### What happened

On a MacBookPro13,3 (2016 15", T1 chip), the Touch Bar is completely dead after
a fresh install. The row is dark and no function keys are available.

Three separate causes stack up, all in the Omarchy install path:

**1. `fix-spi-keyboard.sh` installs the DKMS package but not `linux-headers`.**

`install/hardware/apple/fix-spi-keyboard.sh` runs:

```
omarchy-pkg-add macbook12-spi-driver-dkms
```

`linux-headers` is not a dependency of that package, and nothing else in the
install pulls it in for this code path. (`install/hardware/fix-bcm43xx.sh` does
add `dkms linux-headers` alongside `broadcom-wl`, so the omission looks
accidental.) Without headers DKMS silently never builds:

```
$ dkms status
(empty)
$ ls /var/lib/dkms/
(empty)
```

The install prints no error, so the machine boots looking healthy. Keyboard and
trackpad still work because the kernel's own in-tree `applespi` covers them —
only the Touch Bar is missing, which makes this easy to misread as an
unsupported-hardware problem.

**2. With headers installed, `macbook12-spi-driver` does not compile on kernel 7.1.**

```
$ sudo pacman -S linux-headers
...
==> dkms install --no-depmod macbook12-spi-driver/0+git.315 -k 7.1.9-arch1-2
Error! Bad return status for module build on kernel: 7.1.9-arch1-2 (x86_64)
```

Five instances of kernel API drift since the driver's last update (2019):

| File | Error | Kernel change |
|---|---|---|
| `apple-ib-tb.c:1293` | `initialization of 'void (*)(struct platform_device *)' from incompatible pointer type 'int (*)(...)'` | `platform_driver.remove` returns `void` (6.11+) |
| `apple-ib-als.c:679` | same | same |
| `apple-ibridge.c:752` | `initialization of 'const __u8 *(*)(...)' from incompatible pointer type '__u8 *(*)(...)'` | `hid_driver.report_fixup` returns `const __u8 *` |
| `apple-ibridge.c:901` | `'struct acpi_driver' has no member named 'owner'` | `.owner` removed from `struct acpi_driver` |
| `applespi.c:64` | `fatal error: asm/unaligned.h: No such file or directory` | renamed to `linux/unaligned.h` (6.12+) |

The mainline drivers do not cover this hardware, so there is no fallback:
`hid-appletb-kbd`, `hid-appletb-bl` and `appletbdrm` all match only `05AC:8302`
/ `05AC:8102`, which are T2 Macs. The T1 iBridge is `05AC:8600`.

**3. Even once built, `apple-ibridge` loses a driver race against `hid-sensor-hub`.**

Both HID interfaces of the iBridge expose modalias
`hid:b0003g0003v000005ACp00008600`. `hid-sensor-hub` claims it with a generic
vendor/product match; `apple-ibridge` claims it via
`HID_USB_DEVICE(0x05AC, 0x8600)`. Both match, so whichever registers first wins
— and udev loads `hid-sensor-hub` from modalias as soon as USB enumerates,
well before `systemd-modules-load` gets to `apple-ibridge`:

```
kernel: hid-sensor-hub 0003:05AC:8600.0002: hiddev96,hidraw1: USB HID v1.01 Device [Apple Inc. iBridge]
kernel: apple_ibridge: loading out-of-tree module taints kernel
kernel: apple-ibridge-hid 0003:05AC:8600.0001: input,hidraw0: USB HID v1.01 Keyboard [Apple Inc. iBridge]
```

`apple-ibridge` recovers `.0001` from `hid-generic` but never gets `.0002`, and
the Touch Bar stays dark. Both platform devices bind and probe cleanly, so
nothing in the log suggests a failure.

### What was expected

A working Touch Bar on a Mac model that `fix-spi-keyboard.sh` explicitly
detects (`MacBookPro13,[123]` is in its regex).

### Steps to reproduce

1. Install Omarchy 4.0.2 on any T1 Mac (MacBookPro13,x or MacBookPro14,x).
2. Boot and look at the Touch Bar — dark.
3. `dkms status` → empty.

### Fix

All three parts were needed to get it working here:

1. Add `linux-headers` to the `omarchy-pkg-add` call in `fix-spi-keyboard.sh`.
2. Patch `macbook12-spi-driver` for the four API changes above. I excluded
   `applespi` from the DKMS build rather than fixing its one-line include, since
   the in-tree `applespi` is maintained, already works, and the DKMS copy would
   shadow it via `updates/dkms/` — the three iBridge modules don't reference it.
3. Ship a softdep so `apple-ibridge` registers first:

```
# /etc/modprobe.d/apple-ibridge.conf
softdep hid-sensor-hub pre: apple-ibridge
```

After all three, `apple-ibridge-hid` owns both `.0001` and `.0002` and the
Touch Bar works.

I'm happy to open a PR for items 1 and 3 if that's useful. Item 2 belongs in the
`macbook12-spi-driver-dkms` package rather than in the installer.

### System details

- Model: MacBookPro13,3 (Mac-A5C67F76ED83108C), Apple T1
- Omarchy: 4.0.2-1
- Kernel: 7.1.9-arch1-2
- CPU: Intel Skylake-H
- GPU: Intel HD Graphics 530 (i915) + AMD Radeon Pro 460 (amdgpu)
- iBridge: USB `05ac:8600`