feat(user-agent): add VaultGate for sealed vault authentication

server/crates/arbiter-server/src/grpc/mod.rs

@@ -10,7 +10,6 @@ use tonic::{Request, Response, Status, async_trait};
 use tracing::info;
 
 use crate::{
-    grpc::user_agent::start,
     peers::{client::ClientConnection, user_agent::UserAgentConnection},
 };
 
@@ -63,7 +62,7 @@ impl arbiter_proto::proto::arbiter_service_server::ArbiterService for super::Ser
 
         let (bi, rx) = GrpcBi::from_bi_stream(req_stream);
 
-        tokio::spawn(start(
+        tokio::spawn(user_agent::start(
             UserAgentConnection {
                 db: self.context.db.clone(),
                 actors: self.context.actors.clone(),