## What happened

After switching to Integrated mode via `Super+Ctrl+H > Hybrid GPU` (`omarchy-toggle-hybrid-gpu`), the system intermittently gets stuck in `Vfio` mode after suspend/resume. Once stuck, the same menu entry fails with:

```
Hybrid GPU not found or in unknown mode.
```

because `bin/omarchy-toggle-hybrid-gpu` only handles `Integrated`/`Hybrid` in its `case` statement and falls through to `*)` for `Vfio`.

## Why it strands in Vfio

`default/systemd/system-sleep/force-igpu` `post` does `Vfio -> Integrated` on every resume while in Integrated mode. `supergfxctl -m` persists each step immediately, so if the second transition fails the config is left at `"mode": "Vfio"`. The restore marker is in `/run/` (tmpfs), so a reboot wipes the recovery state and the machine boots straight into `Vfio` with nothing to restore it.

Two failures on this machine, identical signature:

```
Sep 13 11:33:46 Switching gfx mode to Vfio / Graphics mode changed to Vfio
Sep 13 11:33:47 Switching gfx mode to Integrated / Graphics mode changed to Integrated
Sep 13 11:33:47 UnbindRemoveGpu: No such file or directory (os error 2)
Sep 13 11:33:48 rmmod nvidia_drm failed: "rmmod: ERROR: Module nvidia_drm is in use"
Sep 13 11:33:58 Could not confirm the GPU transition to Integrated mode
Sep 13 11:33:58 '/usr/lib/systemd/system-sleep/force-igpu' failed with exit status 1.

Sep 14 21:53:55 Switching gfx mode to Vfio / Graphics mode changed to Vfio
Sep 14 21:53:56 Switching gfx mode to Integrated / Graphics mode changed to Integrated
Sep 14 21:53:56 UnbindRemoveGpu: No such file or directory (os error 2)
Sep 14 21:53:57 rmmod nvidia_drm failed: "rmmod: ERROR: Module nvidia_drm is in use"
Sep 14 21:54:07 Could not confirm the GPU transition to Integrated mode
```

The same hook succeeded 8+ times in the prior week (`Sep 9/10/13/14`), so it is a race, not a deterministic failure. Likely contributors on this machine: `quickshell` (Omarchy 4 shell) holds `/dev/nvidia0,nvidia-uvm,nvidia-modeset` across resume, plus `ollama.service` (`pid 1248 (ollama) is holding /dev/nvidia0. Killing` in logs), plus nvidia `580.159.04 -> 580.178.04` / kernel `7.1.9 -> 7.2.3`.

## Expected

1. A failed resume hook should never leave the persistent config stranded in the intermediate `Vfio` state (retry, revert config, or keep the marker so the next boot/post can recover).
2. `omarchy-toggle-hybrid-gpu` should handle `Vfio` (and other real modes like `Dedicated`/`AsusMuxDgpu`) instead of `Hybrid GPU not found or in unknown mode` — at minimum offer recovery back to `Hybrid`/`Integrated`, since that is the only UI users get via `Super+Ctrl+H`.

## Steps to reproduce

1. On a dual-GPU laptop, `Super+Ctrl+H > Hybrid GPU` to switch `Hybrid -> Integrated`, reboot.
2. Suspend/resume repeatedly with something holding `nvidia_drm` (e.g. a GPU app + `ollama.service` enabled).
3. Eventually `post` fails as above; `supergfxctl -g` returns `Vfio`, `/etc/supergfxd.conf` says `"mode": "Vfio"`.
4. After next reboot, still `Vfio`; `Super+Ctrl+H > Hybrid GPU` prints `Hybrid GPU not found or in unknown mode.` and exits 1.

## System details

- Omarchy: `4.0.3-1` (channel package), upstream default branch `quattro`
- `supergfxctl 5.2.7-2`, `supergfxd 5.2.7`, kernel `7.2.3-arch1-3`
- `nvidia-580xx-dkms/utils 580.178.04-1.1`
- CPU: `Intel i5-9300H`, iGPU `CoffeeLake-H GT2 [UHD 630] (00:02.0)`, dGPU `NVIDIA GP107M [GTX 1050 3 GB Max-Q] (01:00.0, subsys HP 103c:85fa)` — supported modes `[Integrated, Hybrid, Vfio]`
- `force-igpu` + `delay-start.conf` installed by the toggle (expected for Integrated); hook source matches upstream `quattro` as of filing.

## Suggested fix directions

- `bin/omarchy-toggle-hybrid-gpu`: add a `Vfio` (and ideally `Dedicated`/MUX) arm that offers to return to `Hybrid`/`Integrated` with the same cleanup the `Integrated -> Hybrid` path does (remove `force-igpu` + `delay-start.conf`), instead of the `*)` dead-end.
- `force-igpu`: don't persist the intermediate state — e.g. on `post` failure, rewrite `/etc/supergfxd.conf` back toward `Integrated` and/or preserve the restore marker across reboot (not `/run`-only) so the next boot can retry; consider `KillNvidia`-style holder handling or a bounded retry before giving up.
- Docs: note the hook is primarily for Asus G14-style mux behavior; non-Asus muxless laptops (like this HP) still get it installed unconditionally when entering Integrated mode.

## Workaround (verified on this machine)

```bash
supergfxctl -m Hybrid
sudo rm -rf /usr/lib/systemd/system-sleep/force-igpu /etc/systemd/system/supergfxd.service.d/delay-start.conf
sudo systemctl daemon-reload
sudo reboot
# verify: supergfxctl -g -> Hybrid
```