v1.0.2

Desktop-layer widget, rounded glass tiles, manufacturer sensors

Widget mode rework - the monitor now lives on the desktop layer itself and is
NEVER on top of other windows:
- Windows: embedded into the shell WorkerW wallpaper layer (Rainmeter-style);
  survives Win+D / Win+M / virtual desktops; auto re-embeds after Explorer
  restarts
- Linux/X11: desktop window type (sticky, below, skip-taskbar) with wmctrl
- macOS: plain non-floating window (best effort)

Tiles: every device group is a rounded glass card with soft accent glow,
theme-aware palette and inline sparklines.

Sensors:
- LibreHardwareMonitor/OpenHardwareMonitor WMI backends for true motherboard
  CPU/GPU temperatures, loads and fan RPMs
- Fan tiles (hardware monitor or psutil on Linux)
- Disk read/write throughput tiles via psutil.disk_io_counters
- GPU temperature fallback from hardware monitor when nvidia-smi absent
- Inferred CPU temperature from sustained load as last resort, honestly
  labelled '~Temperature'