Mirror lamps onto RGB keyboards via Windows Dynamic Lighting

Opt-in checkbox in the Input group: keys bound to lamp-capable button
addresses glow with the panel's palette (red family, yellow for the
Secondary/Screen columns) and blink at the panel's own flash rates, so
keyboard and on-screen panel stay in step; unbound keys are blacked out
so the keyboard reads as the button field. Zone-lit keyboards without
per-key addressing (e.g. this laptop's 24-zone ITE board) fall back to
mirroring the strongest current lamp board-wide. A picker under the
checkbox narrows the mirror to one keyboard when several are attached
(hot-plug aware; releases the others back to Windows).

KeyboardLampMirror claims keyboard-kind LampArrays via a DeviceWatcher,
repaints at 100 ms only when colors actually change, survives paint
faults (a leaked Timer exception would kill the process), and logs
attach/detach plus IsAvailable transitions with a pointer to the
Dynamic Lighting background-control setting. Disabling releases every
claim so the LEDs revert to the ambient scene.

Also: the wire log gets a horizontal scrollbar (long lines don't wrap).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/VRio.App/VRio.App.csproj

@@ -20,6 +20,9 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <!-- WinRT projections for Windows.Devices.Lights (Dynamic Lighting /
+         LampArray) on .NET Framework — the keyboard lamp mirror. -->
+    <PackageReference Include="Microsoft.Windows.SDK.Contracts" Version="10.0.22621.3233" />
   </ItemGroup>
 
 </Project>