## What happened

The power panel's "Charge cycles" field displays `0` on a machine whose ACPI
firmware implements only `_BIF`, which has no cycle-count field at all. The
value is not a reading — it is the kernel's initialized default surfaced as
fact. On this hardware the panel shows `0` regardless of the battery's true age.

UPower — which the same script already shells out to — correctly reports the
value as unknown for this battery:

```
$ upower -i $(upower -e | grep BAT) | grep charge-cycles
    charge-cycles:       N/A

$ cat /sys/class/power_supply/BAT0/cycle_count
0

$ sudo strings /sys/firmware/acpi/tables/DSDT | grep -o '_BIX\|_BIF' | sort | uniq -c
      2 _BIF
```

`_BIX` (ACPI 4.0) is what introduced the Cycle Count field; `_BIF` has no
equivalent. With no `_BIX`, the kernel has no source for the value.

## Expected

"Charge cycles" shows `—` — the fallback already present in the code — when the
value is unavailable, matching what UPower reports for the same battery.

## Where it comes from

- `bin/omarchy-battery-status:110-112` reads
  `/sys/class/power_supply/BAT*/cycle_count` directly and emits the raw `0`.
- `shell/plugins/panels/power/Panel.qml:437`:

  ```qml
  InfoPair { label: "Charge cycles"; value: root.batteryInfo.cycles || "—" }
  ```

  The `|| "—"` fallback only fires when the key is absent entirely (the script
  omits the line when the file is unreadable). `parseKeyValue` in `Model.js`
  stores values as strings, and `"0"` is truthy in JS, so the fallback never
  fires for a zero value.

## Possible fix

Filtering non-positive values in `omarchy-battery-status` would cover it:

```bash
[[ -n $cycles && $cycles -gt 0 ]] && printf 'cycles\t%s\n' "$cycles"
```

One tradeoff worth a maintainer's call: a battery with genuine `_BIX` support
that truly has 0 completed cycles would then show `—` instead of `0`. UPower
makes exactly this tradeoff already (it maps `<= 0` to unknown), so following
its lead seems defensible.

## Steps to reproduce

1. On a machine whose DSDT has no `_BIX` (verify with the grep above)
2. Open the power panel from the bar
3. "Charge cycles" reads `0`

## System

- Omarchy 4.0.4-1
- Dell Latitude 5491, BIOS 1.39.0
- Intel Core i5-8400H / Intel UHD Graphics 630
- Kernel 7.2.5-3-omarchy
- Battery: SMP DELL GD1P653