feat: configurable recursion_limit and max_concurrency

Author: cristipufu

src/uipath_langchain/_cli/_runtime/_runtime.py

@@ -1,5 +1,6 @@
 import json
 import logging
+import os
 from typing import List, Optional
 
 from langchain_core.callbacks.base import BaseCallbackHandler
@@ -88,6 +89,14 @@ async def execute(self) -> Optional[UiPathRuntimeResult]:
                     "callbacks": callbacks,
                 }
 
+                recursion_limit = os.environ.get("LANGCHAIN_RECURSION_LIMIT", None)
+                max_concurrency = os.environ.get("LANGCHAIN_MAX_CONCURRENCY", None)
+
+                if recursion_limit is not None:
+                    graph_config["recursion_limit"] = int(recursion_limit)
+                if max_concurrency is not None:
+                    graph_config["max_concurrency"] = int(max_concurrency)
+
                 # Stream the output at debug time
                 if self.context.job_id is None:
                     # Get final chunk while streaming