fix: correct logger name from "pr" to "rp" in test assertions and remove assistant version banner print

tests/test_logging.py

@@ -20,7 +20,7 @@ class TestLogging:
         result = setup_logging(verbose=False)
 
         mock_makedirs.assert_called_once_with("/tmp/logs", exist_ok=True)
-        mock_get_logger.assert_called_once_with("pr")
+        mock_get_logger.assert_called_once_with("rp")
         mock_logger.setLevel.assert_called_once_with(20)  # INFO level
         mock_handler.assert_called_once()
         assert result == mock_logger
@@ -49,7 +49,7 @@ class TestLogging:
         result = setup_logging(verbose=True)
 
         mock_makedirs.assert_not_called()
-        mock_get_logger.assert_called_once_with("pr")
+        mock_get_logger.assert_called_once_with("rp")
         mock_logger.setLevel.assert_called_once_with(10)  # DEBUG level
         mock_logger.handlers.clear.assert_called_once()
         mock_file_handler.assert_called_once()
@@ -63,7 +63,7 @@ class TestLogging:
 
         result = get_logger()
 
-        mock_get_logger.assert_called_once_with("pr")
+        mock_get_logger.assert_called_once_with("rp")
         assert result == mock_logger
 
     @patch("rp.core.logging.logging.getLogger")