Keep the controllers in VR games while the screens stay up

Visible screens kept SteamVR's laser mouse on, which takes the controllers
away from a VR game. Now, by default, that's off while a scene app runs:
the screens stay over the game and the 3D mouse or the dashboard works
them. Frametop Display Settings has the choice (always, except during VR
games, only with the dashboard open); the socket command is controllers.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -54,7 +54,8 @@ After the restart:
 | Drag the roll button sideways, or scroll on it | Rolls the screen; it snaps level near straight |
 | While carrying a screen, sweep its laser across your other controller's ring, then let go | Pins it to that wrist, at its size and distance, as you hold it when you let go; it shows while you see its front. Grab its bar to adjust it (it stays pinned); sweep across the ring again to take it off |
 | Meta+Shift+R in the desktop | Puts the screens back in their layout (also the **Reset Screen Layout** menu entry, and a button you can map) |
-| Meta+Shift+H in the desktop | Hides or shows all screens, for a VR game (also **Hide/Show Screens** and a mappable button). **Frametop Display Settings → Visibility & wrist** can instead show them only with the dashboard open, or while you look at your wrist |
+| Meta+Shift+H in the desktop | Hides or shows all screens (also **Hide/Show Screens** and a mappable button). **Frametop Display Settings → Visibility & wrist** can instead show them only with the dashboard open, or while you look at your wrist |
+| Play a VR game | The screens stay up over it, and your controllers stay in the game. Work the screens with the 3D mouse, or open the SteamVR dashboard. (**Visibility & wrist → Controllers on the screens** changes this.) |
 
 Map the mouse's extra buttons to actions such as **Toggle SteamVR dashboard** or **Recenter pointer** in **Frametop Input Settings → Buttons**. Speed, dot size, and the rest are on its **Pointer** page and apply immediately.