## Summary

On an Omarchy system booting with Limine and a UKI, a boot-time message appears before userspace starts:

```text
/systemd/src/boot/random-seed.c:216@process_random_seed: Failed to open random seed file: Not found
```

The system boots successfully and no matching warning appears in `journalctl` after boot. The issue appears to happen in `systemd-stub` inside the UKI, not in userspace services.

## Environment

- OS: Omarchy / Arch Linux
- Boot loader: Limine 12.3.3
- UKI path: `/boot/EFI/Linux/omarchy_linux.efi`
- ESP / boot mount: `/boot`
- Filesystem: `vfat`
- systemd package/stub seen in UKI strings: `systemd-stub 261.1-1-arch`
- Secure Boot: disabled
- TPM2: supported

## Evidence collected

`bootctl status` reports:

```text
systemd-boot not installed in ESP.
Current Boot Loader:
        Product: Limine 12.3.3
       Features: ...
                 ✗ Support for passing random seed to OS
      Partition: /dev/disk/by-partuuid/8bbff3af-a3ef-4720-94dd-d615caade743
         Loader: └─/boot/EFI/Linux/omarchy_linux.efi
  Current Entry: Omarchy/linux
```

`bootctl --print-stub-path` reports:

```text
/boot/EFI/Linux/omarchy_linux.efi
```

`/boot/loader/random-seed` exists and is owned by root:

```text
/boot/loader/random-seed
Size: 32
Access: (0600/-rw-------)  Uid: (0/root)  Gid: (0/root)
```

EFI variables include both Loader and Stub variables, including:

```text
LoaderSystemToken-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
StubDevicePartUUID-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
StubImageIdentifier-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
StubInfo-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
```

Userspace random seed service is healthy:

```text
systemd-random-seed.service - Load/Save OS Random Seed
Active: active (exited)
ExecStart=/usr/lib/systemd/systemd-random-seed load (code=exited, status=0/SUCCESS)
```

`systemd-boot-random-seed.service` was masked temporarily as a test and the message still appeared on reboot, which suggests the visible warning is not emitted by the userspace service:

```text
Loaded: masked
Active: inactive (dead)
```

## Related issue

This appears adjacent to, but not the same as, #5377.

#5377 covers userspace warnings like:

```text
Mount point '/boot' which backs the random seed file is world accessible
Random seed file '/boot/loader/random-seed' is world accessible
```

That part was fixed locally by changing the vfat mount masks from:

```text
fmask=0022,dmask=0022
```

to:

```text
fmask=0177,dmask=0077
```

After remounting, `/boot/loader/random-seed` correctly appears as `0600`, and `journalctl -b -p warning --no-pager | grep -i "random\|seed\|boot\|limine\|uki"` returns no output.

However, the early visual boot message still appears.

## Steps to reproduce

1. Boot Omarchy using Limine with the generated UKI at `/boot/EFI/Linux/omarchy_linux.efi`.
2. Observe early boot output before userspace starts.
3. The message appears:

```text
/systemd/src/boot/random-seed.c:216@process_random_seed: Failed to open random seed file: Not found
```

## Expected behavior

If Omarchy's supported boot path is Limine + UKI, boot should not show a systemd-stub random-seed warning when:

- `/boot/loader/random-seed` exists,
- `LoaderSystemToken` exists,
- `systemd-random-seed.service` succeeds,
- and the system is otherwise booting normally.

Alternatively, if this warning is expected/harmless with Limine, it would be useful to document it in troubleshooting guidance.

## Actual behavior

A visible pre-userspace warning appears on boot, but the system boots normally and userspace logs do not show a corresponding warning after boot.

## Notes

This may be a compatibility edge between:

- Limine,
- Omarchy UKIs using systemd-stub,
- systemd 261 stub random-seed handling,
- and the fact that `bootctl status` reports Limine does not support passing random seed to the OS.

I am not suggesting switching bootloaders. I am reporting this because Omarchy appears to use Limine by default, and the warning is confusing for users because common advice for `/var/lib/systemd/random-seed` does not apply here.