style: run cargo fmt

src/ai/insight_chat.rs

@@ -2575,7 +2575,7 @@ fn render_tree_path(
                 node_ids.push(node.id);
                 fork_info.push(last_fork.take());
             }
-              "user" => {
+            "user" => {
                 let is_initial = user_turns_seen == 0;
                 user_turns_seen += 1;
                 pending_tools.clear();