Make directories stand out more

src/activities/home/FileBrowserActivity.cpp

@@ -238,7 +238,7 @@ void FileBrowserActivity::loop() {
 
 std::string getFileName(std::string filename) {
   if (filename.back() == '/') {
-    return filename.substr(0, filename.length() - 1);
+    return "[" + filename.substr(0, filename.length() - 1) + "]";
   }
   const auto pos = filename.rfind('.');
   return filename.substr(0, pos);