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>

input-settings/install.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Install (or remove) the Frametop Input Settings menu entry on the Frame.
+# Usage: input-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
+case ${1:-install} in
+  install)
+    fill_template "$root/input-settings/ft-input-settings.desktop" |
+      on_frame "chmod +x input-settings/ft-input-settings && mkdir -p ~/.local/share/applications && cat > ~/.local/share/applications/ft-input-settings.desktop"
+    echo "installed: Frametop Input Settings (Plasma menu, Settings)" ;;
+  uninstall) on_frame 'rm -f ~/.local/share/applications/ft-input-settings.desktop; echo removed' ;;
+  *) echo "usage: $0 [install|uninstall]" >&2; exit 2 ;;
+esac