chore: bump version to 1.31.0 and add changelog entry for agent instruction improvements

tests/test_commands.py

@@ -229,8 +229,7 @@ class TestReviewFile:
 
     @patch("rp.commands.handlers.read_file")
     @patch("rp.core.assistant.process_message")
-    @patch("asyncio.create_task")
-    async def test_review_file_success(self, mock_create_task, mock_process, mock_read):
+    def test_review_file_success(self, mock_process, mock_read):
         mock_read.return_value = {"status": "success", "content": "test content"}
         review_file(self.assistant, "test.py")
         mock_read.assert_called_once_with("test.py")
@@ -697,3 +696,4 @@ class TestShowBackgroundEvents:
     def test_show_events_exception(self, mock_get):
         mock_get.side_effect = Exception("test")
         show_background_events(self.assistant)
+