Adds the explicit Windows WGC/D3D11 hardware-only Media Foundation H.264 source, process-tree audio, direct Go/Pion fanout, source-aware UI/gate, and unique evaluation package helper. Browser VP8 remains the default. Local acceptance and bounded real-device evidence are recorded in the PR; GitHub jobs were billing-blocked before executing any step.
Add the Android 14+ MediaProjection direct-child sender, focused protocol tests, compile gate, and durable mobile/TV capability boundaries. Local official-SDK acceptance passed after GitHub runners were blocked before step execution by account billing.
AAA