Migrate WSLg, video acceleration, and /run/user improvements from pengwin-enterprise

[Copilot]

Ports improvements from pengwin-enterprise-rootfs-builds to enhance WSL2 GUI support, particularly WSLg integration and hardware acceleration.

Changes

New files:

• create_userpath.sh - Ensures /run/user/<uid> exists with correct ownership
• create_userpath.sudoers - Grants wheel group passwordless access

00-remix.sh:

• WSLg support: symlinks /mnt/wslg/runtime-dir/{wayland-0,wayland-0.lock} and pulse sockets to /run/user/<uid>
• Sets XDG_RUNTIME_DIR when systemd unavailable
• Adds WAYLAND_DISPLAY to environment persistence
• Enables D3D12 video acceleration via VDPAU_DRIVER, LIBVA_DRIVER_NAME, GALLIUM_DRIVER
• Switches DISPLAY detection from ipconfig.exe to route.exe with fallback to ip route
• Implements persistent dbus sessions via /tmp/dbus_env_*
• Refactored into main() function

00-remix.fish:

• Parallel WSLg socket setup and video acceleration variables
• SSH_CONNECTION early exit

create-targz.sh:

• Installs create_userpath files to /usr/local/bin and /etc/sudoers.d

Example

Before: GUI apps fail or have degraded performance due to missing /run/user and no hardware acceleration.

After: On shell init with WSLg:

# /run/user/1000 created with proper permissions
# Symlinks: /run/user/1000/wayland-0 -> /mnt/wslg/runtime-dir/wayland-0
# Symlinks: /run/user/1000/pulse/native -> /mnt/wslg/runtime-dir/pulse/native
# Environment: VDPAU_DRIVER=d3d12, LIBVA_DRIVER_NAME=d3d12, GALLIUM_DRIVER=d3d12

Original prompt

there are improvements implemented in /run/user and others in 00-wle.sh from the repo https://github.com/WhitewaterFoundry/pengwin-enterprise-rootfs-build that can be migrated to this repo in the 00-remix.* files

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.