### What happened

`install/hardware/intel/video-acceleration.sh` silently fails to install a VA-API driver on machines whose integrated GPU reports itself as `Intel Graphics` rather than `HD Graphics` / `Iris` / `Xe` — most notably **Meteor Lake**, which is the entire current Omarchy-on-Intel mainstream.

The script's detection regex:

```bash
if [[ ${INTEL_GPU,,} =~ (hd\ graphics|uhd\ graphics|xe|iris|arc|panther\ lake) ]]; then
  omarchy-pkg-add intel-media-driver libvpl vpl-gpu-rt
elif [[ ${INTEL_GPU,,} =~ "gma" ]]; then
  omarchy-pkg-add libva-intel-driver
fi
```

does not match `00:02.0 VGA compatible controller: Intel Corporation Meteor Lake-P [Intel Graphics] (rev 08)`. No branch fires, no package is installed, and the script exits 0 — so the failure is completely silent.

Reproduced on this machine:

```
$ GPU=$(lspci | grep -iE 'vga|3d|display' | grep -i 'intel')
$ echo "$GPU"
00:02.0 VGA compatible controller: Intel Corporation Meteor Lake-P [Intel Graphics] (rev 08)
$ if [[ ${GPU,,} =~ (hd\ graphics|uhd\ graphics|xe|iris|arc|panther\ lake) ]]; then echo MATCH; else echo "NO MATCH"; fi
NO MATCH
```

Resulting state — `/usr/lib/dri/` has no Intel video driver at all:

```
$ ls /usr/lib/dri/ | grep -Ei 'iHD|radeonsi|iris|nvf'
iris_dri.so
radeonsi_dri.so
radeonsi_drv_video.so
```

### Why this matters

The visible symptom is in Sunshine. `omarchy install service sunshine` completes (once the unrelated unit-name bug is worked around), Sunshine starts, and logs this:

```
Info: Trying encoder [vaapi]
Info: Creating encoder [h264_vaapi]
Info: Encoder [vaapi] failed
Info: Found H.264 encoder: libx264 [software]
```

It falls back to CPU encoding, which is not a Sunshine problem — Sunshine is correctly reporting that no VA-API driver exists. On a Meteor Lake the hardware encoder is fully capable of H.264, H.265 and AV1, so this leaves capable hardware idle for software x264.

The same missing driver degrades any other VA-API consumer (screen recording, `ffmpeg` transcode, hardware-accelerated video playback in Chromium).

Note this is *not* the same as #7752 / #9048 / #12054, which are about the `omarchy/sunshine` package being built without CUDA so NVIDIA users lose NVENC. Those are NVIDIA-side. This one is the Intel install script never installing `intel-media-driver` in the first place.

### Steps to reproduce

1. On an Omarchy install with a Meteor Lake (or any Intel iGPU enumerating as plain `Intel Graphics`) integrated GPU.
2. `ls /usr/lib/dri/` — no `iHD_drv_video.so`.
3. `omarchy install service sunshine`, then check the encoder line in the log as above.

### Suggested fix

Match the modern Intel branding more broadly rather than enumerating marketing names, e.g. keying off the PCI device ID / `Meteor Lake|Phoenix Lake|Raptor Lake|Alder Lake` and defaulting unknown Intel iGPUs to the `intel-media-driver` branch instead of falling through silently. Failing that, make the fall-through visible so the user is told the driver was skipped.

### System details

| | |
|---|---|
| Omarchy | 4.0.4-1 |
| Kernel | 7.2.5-3-omarchy |
| GPU | Intel Meteor Lake-P [Intel Graphics] (rev 08), driver `i915` |
| Sunshine | omarchy/sunshine 2026.516.143833-4.1 |
| libva | 2.24.1-1 |
| `intel-media-driver` | not installed |

Happy to provide `vainfo` output after installing the driver manually to confirm the hardware encoder path works once `iHD_drv_video.so` is present.