Make hidden context after cancellation more explicit

Author: jiwon-oai

chatkit/server.py

@@ -365,7 +365,7 @@ async def handle_stream_cancelled(
                 thread_id=thread.id,
                 created_at=datetime.now(),
                 id=self.store.generate_item_id("sdk_hidden_context", thread, context),
-                content="The user cancelled the stream.",
+                content="The user cancelled the stream. Stop responding to the prior request.",
             ),
             context=context,
         )

tests/test_chatkit_server.py

@@ -271,7 +271,10 @@ def generate_item_id(
         )
         hidden_context_item = items.data[-1]
         assert hidden_context_item.type == "sdk_hidden_context"
-        assert hidden_context_item.content == "The user cancelled the stream."
+        assert (
+            hidden_context_item.content
+            == "The user cancelled the stream. Stop responding to the prior request."
+        )
 
         assistant_message_item = await server.store.load_item(
             thread.id, "assistant-message-pending", DEFAULT_CONTEXT
@@ -331,7 +334,10 @@ def generate_item_id(
         )
         hidden_context_item = items.data[-1]
         assert hidden_context_item.type == "sdk_hidden_context"
-        assert hidden_context_item.content == "The user cancelled the stream."
+        assert (
+            hidden_context_item.content
+            == "The user cancelled the stream. Stop responding to the prior request."
+        )
 
         with pytest.raises(NotFoundError):
             await server.store.load_item(