So, after a touch more work on ByteHoard3 (well, perhaps a bit more) I have uploads and downloads working, along with deletion. The usual screenshots are attached, but basically the uploader currently creates little progress bars below the upload form with details about each file, which turn green or red at the end depending on completion or failure.
The download works exactly as all other downloads do - click and your browser bugs you about what you should do, and optionally how evil files might be. The delete action has an inline confirmation, although I may have to redesign it as I develop on a widescreen and it doesn't like anything slimmer at the moment.
