But your definition is more a "Libertarian" one, rather than an Enlightenment, French style definition. "Liberal" in this sense is quite narrow. Especially when one realises that whatever the nature of the German government installed by Napoleon, it was still an enforced, foreign Government which almost by definition needs oppressive aspects. Napoleon did not always live up to the liberal ideas he espoused and was still partly influenced by 18th century French enlightenment notions of authoritarianism. A major aspect of Napoleon's brand of Liberalism was the removal of feudal and church authority: unlike the English brand of Liberalism, which focussed more upon economics, Napoleon's ideas were torn between retaining his grip and reshaping the society of Europe.
installing himself as a ruler ruling by devine right in new approved Catholic catechism.
Napoleon was never torn between retaining his grip and reshaping society. he was reshaping society to tighten his grip.