geez.. finally!

the trick for electron-builder as setup in patchbay-builder (where the source is inside the app/ folder), is to add a fileSet like this to the build.extraFiles:

    "extraFiles": [
      {
        "from": "app/node_modules/forked-systray/systrayhelper",
        "to": "systrayhelper"
      }
    ],

relevant links:

• https://electronjs.org/docs/tutorial/application-packaging
• https://www.electron.build/configuration/contents#extrafiles

ps: this changes also seems to remove the fallback to js problem.