feat: prepare agen crates for publication

crates/worker/tests/system_prompt_template_test.rs

@@ -3,11 +3,11 @@ use std::pin::Pin;
 use std::sync::Arc;
 use std::sync::atomic::{AtomicUsize, Ordering};
 
+use agen::Engine;
+use agen::llm_client::event::{Event as LlmEvent, ResponseStatus, StatusEvent};
+use agen::llm_client::{ClientError, LlmClient, Request};
 use async_trait::async_trait;
 use futures::Stream;
-use llm_engine::Engine;
-use llm_engine::llm_client::event::{Event as LlmEvent, ResponseStatus, StatusEvent};
-use llm_engine::llm_client::{ClientError, LlmClient, Request};
 use session_store::{CombinedStore, FsWorkerStore};
 use session_store::{FsStore, LogEntry, Store};