fix(streaming): remove keep-alive to debug [DONE] marker issue

src/server/mod.rs

@@ -283,20 +283,11 @@ async fn chat_completions(
                 // Many OpenAI-compatible clients expect a terminal [DONE] marker.
                 // Emit it when the upstream stream ends to avoid clients treating
                 // the response as incomplete.
-                // Convert to a Vec first, then append [DONE], then stream it
                 let done_event = Ok::<Event, AppError>(Event::default().data("[DONE]"));
                 let done_stream = futures::stream::iter(vec![done_event]);
                 let out = sse_stream.chain(done_stream);
 
-                Ok(
+                Ok(Sse::new(out).into_response())
-                    Sse::new(out)
-                        .keep_alive(
-                            axum::response::sse::KeepAlive::new()
-                                .interval(Duration::from_secs(15))
-                                .text(": keep-alive"),
-                        )
-                        .into_response(),
-                )
             }
             Err(e) => {
                 // Record provider failure