[Bug]: The action configured via "Open application" in the Actions Ring does not work (e.g., /usr/bin/nautilus, nautilus)

### Pre-flight checklist

- [x] I searched [existing issues](https://github.com/AprilNEA/OpenLogi/issues?q=is%3Aissue) and this is not a duplicate.
- [x] I am on the [latest release](https://github.com/AprilNEA/OpenLogi/releases/latest) or a recent `master` build.
- [x] I quit **Logi Options+** before running OpenLogi (the two apps fight over HID++ access and only one can own a receiver at a time).

### Which part of OpenLogi?

GUI (desktop app)

### OpenLogi version

0.7.4

### Operating system

Linux

### OS version & architecture

Ubuntu 26.04 LTS, GNOME Version 50, Wayland

### Device model

MX Master 3S + Logi Bolt receiver

### How is the device connected?

Logi Bolt receiver

### Affected area(s)

- [ ] Device discovery / detection
- [ ] Button remapping
- [ ] DPI control
- [ ] SmartShift
- [ ] Per-application profiles
- [ ] Battery status
- [ ] Settings / configuration (TOML)
- [ ] Auto-update
- [ ] Menu bar / tray
- [x] Other

### What happened?

### Steps to reproduce

1. Open "OpenLogi"
2. Click "Actions Ring"
3. Select an empty slot
4. Configure "/usr/bin/nautilus" via "Open application"
5. Click the button mapped to the "Actions Ring" built-in action, then click on the configured action, nothing happens

### Diagnostics report

```markdown

```

### `openlogi list` output

```text

```

### Logs

```shell

```

### macOS permissions (if applicable)

- [ ] OpenLogi has **Accessibility** permission (needed to remap buttons via the event tap).
- [ ] OpenLogi has **Input Monitoring** permission (needed for Bluetooth-direct devices and capture).

Start by reproducing the failure in the Actions Ring's "Open application" action on Linux and trace the handling of the configured executable such as /usr/bin/nautilus or nautilus. Check whether the action is invoked when selected; done means configured applications launch from the Actions Ring on the reported environment.

Written by the indexing model from the issue text.