Fix installed service and launcher paths; wait for the pointer helper

The service and menu-entry templates still pointed at the old frametop/
subfolder, so the pointer helper, input relay, and settings apps couldn't
start after a clean install. The pointer helper's install step also failed
when the service was still starting after 3 s; it now waits up to 20 s and
doesn't abort the installer.

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

display-settings/ft-display-settings.desktop

@@ -3,7 +3,7 @@ Type=Application
 Name=Frametop Display Settings
 GenericName=Screens and layout for the VR desktop
 Comment=Number of screens, resolution, scale, and where they float around you
-Exec=@REPO@/frametop/display-settings/ft-display-settings
+Exec=@REPO@/display-settings/ft-display-settings
 Icon=video-display
 Categories=Settings;HardwareSettings;
 Keywords=display;screen;monitor;resolution;layout;arrange;steamvr;frametop;

display-settings/ft-layout-reset.desktop

@@ -3,7 +3,7 @@ Type=Application
 Name=Reset Screen Layout
 GenericName=Put the VR desktop's screens back in their layout
 Comment=Float the screens and arrange them in the layout from Frametop Display Settings
-Exec=@REPO@/frametop/layout/ft-layout apply
+Exec=@REPO@/layout/ft-layout apply
 Icon=view-restore
 Categories=Settings;
 Keywords=display;screen;layout;arrange;reset;steamvr;frametop;

display-settings/ft-screens-toggle.desktop

@@ -3,7 +3,7 @@ Type=Application
 Name=Hide/Show Screens
 GenericName=Hide or show the VR desktop's screens
 Comment=Hide the screens (and SteamVR's laser) for a VR game; press again to bring them back
-Exec=@REPO@/frametop/layout/ft-layout toggle
+Exec=@REPO@/layout/ft-layout toggle
 Icon=view-visible
 Categories=Settings;
 Keywords=display;screen;hide;show;steamvr;frametop;