feat(chat): added a new field into session response called last_messa… (#463)

* test(projects): fix flaky metadata filter test

Drop max_items=10 so all projects matching the metadata filter are
returned — accumulated projects from prior sessions were pushing the
current session's project out of the first 10 results.
Also raise stop_after_delay to 30s for indexing-lag resilience.

* feat(chat): added a new field into session response called last_message_at

---------

Co-authored-by: Prasad <prasad@albertinvent.com>

Author: prakashchandrahv

src/albert/resources/chats.py

@@ -53,14 +53,17 @@ class ChatSession(BaseResource):
         The display name of the session.
     parent_id : str | None
         Optional folder ID that contains this session.
-    source_session_id : str | None
-        Optional external session identifier for linking to a source system.
+    source_session_id : str
+        External session identifier for linking to a source system.
+    last_message_at : str | None
+        ISO 8601 timestamp of the most recent message in the session.
     """
 
     id: str | None = Field(default=None)
     name: str
     parent_id: str | None = Field(default=None, alias="parentId")
-    source_session_id: str | None = Field(default=None, alias="sourceSessionId")
+    source_session_id: str = Field(alias="sourceSessionId")
+    last_message_at: str | None = Field(default=None, alias="lastMessageAt")
 
 
 class ChatMessage(BaseResource):

tests/collections/test_projects.py

@@ -63,12 +63,11 @@ def test_project_search_metadata_filters(
 
     metadata_filters = {list_field: {"name": [list_name]}}
 
-    @retry(stop=stop_after_delay(10), wait=wait_fixed(2), reraise=True)
+    @retry(stop=stop_after_delay(30), wait=wait_fixed(2), reraise=True)
     def _search_and_assert():
         projects = list(
             client.projects.search(
                 metadata_filters=metadata_filters,
-                max_items=10,
             )
         )
         assert any(item.id == project.id for item in projects)

tests/conftest.py

@@ -917,7 +917,11 @@ async def seeded_session(
     async_client: AsyncAlbert, seed_prefix: str, seeded_folder: ChatFolder
 ) -> AsyncGenerator[ChatSession, None]:
     session = await async_client.chat_sessions.create(
-        session=ChatSession(name=f"{seed_prefix} Chat Session", parent_id=seeded_folder.id)
+        session=ChatSession(
+            name=f"{seed_prefix} Chat Session",
+            parent_id=seeded_folder.id,
+            source_session_id=str(uuid.uuid4()),
+        )
     )
     yield session
     with suppress(NotFoundError):