Thanks for the feedback - I’d actually say having a project/folder panel was the top HyperEdit request that we got.
The Watched Files panel (in the Command-1 File Inspector) automatically populates from HTTP requested resources, but doesn’t dive into what other PHP files might needed to compose the rendered HTML. You can manually add any PHP files you want to the table to watch for a reload, or their enclosing folder.
I was doing some scheming of combining the watched files with a folder navigator and using the macOS tabs… but that didn’t quite make the cut for 2.0 since the primary goal has been to modernize the code.