Idle Screen

When no media is playing, the idle screen follows RuntimeMode:

Formal / Normal entry: black, unless idle_screen.image_path points to a readable image.
Maintenance entry: the local guide (QR, address, open Web Console). Maintenance ignores image_path.

{
  "idle_screen": {
    "image_path": "",
    "fill_mode": "fill"
  }
}

Full diagnostic idle (IP tables, Debug panel button, etc.) appears only in a process started with --maintenance.

Custom background image

{
  "idle_screen": {
    "image_path": "C:\\DearScenario Player\\assets\\idle_background.png",
    "fill_mode": "fit"
  }
}

fill_mode is used only when image_path is set. An empty path is a black idle; changing fill mode has no visible effect until you set an image.

Mode	Behavior
`fill`	Preserve aspect ratio, crop to cover the screen.
`fit`	Preserve aspect ratio, scale until fully visible.
`stretch`	Ignore aspect ratio, stretch to fill screen.