Add agent module with configuration and state management

agent/__init__.py

@@ -0,0 +1,11 @@
+from .agent import get_agent
+from .config import create_agent_config
+from .prompts import (
+    DEFAULT_PROMPT
+)
+
+__all__ = [
+    "get_agent", 
+    "create_agent_config", 
+    "DEFAULT_PROMPT"
+]

agent/config.py

@@ -0,0 +1,17 @@
+from typing import Literal
+
+def create_agent_config(app_name: str) -> dict:
+    """
+    Create configuration for the agent.
+    
+    Args:
+        app_name: Name of the application
+    
+    Returns:
+        Configuration dictionary for the agent
+    """
+    return {
+        "configurable": {
+            "app_name": app_name
+        }
+    }

agent/state.py

@@ -0,0 +1,6 @@
+from typing import Literal, TypedDict, Sequence, Annotated
+from langgraph.graph import add_messages
+from langchain_core.messages import BaseMessage
+
+class State(TypedDict):
+    messages: Annotated[Sequence[BaseMessage], add_messages]