Filter files or folders by name

There is no search field anywhere in the app where a user can search for a file/folder by its name. For example, I might want to find a file called "vouchers.pdf" so that I can tag it easily

Start by locating the file and folder browsing screen and the existing tagging flow in the Android app. Trace how items are displayed and selected, then define the search behavior from the issue: entering a name such as "vouchers.pdf" should find the matching file or folder so it can be tagged. No source files or tests are named in the issue.

Written by the indexing model from the issue text.