Make an html/javascript interface/front-end for spectie's concordancer, meant for local use. It should have a box to specify the local path of a corpus, as well as a search box. Results should be returned without reloading the page. Ideally, you should use something like bottlepy for this, and convert the concordancer for use as a library that the server can load. Make it streamlined both in look and speed (no bloat, please), and make it load results dynamically (via AJAX or similar).