## System details

- **Machine:** Lenovo ThinkPad T460s (20FAS53900)
- **CPU:** Intel Core i5-6200U (integrated graphics)
- **Omarchy:** 4.0.4-1
- **Kernel:** 7.2.5-3-omarchy
- **Quickshell:** 0.3.1-1

## What happens

On ThinkPads, turning Bluetooth off from the bar works, but it can't be turned back on from the bar. The Bluetooth icon also disappears from the bar.

## Why

`omarchy-bluetooth-power off` runs `rfkill block bluetooth`, which blocks every Bluetooth rfkill switch, including `thinkpad_acpi`'s `tpacpi_bluetooth_sw`. On ThinkPads that switch cuts power to the Bluetooth chip, so `hci0` is removed entirely instead of just being set to `Powered: no`:

```
$ rfkill list        # after turning Bluetooth off from the bar
0: tpacpi_bluetooth_sw: Bluetooth
	Soft blocked: yes
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
$ bluetoothctl list  # (empty)
```

Then, in `shell/plugins/panels/bluetooth/Panel.qml`:

- `toggleBluetooth()` starts with `if (!adapter) return`, so the right-click toggle, the panel switch and the `b` key do nothing once the adapter is gone.
- The power switch has `visible: !!root.adapter`, so it is hidden.
- `icon` returns `""` when there is no adapter, so the bar icon disappears.

The panel offers no way to turn Bluetooth back on. Running `omarchy-bluetooth-power on` or `rfkill unblock bluetooth` from a terminal brings the adapter back right away.

## Steps to reproduce

1. On a ThinkPad with `thinkpad_acpi` loaded, check that `rfkill list` shows `tpacpi_bluetooth_sw`.
2. Turn Bluetooth off from the bar (right-click the icon, or use the switch in the panel).
3. The bar icon disappears, `bluetoothctl list` is empty, and nothing in the bar turns Bluetooth back on.

## Expected

Bluetooth can be turned back on from the bar, and the bar shows an "off" icon instead of nothing.

## Workaround / suggested fix

A no-adapter state that coexists with an rfkill soft block should be treated as "off". I'm running a clone with these changes, and off/on works repeatedly from the bar:

```diff
-    if (!adapter) return ""
+    if (!adapter) return "󰂲"
...
-    if (!adapter) return "No adapter"
+    if (!adapter) return "Turned Off"
...
-    if (!adapter) return
-    Quickshell.execDetached(["omarchy-bluetooth-power", adapter.enabled ? "off" : "on"])
+    Quickshell.execDetached(["omarchy-bluetooth-power", adapter && adapter.enabled ? "off" : "on"])
...
-            visible: !!root.adapter
```

A more careful version would show "off" only when a Bluetooth rfkill switch is actually soft-blocked, and keep "No adapter" for machines that really have none.