Update email_rag/rag_sessions.py

email_rag/rag_sessions.py

@@ -3,7 +3,7 @@ import uuid
 
 SESSIONS = {}  # session_id -> {thread_id, recent_turns, entity_memory}
 
-
+# Creates a fresh, empty entity memory
 def _init_entity_memory():
     """Create a fresh entity memory structure."""
     return {
@@ -13,7 +13,7 @@ def _init_entity_memory():
         "dates": [],
     }
 
-
+#Generate a new unique session id 
 def start_session(thread_id: str) -> str:
     """Create a new session fixed to a given thread."""
     sid = str(uuid.uuid4())
@@ -24,7 +24,7 @@ def start_session(thread_id: str) -> str:
     }
     return sid
 
-
+# If session exists → returns its dict. / If not → returns None
 def get_session(session_id: str):
     return SESSIONS.get(session_id)