fix(apps,launch): remove _sandbox_z_drive from install_app and launch_external_exe

Installer paths (e.g. /home/.../.cache/wine-installers/GOG_Galaxy.exe) are absolute Linux paths that Wine resolves via Z:→/. Sandboxing Z: before the installer runs redirects Z: to an empty directory, so msiexec and proton-run can no longer find the installer file — hence all launchers failing with 'wine: could not open working directory' and the exe-not-found error. _sandbox_z_drive belongs only in launch_app, where the launcher exe is inside the prefix (C:) and does not need Z: access, and where the GOG disk-space false-positive originates.

Author: xaoscience

lib/apps.sh

@@ -29,7 +29,6 @@ install_app() {
     unset PROTON_LOG PROTON_LOG_DIR
     mkdir -p "$WINE_DIR/steam-root"
     mkdir -p "$WINEPREFIX"
-    _sandbox_z_drive
     _map_external_drives
 
     # First run builds the prefix (copies thousands of DLLs) before the installer

lib/launch.sh

@@ -116,7 +116,6 @@ launch_external_exe() {
         export PROTON_LOG_DIR="$WINE_DIR"
         mkdir -p "$WINE_DIR/steam-root"
         mkdir -p "$WINEPREFIX"
-        _sandbox_z_drive
         "$PROTON_DIR/proton" run "$exe_path" &
     else
         print_warning "Proton not available, using Wine fallback"