updates

lib/elixir_ai/data/schemas/message_schema.ex

@@ -0,0 +1,16 @@
+defmodule ElixirAi.Data.MessageSchema do
+  use Ecto.Schema
+
+  @primary_key {:id, :id, autogenerate: true}
+
+  schema "messages" do
+    belongs_to(:conversation, ElixirAi.Data.ConversationSchema, type: :binary_id)
+    field(:role, :string)
+    field(:content, :string)
+    field(:reasoning_content, :string)
+    field(:tool_calls, :map)
+    field(:tool_call_id, :string)
+
+    timestamps(inserted_at: :inserted_at, updated_at: false, type: :utc_datetime)
+  end
+end