Update app.py

app.py

@@ -1,6 +1,7 @@
 import gradio as gr
 from langgraph.graph import StateGraph, END
 from langgraph.checkpoint.memory import MemorySaver
+from langgraph.checkpoint.sqlite import SqliteSaver
 import operator
 from typing import TypedDict, Annotated, Optional
 import uuid
@@ -49,7 +50,11 @@ builder.add_edge("human_response_display", END)
 
 # --- Checkpointer and Graph Compilation ---
 # Using MemorySaver as requested
-global_memory_saver = MemorySaver()
+#global_memory_saver = MemorySaver()
+
+SQLITE_DB_PATH = "langgraph_checkpoints.sqlite" # This will be a file in your Space
+global_memory_saver = SqliteSaver.from_conn_string(SQLITE_DB_PATH)
+
 
 global_graph = builder.compile(
     checkpointer=global_memory_saver,