clippy

arch/src/stream_context.rs

@@ -1085,7 +1085,7 @@ impl HttpContext for StreamContext {
 
     fn on_http_response_headers(&mut self, _num_headers: usize, _end_of_stream: bool) -> Action {
         if let Some(tool_calls) = self.tool_calls.as_ref() {
-            if tool_calls.len() > 0 {
+            if !tool_calls.is_empty() {
                 let tool_calls_str = serde_json::to_string(&tool_calls).unwrap();
                 self.add_http_response_header("x-arch-tool-calls", tool_calls_str.as_str());
             }