This is far from done, but nonetheless constitutes a big improvement.
macOS application bundles are more or less necessary for:
- showing a nice icon;
- having spawned off instances actually be brought to the foreground;
- file associations (yet files currently do not open properly);
- having a reasonable method of distribution.
Also resolving a bunch of minor issues:
- The context menu had duplicate items,
and might needlessly end up with (null) labels.