feat: add thread info and status reads

tests/test_ops.py

@@ -39,3 +39,21 @@ def test_ops_join_and_delete():
     assert c in t2.participants
     ops.delete_agent(s, c.id)
     assert s.get_agent_by_id(c.id) is None
+
+
+def test_ops_thread_info_and_read_state():
+    s = InMemoryStore()
+    a = ops.get_or_create_agent(s, "A")
+    b = ops.get_or_create_agent(s, "B")
+    t = ops.create_thread(s, {a, b})
+    latest = ops.append_message(s, t.id, a, "hello")
+
+    info = ops.get_thread_info(s, t.id)
+    state = ops.get_thread_read_state(s, t.id, b)
+
+    assert info is not None
+    assert info.thread == t
+    assert info.latest_message == latest
+    assert state.agent == b
+    assert state.unread_count == 1
+    assert state.unread_from_others_count == 1