Function announce_bundle_scopes 

pub async fn announce_bundle_scopes(gossip: &GossipNode, bytes: &[u8])

Announce every CA scope in a freshly produced bundle to the gossip mesh.

Parses the sealed bundle bytes to recover each scope’s producer_id, issuer_key_hash, and epoch, plus the manifest index digest used as the generation identifier, then broadcasts one GenerationAnnouncement per scope. Failures are logged, never fatal — gossip is best-effort and must not break a successful signing pass. Centralized here because this is the only crate that depends on both ahu (to parse) and hoike-gossip (to send).