This folder contains the extension's toolbar icons:
  icon16.png   (16x16,  toolbar / context menus)
  icon48.png   (48x48,  extension management page)
  icon128.png  (128x128, install dialog / Web Store)

These were pre-generated for this build and match the design in
hermes-watch/tools/make-icons.html (dark circle, orange ring, inner dot).

To regenerate (e.g., if the design changes):
  1. Open hermes-watch/tools/make-icons.html in any browser.
  2. Click "Generate and Download". Three PNGs will download into your
     browser's Downloads folder.
  3. Move them into this folder, replacing the existing files.
