Secpar 3.10.0 — Desktop audio and free mouse

• Desktop mouse moves freely in a window and captures automatically in fullscreen. Alt+F toggles fullscreen.
• Linux uses the system ALSA/Pulse/PipeWire libraries, fixing the packaged audio-plugin lookup failure reproduced on Arch. Additional native PCM formats are supported.
• Audio output failures expose Retry audio without requiring a stream reconnect.
• Android ignores stale stream-exit callbacks that could remove Home and leave an empty grey window after switching apps.

The Android/Linux fixes work with an existing 3.9.0 Windows host; a host update is not required for them. Video decoding, Windows capture/encoding and Android streaming/audio engines are unchanged.

Validation:252 Android unit tests;10 navigation/background/recreation/PiP/input/video checks; desktop input, popup hit-testing and codec tests; native Wayland launch; actual Opus-to-ALSA/Pulse virtual-output capture, with the previous package failing the expected plugin check and the candidate producing audio without dropped PCM frames. Physical-device acceptance remains the final check.

All downloads are optimized release packages. SHA256SUMS.txt covers the APK, unified Windows installer and Linux AppImage. Debug/review/test builds remain local.