain the real encoded header and entries, including an empty queue’s header rather than an invented state.

Fields

role: SemanticStateRole

index: u64

bytes: Vec<u8>

capacity_bytes: usize