Frametop: a multi-screen desktop and universal 3D mouse for the Steam Frame

Several KDE Plasma screens floating in SteamVR, each a real monitor of any
resolution and shape, shown by our own compositor (ft-screens), with a
layout, wrist pinning, and visibility modes; a Bluetooth mouse that drives
all of SteamVR as a room-anchored 3D pointer (input relay, ft-pointer
helper, ft_pointer SteamVR driver); two settings apps; and Bluetooth LE
fixes. Installs on the headset with ./install.sh.

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

display-settings/install.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Install (or remove) Frametop Display Settings and the Reset Screen Layout and Hide/Show Screens
+# entries on the Frame, with global shortcuts in the Frametop desktop: Meta+Shift+R and
+# Meta+Shift+H (they take effect the next time the desktop starts).
+# Usage: display-settings/install.sh [install|uninstall]
+set -euo pipefail
+root=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+. "$root/scripts/_env.sh"
+"$root/scripts/sync.sh" >/dev/null
+apps=.local/share/applications
+shortcuts=.config/frametop/kglobalshortcutsrc
+case ${1:-install} in
+  install)
+    for f in ft-display-settings ft-layout-reset ft-screens-toggle; do
+      fill_template "$root/display-settings/$f.desktop" | on_frame "mkdir -p ~/$apps && cat > ~/$apps/$f.desktop"
+    done
+    on_frame "chmod +x display-settings/ft-display-settings layout/ft-layout layout/ft_layout.py
+mkdir -p ~/.config/frametop
+kwriteconfig6 --file ~/$shortcuts --group services --group ft-layout-reset.desktop --key _launch 'Meta+Shift+R'
+kwriteconfig6 --file ~/$shortcuts --group services --group ft-screens-toggle.desktop --key _launch 'Meta+Shift+H'"
+    echo "installed: Frametop Display Settings, Reset Screen Layout (Meta+Shift+R), Hide/Show Screens (Meta+Shift+H)" ;;
+  uninstall)
+    on_frame "rm -f ~/$apps/ft-display-settings.desktop ~/$apps/ft-layout-reset.desktop ~/$apps/ft-screens-toggle.desktop
+[ -f ~/$shortcuts ] && for f in ft-layout-reset ft-screens-toggle; do kwriteconfig6 --file ~/$shortcuts --group services --group \$f.desktop --key _launch --delete; done
+echo removed" ;;
+  *) echo "usage: $0 [install|uninstall]" >&2; exit 2 ;;
+esac