## System details

AMD Ryzen 7 9700X, NVIDIA RTX 5070 (hybrid), Omarchy 4.0.3-1, sunshine 2026.516.143833-4.1 (from the omarchy repo)

## What's wrong?

`omarchy install service sunshine` installs the package, then dies at the service-enabling step, silently skipping the rest of the setup (firewall ports, admin webapp, autostart).

```
$ omarchy install service sunshine
...
(4/4) 正在安装 sunshine                                                          [-----------------------------------------------] 100%
...
Failed to enable unit: Unit sunshine.service does not exist
```

### Root cause

`omarchy-install-service-sunshine` runs:

```bash
omarchy-pkg-add sunshine
systemctl --user enable --now sunshine
```

However, the sunshine package only ships a single user unit:

```
$ pacman -Ql sunshine | grep systemd
sunshine /usr/lib/systemd/user/app-dev.lizardbyte.app.Sunshine.service
```

That unit declares an alias rather than being named `sunshine.service` directly:

```ini
[Install]
WantedBy=graphical-session.target
Alias=sunshine.service
```

The `sunshine.service` alias symlink only comes into existence **after** the unit has been enabled by its real name, so enabling by the alias name on a fresh install cannot resolve the unit (chicken-and-egg).

### Consequences

The script uses `set -e`, so it aborts immediately after the package install. Everything after the failed `systemctl` line is skipped with no indication:

- Moonlight streaming UFW ports are never opened (`open_ufw_ports`)
- The "Sunshine Admin" webapp is never installed (`install_admin_webapp`)
- The Hyprland autostart entry is never added (`enable_hyprland_autostart`)

Result: a half-installed sunshine (not running, firewall closed) that looks installed.

### Reproduction

1. Fresh Omarchy 4.0.3-1 install
2. `omarchy install service sunshine`
3. Observe the `Failed to enable unit: Unit sunshine.service does not exist` error
4. Verify the leftovers: `systemctl --user status sunshine` (not found), `sudo ufw status | grep omarchy-sunshine` (no rules), no Sunshine Admin webapp, nothing appended to `~/.config/hypr/autostart.lua`

### Workaround

Enable by the real unit name:

```bash
systemctl --user enable --now app-dev.lizardbyte.app.Sunshine.service
```

This works, starts sunshine, and (as a side effect) creates the `sunshine.service` alias symlink — after which the script's original command would also resolve.

### Suggested fix

In `omarchy-install-service-sunshine`, enable the unit by its shipped name:

```bash
systemctl --user enable --now app-dev.lizardbyte.app.Sunshine.service
```

(and optionally rerun the installer's remaining steps if supporting already-installed systems matters).