**What happened**
The bar's nightlight indicator (`omarchy.nightlight`) doesn't update when hyprsunset applies its own time-based `profile` schedule (e.g. `time = 19:00` in `~/.config/hypr/hyprsunset.conf`). The icon only reflects reality right after a manual click on the widget, or immediately after a fresh shell start.

**Expected**
The indicator should reflect hyprsunset's live temperature at all times, including scheduled transitions hyprsunset applies on its own.

**Root cause** (from `/usr/share/omarchy/shell/plugins/services/nightlight/Service.qml`)
`refresh()` — which runs `hyprctl hyprsunset temperature` and updates the cached state — is only called from `Component.onCompleted` and after a manual `setNightlight()`/toggle/IPC call. There's no `Timer` or subscription that re-polls hyprsunset periodically, so a schedule-driven change made entirely inside the hyprsunset daemon is invisible to the shell until something explicitly calls `refresh()`.

**Steps to reproduce**
1. Set a scheduled profile in `hyprsunset.conf`, e.g.:
   ```
   profile {
       time = 19:00
       temperature = 4000
   }
   ```
2. Leave the shell running across 19:00 (or start it after 19:00)
3. Compare `hyprctl hyprsunset temperature` against the bar icon / `omarchy-shell nightlight status`

**Observed**
```
$ hyprctl hyprsunset temperature
4000
$ omarchy-shell nightlight status
{"enabled":false,"temperature":null}
```

**System:** Omarchy 4.0.1-1, Hyprland 0.56.2

**Suggested fix:** add a polling `Timer` inside `Service.qml` to periodically call `refresh()` so the indicator stays in sync with hyprsunset's own schedule.