The 660-line tray service mixed three concerns. Split into:
- TrayIconInterop: all P/Invoke declarations, interop structs, and the
subclass delegate (consumers use 'using static'), so the Win32 surface is
isolated and reviewable.
- SensorIconRenderer: the GDI drawing of the 16x16 per-sensor value icon.
- TrayIconService: slimmed to tray orchestration (icon lifecycle, context
menus, callback routing) at ~340 lines.
Also dedupes the per-sensor settings-key helper onto
SensorSelectionService.GetSensorSettingName. Pure relocation; behavior is
unchanged. Verified by clean build, 199 tests, and an app smoke-run.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
JMR-dev
