Secpar 3.7.0

• Fix shared Windows capture blocking GPU conversion and encoding. Keeps support for three connected devices.
• Smooth the desktop logo and wordmark at each display scale, including Linux.

Local stream latency and concurrent hardware checks passed; Windows host tests: 135 passed. Linux package passed native Wayland launch/render checks. Optimized Windows and Linux packages only.

Audio recovery and Linux hardware decoding remain open. Android stays on 3.6.0 for this release; update the Windows host to receive the capture fix. Linux hosting still needs testing on a real KDE Wayland laptop; macOS hosting is unfinished.