feat: reassert window topmost when foreground changes#5
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Explorer.exe re-asserts the taskbar's own HWND_TOPMOST z-order whenever it becomes foreground, which can push the widget behind it even though WPF's Topmost flag is still true. Hook EVENT_SYSTEM_FOREGROUND via a low-level Win32 hook and re-apply HWND_TOPMOST reactively instead of polling.
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Explorer.exe re-asserts the taskbar's own HWND_TOPMOST z-order whenever it becomes foreground, which can push the widget behind it even though WPF's Topmost flag is still true. Hook EVENT_SYSTEM_FOREGROUND via a low-level Win32 hook and re-apply HWND_TOPMOST reactively instead of polling.