When you enable developer mode, you get a dump of your widgets onto the filesystem, but the hierarchy is all GUIDs. I strolled through the DB a little, trying to find an obvious way to map that guid ABCD1234etc is my custom widget "Show Interesting Content". Is it stored in the DB, or another place on the filesystem?
In developer mode, widgets are fully defined in the file system. The folder structure is defaultwidgets/[FACTORY DEFAULT PROVIDER ID]/[WIDGET ID].xml (if the widget is not theme-versioned)
Assuming your widgets are all in the same factory default provider, they'll all be .XML files within your factory default provider's folder. Note that developer mode is not intended for file system editing, it is primarily for version control. The file naming is to optimize site load time.
that's close. Those seem to have the name stored in an XML file in the root of each GUID.
My problem is, I created a new widget that lives under filestorage/widgetfiles/GUID/d. It's this stuff that I'm trying to find the widget name of. Also, I don't see the core content component for any of the widgets in this path.