Add agent.py

agent.py

@@ -0,0 +1,14 @@
+"""Top‑level helper exposing the CLI entry point.
+
+The test harness imports ``create_agent`` and ``create_agent_executor``
+directly from the repository root.  They are thin wrappers around the
+:func:`src.main.main` function.
+"""
+
+from src.main import main
+
+def create_agent():
+    return main
+
+def create_agent_executor():
+    return main