feat: update item streaming and binary check parameters

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/services/async_item_service.rs

@@ -213,7 +213,8 @@ impl AsyncItemService {
                     tail_words,
                     tail_lines,
                     line_start,
-                    line_end
+                    line_end,
+                    None
                 ).await?;
                 is_binary
             };